Daikin RZQG71L9V1B [100/215] 3 connect a refrigerant recovery unit to perform refrigerant recovery 4 upon completion of refrigerant recovery turn off refrigerant recovery mode by taking the following steps or turning off the power of outdoor unit

External control icon this icon indicates that another controller with higher priority is controlling or disabling your installation 9 change over under centralised control icon this icon indicates that the change over of the installation is under centralised control assigned to another indoor unit or optional cool heat selector connected to the outdoor unit main remote controller 24

Names and functions 24

On off button press the on off button to start or stop the system 2 operation lamp the operation lamp lights up during operation or blinks if an error occurs 3 operation mode icon these icons indicate the current operation mode fan dry automatic cooling heating 4 ventilation mode icon these icons indicate the current ventilation mode hrv only automatic heat exchange bypass 5 ventilation icon the ventilation icon appears when the ventilation is adjusted with the ventilation amount button hrv only simultaneously the ventilation amount is indicated by the fan speed icon 6 air cleaning icon this icon indicates that the air cleaning unit option is operational 7 leave home icon the leave home icon shows the status of the leave home function 24

Wired remote controller 24

Brc1e52 53 26

Brc1d528 28

Brc1e52 53 28

Main sub setting when using 2 remote controllers 28

Setting 28

Situation 28

Brc1d528 29

Centralized control group no setting 29

Brc1e52 53 30

In order to conduct the centralized remote control using the centralized remote controller and the unified on off controller group no settings should be made by group using the operating remote controller make group no settings for centralized remote control using the operating remote controller 30

Notice enter the group no and installation place of the indoor unit into the attached installation table be sure to keep the installation table with the operation manual for maintenance 30

Applicable models 31

Names and functions 31

Receiver 31

Wireless remote controller 31

Introduction 33

Main sub setting 33

Setting the address for the receiver 33

To set the wireless remote controller you have to set the address for the receiver of the wireless remote controller the wireless remote controller 33

When using both a wired and a wireless remote controller for 1 indoor unit the wired controller should be set to main therefore set the main sub switch ss1 of the receiver to sub 33

Brc1d528 34

Display service data 34

Service mode 34

Service setting 35

Brc1e52 53 36

Display service data 36

Brc1d528 39

Esie15 13c inspection mode 39

Inspection mode 39

Note inspection mode is not available for brc1e51a7 39

Remote controller 25 39

Brc1e52 53 40

Function details 2 41

Function of main components and thermistors 8 2 operation flow chart 0 41

Part 3 function and control 41

Function and control 42

Function of main components and thermistors 42

Function of main components and thermistors esie15 13c 42

Notes 1 the pipes between the branch and the indoor units should have the same size as the indoor connections 2 the check valve is only present in following models rzqg71l rzqsg100l and rzqsg125l 42

Rzqg l9v1 pair application 42

Cooling dry operation 44

Function and control 44

Operation flow chart 44

Operation flow chart esie15 13c 44

Esie15 13c operation flow chart 45

Function and control 31 45

Heating operation 45

Function details 46

Indoor unit 46

Set temperature and control temperature 46

Thermostat control 46

1ºc thermostat off dry operation 47

Cooling dry operation normally drain pump on thermostat on off 47

Drain pump control only for fcqg fcqhg 47

In dry operation 47

Note 1 the thermistor to detect room temperature is as follows according to field setting factory setting indoor unit suction air thermistor when set to remote controller thermistor indoor air thermistor in the remote controller 47

Swing flaps operate as shown in the table below 47

Swing pattern selection 47

Switchable fan speed 47

The setting airflow rate when the thermo is turned on and off by operation mode is as shown below the airflow rate when the thermo is turned off can be changed in field setting the table below shows the factory setting 47

Tr 13ºc 47

ºc thermostat off dry operation 47

ºc tro 47

Δ t 2 ºc 47

Δ t 2ºc 47

Control when the operation mode is set to auto 48

Dew condensation prevention control 48

Dew condensation prevention control setting of louvers cancelled activated 48

Fcqg fcqhg when indoor unit humidity is high during the operation the moving range of louvers is limited 48

Fhqg in cooling and dry operation the following control is carried out in order to prevent dew condensation when the horizontal blade blows air downward 48

Function and control 48

Function details esie15 13c 48

Heating when the following condition consists by mounting the adaptor for wiring pcb the drain pump is turned on 48

Horizontal blade is set to downward flow p3 or p4 cooling operation compressor operation continues for 30 minutes 48

P0 p0 p1 48

P1 p1 p1 48

P2 p2 p2 48

P3 p3 p3 48

P4 p4 p4 48

Setting the operation mode to auto with the remote controller the unit is controlled regarding the contents shown below 48

Starting condition 48

Swing p0 p4 p1 p4 48

The operation of louvers while this control is activated is as shown below 48

Defrost control 49

Draft avoidance control 49

Freeze up prevention control 49

Monitoring control 49

Abnormal stop 50

Outdoor unit 50

Restart standby 50

To prevent compressor from frequent on off and equalize pressure in refrigerant line conducts forced thermostat off for 3 minutes after compressor stopping moreover outdoor unit fan conducts residual operation for a period of time to expedite equalization and prevent refrigerant from entering in evaporator 50

When the following items show abnormal values the thermostat turns off and error is determined based on the number of retry in order to protect the compressor and other devices 50

1 hour or more after turning off the compressor outdoor air temperature is not declining discharge pipe temperature 40 c 51

6 hours or less after turning on the power 51

6 hours or more after turning on the power 51

After the compressor has been turned off the preheating operation control will be activated in order to avoid refrigerant from dissolving in the compressor oil and quick increase of heating level during the heating operation 51

C ending condition outdoor air temperature 20 c 51

Compressor stopping 51

Ending conditions 51

Esie15 13c function details 51

Function and control 37 51

Operation of thermostat is established 51

Outdoor unit fan control during heating thermostat off 51

Preheating operation control 51

Starting conditions 51

Starting control 51

When compressor start up the starting frequency is fixed for specified period of time at low frequency to prevent returning of refrigerant 51

Based on the difference between the set temperature by remote controller and indoor unit suction air temperature the thermo is turned on and off t indoor suction air temperature temperature set by remote controller cooling t temperature set by remote controller indoor suction air temperature heating 52

Room thermostat control 52

Thermostat off condition 52

Compressor step 53

Cooling 53

Depending on t cool and the cooling load the target evaporating temperature will be a value between 2 c and 20 c 53

Depending on t heat and the heating load the target condensing temperature will be a value between 42 c and 54 c for rzqg100 140l 42 c and 50 c 53

Heating 53

Maximum frequency in cooling 53

T cool remote controller set temperature indoor return air temperature 53

T heat indoor return air temperature remote controller set temperature 53

The compressor operation frequency is controlled in order to keep a constant evaporation temperature in cooling and a constant condensing temperature in heating 53

Actual heat exchanger outlet subcooling degree the electronic expansion valve will close target heat exchanger outlet subcooling degree actual heat exchanger outlet subcooling degree the electronic expansion valve will open the value of target heat exchanger outlet subcooling degree varies depending on change of discharge pipe superheat degree of inverter compressor etc 54

General electronic expansion valve control 54

Hot start control only in heating operation 54

In heating when performing a startup or after the defrosting cycle has been completed the indoor fan will be controlled in order to prevent cold air draft and secure the starting performance quick pressure build up 54

A setting by remote controller night time quiet operation can be set by field setting from the wired remote controller by estimating current time based on the change of outdoor air temperature the low noise operation is automatically performed at night from 22 00 to 8 00 by limiting the number of revolutions of outdoor unit fan and the operation frequency of the compressor the time at night is target b setting by demand operation option short circuit between com lnop on terminal of demand adaptor low sound running to be done with limited outdoor fan speed compressor running frequency 55

Esie15 13c function details 55

Function and control 41 55

In order to prevent abnormal low pressures in the system the below control function will be activated 55

Low pressure protection control 55

Night time quiet operation 55

Note in the case of capacity priority setting setting the capacity priority setting from the field setting mode of indoor remote controller the capacity is prioritized in the operations of both a and b and when the air conditioning load becomes high the low noise operation stops and the normal operation starts if you cancel the capacity priority setting when the low noise setting remains the low noise setting is prioritized and even if air conditioning load becomes high the noise operation continues 55

Heating control at high outdoor air temperature 56

High pressure protection control 56

Esie15 13c function details 57

Function and control 43 57

In case the suction superheat value in heating mode is too high the oil return to the compressor will be insufficient in order to avoid that the compressor oil will be accumulated in the outdoor unit heat exchanger the upper limit frequency will be controlled sh superheat degree ev electronic expansion valve 57

Suction pipe superheat protection control only in heating operation 57

After the operation stopped the stop caused by the remote controller an error and the compressor and outdoor unit fan motor when retry thermo is off open phase waveform is output for about one minute for electric discharge of the capacitor afterwards electric discharge will continue due to discharge resistance until the capacitor voltage becomes 0 v at this time operation sound may be heard from the outdoor unit 58

Capacitor electric discharge control 58

Discharge pipe temperature protection control 58

Electronic expansion valve opening degree and the compressor operating frequency will be controlled in order to avoid abnormal high compressor temperatures td discharge pipe temperature compressor operating frequency control 58

Electronic expansion valve opening degree control td compressor discharge pipe temperature c 58

Electronic expansion valve opening degree lower limit 10 pulses cooling for 2 minutes heating for 1 minute 58

Electronic expansion valve opening degree lower limit 5 pulses cooling for 2 minutes heating for 1 minute 58

Function and control 58

Function details esie15 13c 58

Normal control 58

Rzqg71l rzqg100 140l a c 105 c 105 c b c 125 c 120 c c minutes 15 minutes 15 minutes 58

Td 100 c 58

Td 95 c td 90 c td 80 c 58

Inverter current protection control 59

Restricts compressor operation frequency to prevent compressor from tripping due to inverter overcurrent 59

Thermostat off due to outdoor air temperature only in heating operation 59

Controls compressor and outdoor unit fan under low outdoor air temperature condition to secure pressure difference between high and low pressure 60

Frequency restriction 60

Function and control 60

Function details esie15 13c 60

Hp high pressure lp low pressure ta outdoor air temperature tfin inverter fin temperature 60

Low outdoor air temperature control in cooling operation 60

Freeze up prevention control 61

Oil recovery operation 61

Piping and wiring incompatibility detection control 61

Protection control by overall current 61

Shortage of refrigerant detection control 61

5 c 40 minutes 2 hours 6 hours outdoor air temperature 5 c 40 minutes 6 hours 8 hours 62

Defrost conditions 62

Defrost operation 62

Defrost upper limit a depending on the defrost start setting field setting mode of the indoor unit remote controller frost upper limit time a becomes as shown in the table below 62

Defrost will start when the following conditions have been realized 62

Function and control 62

Function details esie15 13c 62

Integrated compressor running time is 25 minutes or more since the completion of the previous defrost operation or defrost upper limit time a is met outdoor unit heat exchanger temperature is within the defrost request area 62

Starting conditions 62

When in heating mode a defrost operation will be conducted in order to avoid ice formation on the outdoor unit heat exchanger 62

When quick defrost starting is set factory setting when slow defrost starting is set 62

Defrost control 63

Defrost ending conditions 63

Defrosting ends when the following conditions have been realized note that defrosting can be operated for 10 minutes at longest hp high pressure tb heat exchanger distributor pipe temperature tm intermediate heat exchanger temperature 63

During heating when frost has adhered to the outdoor unit heat exchanger and the ventilation flue is blocked the fan sound increases to prevent this fan noise from increasing the number of revolutions of fan is lowered 63

Emergency operation 63

No transmission is performed between indoor and outdoor unit during cooling the cycle of operation for 20 minutes and stop for 10 minutes is repeated during heating defrost is performed once every one hour under other conditions the same control as the normal control is performed 63

Outdoor unit fan control when frost is adhered 63

Simulated operation function 64

Even when the heating operation is performed by pressing the test run button of the indoor unit remote controller test run mode cannot be entered the heating operation is performed with forced thermo on 65

Make sure that the initial operation after installation is performed by the cooling operation 65

Note in the test run mode errors will be determined all at once in order to detect problems of field setting conditions such as a case that the opening of stop valve has been forgotten during the test run if the error code shown below is displayed take measures according to the instructions 1 when the error code e3 e4 or l8 is displayed on the remote controller there is possibility that either the stop valve is closed or the airflow outlet is obstructed 2 when the error code u2 is displayed on the remote controller check for voltage imbalance 3 when the error code u4 or uf is displayed on the remote controller check the inter unit branch wiring connection 4 when the error code l4 is displayed on the remote controller there is possibility that the airflow passage is closed when there is no error code display cooling operation continues however this control is once again performed after refrigerant is recovered by pump down and at the time of the first operation after the outdoor unit pc 65

Test operation control 65

Until the test run is complete the heating operation cannot be performed 65

When operating in cooling mode for the first time after installation or operating in cooling mode by pressing the indoor unit inspection button the unit will perform a test operation for about 3 minutes 65

Change field setting 33 in mode 2 with following values for tes lower limit value 66

Change field setting 34 to change the tcs upper limit value now this value is controlled by pe and no field settings 66

Current setting te lower limit 66

Currently it is possible to modify the lower limit of the te value with field setting especially used for edp application 66

Factory setting 66

However these values are not high enough for high sensible mode 66

Improved comfort in cooling by te control 66

Improved cop in heating by tc control 66

Most likely these values however protection control of unit has highest priority the highest value between setting 11 and 33 will overrule do not change the value of setting 33 when edp setting is set for whc see weather depending control 66

New higher setting te lower limit 66

Similar as high sensible mode in vrv 66

The cop could be increased with reduction of capacity by lowering the tcs upper limit values 66

The normal protection control has a higher priority than the new tcs upper limits for whh see weather depending control 66

Upper limit tc control 66

Weather depending control 66

When the tes and tcs values are changed depending on the ambient outdoor temperature the cop and eer can be increased in cooling mode if ambient temperatures are low the requirement for quick cooling is small this way the eer can be improved by increasing the tes lower limit values in heating mode if ambient temperatures are high the requirement for quick heating is small this way the cop can be improved by decreasing the tcs upper limit values 66

Cooling 67

Field setting to control the different value 67

Heating 67

Note if quick cooling heating function is selected by the customer via remote controller the unit will go into quick cooling heating for 20 minutes neglecting the selected te tc after 20 minutes the selected te tc setting will receive priority again example the customer has to make a choice fix the te lower limit and or the tc upper limit on a certain value or choose the weather dependent te lower limit or tc upper limit in this case the customer can select 2 different outdoor temperatures that will trigger the changeover to a different te lower limit and or tc upper limit 67

Free cooling 68

Slow start for edp applications 68

1 0 1 2 69

Bottom plate heater 69

Control logic of the compressor with setting 26 2 03 04 69

Dt rs 2 69

For rzqg71 the bottom plate heater and free cooling cannot be combined as there is no x28a terminal present on the outdoor unit pcb 69

Krp58m51 69

Main pcb ou 69

Off compressor 69

Outdoor unit setting 2 53 xx 69

Signal 0v or 230v 69

The customer will have the choice to select 2 parameters to control the activation of the free cooling 69

Use mode 2 53 std 01 function off with x and y to be chosen x increase free cooling start point above thermo on y temperature difference between indoor and outdoor ambient temperature to start the free cooling it is important to make setting 26 7 02 in case of the use of free cooling this to guarantee that the free cooling will start up before the outdoor unit when the cooling capacity of the free cooling should not be enough then the outdoor unit will kick in when thermo on 69

Emergency operation 2 71

Field setting from outdoor unit pcb 1 71

Field setting from remote controller 1 71

Part 4 field setting 71

Test operation 8 71

Be sure to perform a test run be sure to fully open the liquid side and gas side stop valves if you operate the unit with stop valves closed the compressor will break down be sure to execute the first test run of the installation in cooling mode operation never leave the unit unattended with an open front panel during test run 72

Note note that during the first running period of the unit required power input may be higher this phenomenon originates from the compressor that requires a 50 hour run in period before reaching smooth operation and stable power consumption 72

Pre run checks 72

Remote controller confirmation 72

Test operation 72

The settings of the remote controller for the brc1d series should be made in accordance with the following procedure the settings of the remote controller for the brc1e series should be made in accordance with the attached manual 72

Warning live parts can be easily touched by accident never leave the unit unattended during installation or servicing when the service panel is removed never perform a test run with the discharge piping thermistor r2t and suction piping thermistor r3t removed as this might break the compressor do not touch the drain pump or fan if the indoor unit is operated without attaching the decoration panel doing so could result in an electric shock or other injury 72

Precautions regarding test run 73

Test run 73

Failure diagnosis at the moment of first installation 74

Brc1d528 75

Field setting from remote controller 75

Field setting mode 75

First code no 75

Unit no mode no second code no 75

Wired remote controller 75

Brc1e52 76

Caution 77

Remote controller settings 78

Setting 80

To change the field settings proceed as follows 80

To set the field settings you have to change mode no first code no second code no 80

Wireless remote controller 80

Settings contents and code no for indoor units 81

You can change the setting of 3 x 3 sensing cassette as mentioned below the method of field setting which can be conducted through remote controller is established practice but it is possible only with brce52 remote controller 81

Detailed explanation of setting modes 82

Filter cleaning sign interval 82

Note 1 settings are made simultaneously for the entire group however if you select the mode no inside parentheses you can also set by each individual unit setting changes however cannot be checked except in the individual mode for those in parentheses even if the setting are made for the entire group the display always indicates 01 2 for fhqg the second code no of the airflow range setting is set at 03 3 88 may be displayed to indicate the remote controller is resetting when returning to the normal mode 4 this function does not work when set back function is set by remote controller 5 this is the case when the remote sensor optional kit is used 6 this is the case when the sensor option optional kit is used 7 wind block one of 4 flaps can be set a block position block position closed position wind can not be blocked 100 but mostly blocked without additional parts 82

Remote controller thermistor 82

Select the thermistor to control room temperature 82

The factory setting for the second code no is 02 and room temperature is controlled by the indoor unit suction air thermistor when the second code no is set to 01 room temperature is controlled by the indoor unit suction air thermistor and the room temperature thermistor in remote controller as following figures 82

When display is selected in filter cleaning sign after the unit runs for certain time filter cleaning will be displayed on the remote controller this setting is used when the display interval of filter cleaning needs to be changed on occasions such as when the filter has been heavily contaminated 82

20 3 01 display 02 no display 83

Cooling 83

Esie15 13c field setting from remote controller 83

Field setting 69 83

Filter cleaning sign 83

Heating 83

Mode no first code no second code no filter cleaning display 83

When using remote controller 83

Whether or not to display filter cleaning after operation of certain duration can be selected 83

02 03 11 21 3 standard slightly up up 84

A 6 minutes off 1 minute ll b 6 minutes off 1 minute setting airflow c 6 minutes off 1 minute l 84

Airflow rate 84

Airflow rate setting during heating fcqg only 84

Field setting 84

Field setting from remote controller esie15 13c 84

For the purpose of securing airflow range during heating the number of revolutions of fan during heating can be changed make the setting according to installation environment 84

Set the airflow by the combination of 3 modes as below 84

Set the airflow when thermostat off by the combination of fan off at thermostat off 11 21 2 fan speed heating thermostat off 12 22 3 and fan speed cooling thermostat off 12 22 6 84

Automatic operation mode control 85

Automatic restart after power failure reset 85

Calculates and controls the optimum indoor temperature 85

Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again consequently the user might be surprised with question for the reason why 85

In the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates 85

Outdoor air temperature indoor air temperature temperature set by remote controller 85

Setting of normal airflow 85

Airflow direction setting 86

Airflow range setting 86

Individual setting of ventilation 86

Make the following air flow direction setting according to the respective purpose 86

Set the air flow direction of indoor units as below set when optional air outlet blocking pad has been installed 86

Some indoor unit models are not equipped with draft prevention upward function 86

This is set to perform individual operation of heat reclaim ventilation using the remote controller central unit when heat reclaim ventilation is built in switch only when heat reclaim ventilation is built in 86

Factory set 87

Factory settings 87

Overview of the field setting on the outdoor units 87

Remote controller settings 87

The table below contains the factory settings of all outdoor units 87

The table below contains the remote controller settings 87

Capacity priority setting 88

Lower the operation sound of the outdoor unit 88

Method 88

Purpose 88

Quiet low noise operation 88

Quiet low noise operation by automatic control 88

Setting 88

Silent operation can be activated by 1 automatic control by field setting from remote controller 2 external activation from optional pcb krp58m 88

Silent operation can be set by field setting from the wired remote controller 88

When setting mode 16 26 0 02 quiet low noise operation will be carried out by presuming the current time in accordance with the outside temperature automatic mode will start when the outdoor temperature is average max of last 10 days 5 c and will be conducted for 10 hours the maximum outdoor temperature is supposed to occur at 14 00h as the time judgement is made in accordance with the outdoor temperature the above mentioned timing is an estimation only 88

When setting mode 16 26 0 04 the low noise operation will be stopped when the heating or cooling load increases in that case the operation will return to normal operation the unit will return to low noise operation when the heating or cooling load decreases again 88

Capacity priority setting 89

Exceptions 89

External activation from optional pcb 89

Output on x801m 12vdc 12ma maximum wire length 100 meter 89

Power supply connector on outdoor pcb x77a 89

Quiet low noise operation can also be activated from the optional pcb 89

Quiet low noise operation will start when the contact on lnop com is closed and will remain active as long as the contact is closed no field setting on the outdoor unit or by remote controller is required quiet low noise operation will be ended when the contact is re opened use of the krp58m enables the use of an external time clock 89

Same as with the automatic control priority for capacity can be set priority for capacity will be activated by changing field setting 26 0 03 in combination with the closed contact on krp58m 89

Sound reduction 89

The quiet low noise operation will be overruled in the following conditions pump down residual operation startup control defrost operation oil recovery 89

Transmission connector on outdoor pcb x6a 89

Demand 1 90

Demand 2 90

Demand 3 90

Different demand setting can be selected by using terminal x801m demand 1 close contact between com and contact 1 demand 2 close contact between com and contact 2 demand 3 close contact between com and contact 3 90

Forced thermostat off 90

I demand function 90

Output on x801m 12vdc 12ma maximum wire length 100 meter 90

Power consumption limitation in function of setting on ds1 90

Power consumption limitation set to 40 90

Power supply connector on outdoor pcb x77a 90

Purpose 90

Set a limitation towards the power consumption from the system e g budget control limit power consumption during peak moments 90

Setting 90

Transmission connector on outdoor pcb x6a 90

Can be set when using the rzqg units for year round cooling in low humidity applications such as computer rooms edp rooms technical rooms etc to increase the capacity of the unit 91

Caution 91

Definition of low humidity area 91

Function details 91

Indoor side temperature db c 91

Parameters 91

Purpose 91

Relative humidity 91

Setting for low humidity application 91

Setting is only allowed in this area 91

When using the lh settings outside the low humidity area there is an increased risk of ice accumulation on the indoor coil or water blowing out from the indoor unit 91

Graph 1 92

Target evaporating temperature control in case of factory setting 16 26 2 01 92

Graph 2 93

Target evaporating temperature control when low humidity application is selected field setting 16 26 2 03 93

Change thermostat control 94

Defrost start setting 94

Graph 3 94

In order to increase continuous operation of the unit in low latent heat applications and avoid the rise of temperature after thermostat off the thermostat control will be changed when using field settings 16 26 2 03 16 26 2 04 94

Refer to defrost operation on page 48 94

Refer to slow start for edp applications on page 54 94

Slow start 94

Target evaporating temperature control when low humidity application freeze up operation prevention is selected field setting 16 26 2 04 94

Thermostat off 94

Thermostat on 94

Trs 0 c no change from standard setting 94

Trs 2 c for 5 minutes continuously trs 4 c 94

1 factory settings off and heat 95

Bs button 95

Dip switch 95

Display lamp 95

Field setting from outdoor unit pcb 95

Location of dip switch and bs button 95

Note bs button pump down forced defrosting pressing the bs button forcibly operates the air conditioner in the cooling mode 1 to conduct a pump down operation sending refrigerant to outdoor unit press the bs button to forcibly operate the equipment in the cooling mode then operate the unit for about 1 minute to stabilize the system after stabilizing system close the liquid pipe stop valve on the outdoor unit and after the pressure decreases and the low pressure sensor activates close the gas pipe stop valve 2 forced defrost to activate the defrost operation during the heating operation press the bs button this will activate the forced defrost operation cooling operation when the defrost cancel conditions are met the equipment automatically switches off the defrost operation 95

Various settings are available by using the dip switches and the bs buttons on the pcb 95

Field setting 96

Field setting for outdoor unit 96

Field setting from outdoor unit pcb esie15 13c 96

In this mode the following conditions can be checked current operating condition normal test operation line inspection and normal error night time quiet operation condition normal low noise level 1 2 and demand operating condition normal 30 demand 40 demand 50 demand these conditions above can be checked by performing the following steps 96

Setting by bs buttons 96

Setting mode 1 96

With setting mode 1 setting mode 2 and monitor mode various settings and data can be checked 1 setting mode 1 the initial status normal operation is setting mode 1 this mode indicates operating status test test operation hwl error l n o p night time quiet operation or demand demand operation 2 setting mode 2 each operating status can be modified 3 monitor mode this mode indicates oil return operation outdoor unit class contents of retry contents of error causes of stepping down operation etc 96

In this mode settings for the following items can be made 97

Setting mode 2 97

The figures in the columns under no represent the number of times to push the set bs2 button 98

Setting of demand 2 operation with this setting compressor operation can be controlled to reduce power consumption 60 80 demand is available when a demand adapter optional accessory is used 99

Work procedure 99

3 connect a refrigerant recovery unit to perform refrigerant recovery 4 upon completion of refrigerant recovery turn off refrigerant recovery mode by taking the following steps or turning off the power of outdoor unit 100

Note 1 if you become unsure how many times you have pushed the button push the mode bs1 button once to return to setting mode 1 and start the operating procedure all over again 100

Setting of refrigerant recovery mode when a refrigerant recovery unit is connected onsite to recover refrigerant fully open the expansion valve of the outdoor unit to help the recovery 1 stop operation 2 turn on refrigerant recovery mode by performing the following steps 100

Monitor mode 101

Field setting 102

Field setting from outdoor unit pcb esie15 13c 102

List of contents of retry and error 102

Press the return bs3 button to return the system to the initial state of monitor mode 102

Press the set bs2 button to set the led display to retry or error item 102

Pressing the mode bs1 button will bring the system to the setting mode 1 102

Take the following steps to check contents of retry and error 102

To enter monitor mode press the mode bs1 button when in setting mode 1 102

When set bs2 button is pressed the led display for return 2 turns on 102

When set bs2 button is pressed the led display for return 3 turns on 102

When the return bs3 button is pressed the led display for return 1 turns on 102

Indoor unit 103

List of detailed error codes skyair 103

Outdoor unit 104

Troubleshooting 105

As emergency operational methods there are three methods as shown below choose the best method that is suitable for each purpose of use 106

Changeover the switches of outdoor unit pcb ds1 as shown below 106

Emergency operation 106

Emergency operation forced operation 106

Forced operation 106

Precautions 1 make sure that the power is turned off before changing the switch 2 when returning to the normal operation make sure that the power is turned off before returning each switch to the original position 3 when the protection device is activated during the emergency operation the unit stops the operation once and restarts three minutes later 4 when there is an error on pcb the emergency operation cannot be used 106

Turn off the power supply 2 changeover the switch of indoor unit pcb ss1 from norm normal to emg emergency 106

When the power is turned on the operation will be forcibly activated 106

Operation by the test operation mode 107

Maintenance inspection 7 109

Part 5 service diagnosis 109

Symptom based troubleshooting 9 109

Troubleshooting by led indications 17 109

Troubleshooting by remote controller 18 109

During or after maintenance when the power supply is turned back on operation restarts automatically by the auto restart function please exercise the proper caution 111

Guide lines for optimal operation condition 111

Indoor unit fan h tap 111

Maintenance inspection 111

Overview 111

Standard conditions 111

The operation value guide lines when operating under standard conditions by pushing the test operation button on the remote controller are as given in the table below 111

When performing maintenance you should at least perform the following inspections 111

1 water in the refrigerant freezes inside the capillary tube or electronic expansion valve and is basically the same phenomenon as pump down 2 dirt in the refrigerant clogs filters inside the piping and is basically the same phenomenon as pump down 3 pressure differential between high and low pressure becomes low 112

Cooling 112

Correlation of air conditioner s operation status and pressure running current 112

Heating 112

What happens in comparison to normal values is summarized in the table below measured for 15 20 minutes or more after operation starts 112

Overview 113

Symptom based troubleshooting 113

Applicable model 114

Equipment does not operate 114

Supposed causes 114

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 115

Check the electric system 115

Diagnose based on error code on remote controller 115

Esie15 13c symptom based troubleshooting 115

Normal equipment starts operation 3 minutes later 3 min standby 115

Service diagnosis 101 115

Troubleshooting 115

Turn on the power switch or replace the fuse if high harmonics circuit breaker is not used on the inverter compressor replace the circuit breaker 115

Wait until power returns 115

Applicable model 116

Indoor unit fan operates but compressor does not operate 116

Supposed causes 116

Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 117

Check the thermistor 117

Esie15 13c symptom based troubleshooting 117

Normal thermostat off by outdoor temperature 117

Replace the compressor 117

Replace the magnetic switch or power transistor 117

Replace the pcb 117

Service diagnosis 103 117

Troubleshooting 117

Turn on the power switch or replace the fuse 117

After vacuum drying charge correct amount of refrigerant check the pressure switch 118

All models of skyair series 118

Applicable model 118

Cleaning 118

Cleaning of the heat exchanger 118

Cooling heating operation starts but stops immediately 118

Defective fan motor check the magnetic switch and auxiliary switch for fan motor 118

Diagnose based on the error code on remote controller 118

Overcharge of refrigerant air mixed in refrigerant system defective pressure switch defective magnetic switch for outdoor unit fan motor defective aux relay for outdoor unit fan motor soiled heat exchanger of outdoor unit there is an interfering item in airflow of outdoor unit defective outdoor unit fan soiled air filter of indoor unit soiled heat exchanger of indoor unit there is some interfering item in airflow of indoor unit defective indoor unit fan 118

Remove the interfering item 118

Supposed causes 118

Troubleshooting 118

After unit shuts down it cannot be restarted for a while 119

Applicable model 119

Supposed causes 119

Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 120

Check the compressor 120

Contact the power company 120

Defective electronic expansion valve 120

Defective four way valve 120

Normal unit is in 3 min standby mode 120

Replace the power cable 120

Service diagnosis 120

Symptom based troubleshooting esie15 13c 120

Troubleshooting 120

Applicable model 121

Equipment operates but does not provide cooling 121

Supposed causes 121

Additional unit installation should be considered 122

After vacuum drying charge correct amount of refrigerant 122

Check the each item 122

Check the each section 122

Normal 122

Troubleshooting 122

Applicable model 123

Equipment operates but does not provide heating 123

Supposed causes 123

Additional unit installation should be considered 124

After vacuum drying charge correct amount of refrigerant 124

Check the each item 124

No abnormality 124

Refer to test operation on p 8 124

This is normal heating operation will be conducted after 2 or 3 minutes 124

Troubleshooting 124

Wait for a while no abnormality 124

All models of skyair series 125

Applicable model 125

Cleaning of air filter check the fan motor refer to troubleshooting a6 125

Cleaning of heat exchanger is necessary 125

Equipment discharges white mist 125

Humid installation site installation site is dirty and with dense oil mists soiled heat exchanger clogged air filter defective fan motor 125

Normal 125

Normal mist is generated due to defrosting operation 125

Remove the source of humid condition 125

Remove the source of oil mist or dust 125

Supposed causes 125

Troubleshooting 125

After vacuum drying charge correct amount of refrigerant 126

All models of skyair series 126

Applicable model 126

Correct piping manually or attach a dead weight to pipe 126

Correction of installation reinforcement for ceilings or walls 126

Defective installation overcharge of refrigerant air mixed in refrigerant system flushing noise due to refrigerant shortage sound of shoo 126

Disassemble and remove parts contact 126

Equipment produces loud noise or vibration 126

Insert cushion materials to the pipe support such as saddle 126

Insert shock absorber in mounting section or strengthen the mounting section 126

It is normal 126

Normal 126

Normal creak generates by shrinkage of resin parts due to temperature change 126

Normal operation sound of draining device 126

Normal the sound is flushing noise of gas refrigerant inside air conditioning unit 126

Supposed causes 126

Troubleshooting 126

All models of skyair series 127

Applicable model 127

Carpet animal hair application cloth shop 127

Dust collected inside the indoor unit are blown out cleaning for inside of indoor unit is necessary 127

Equipment discharges dust 127

Install the air filter 127

Supposed causes 127

Troubleshooting 127

Applicable model 128

Remote controller lcd displays 128

Remote controller lcd displays 88 128

Supposed causes 128

The unit is checking to confirm that remote controller is normal indication appears for short time 128

Troubleshooting 128

Turn the switch to normal and reset power supply 128

Applicable models 129

Error decision conditions 129

Method of error detection 129

Remark 129

Supposed causes 129

Swing flap does not operate 129

Fhqg x36a a1p 130

Model connector for swing flap motor pcb fcqg x9a a2p 130

Service diagnosis 130

Symptom based troubleshooting esie15 13c 130

Troubleshooting 130

Foreword 131

Troubleshooting by led indications 131

Troubleshooting by led on outdoor unit pcb 131

Troubleshooting by led on the indoor unit 131

Procedure of self diagnosis by remote controller 132

Troubleshooting by remote controller 132

Wired remote controller brc1d528 132

1 checking a malfunction or warning 133

2 taking corrective action 133

Press the menu enter button to check the error code 133

Take the corrective action specific to the model 133

The following will be displayed on the screen when a malfunction or a warning occurs during operation check the malfunction code and take the corrective action specified for the particular model 133

Wired remote controller brc1e51 52a7 133

If unit stops due to an error the operation indicating led on the signal receiving part of indoor unit flashes the error code can be determined by following the procedure described below the error code is displayed when an operation error has occurred in normal condition the error code of the last problem is displayed 134

Up button down button 134

Wireless remote controller 134

Esie15 13c troubleshooting by remote controller 135

Service diagnosis 121 135

Error codes and description 136

Indoor unit 137

Outdoor unit 137

Safety devices 137

Applicable models 138

Error decision conditions 138

Indoor unit pcb abnormality 138

Method of error detection 138

Remote controller display 138

Replace the indoor unit pcb 138

Supposed causes 138

The error may be caused by an external factor rather than damaged parts locate the cause and correct the situation 138

Troubleshooting 138

Applicable models 139

Drain water level system abnormality 139

Error decision conditions 139

Method of error detection 139

Remote controller display 139

Supposed causes 139

Connect the drain pump 140

Connect the float switch 140

Connect the short circuit connector 140

Defective drain system 140

Replace the drain pump 140

Replace the float switch 140

Replace the indoor unit pcb 140

Replace the short circuit connector 140

Troubleshooting 140

Applicable models 141

Error decision conditions 141

Indoor unit fan motor abnormality 141

Method of error detection 141

Remote controller display 141

Supposed causes 141

Troubleshooting 141

Applicable models 142

Capacity setting abnormality 142

Capacity setting adaptor 142

Error decision conditions 142

Install a capacity setting adaptor 142

Method of error detection 142

Remote controller display 142

Replace the indoor unit pcb 142

Supposed causes 142

Troubleshooting 142

Applicable models 143

Error decision conditions 143

Method of error detection 143

Remote controller display 143

Supposed causes 143

Transmission error between indoor unit pcb and adaptor pcb 143

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 144

Check the panel pcb and indoor unit pcb 144

Connect the connector accurately 144

Eliminate the external factor 144

Normal operation 144

Replace the harness 144

Service diagnosis 144

Short circuit x8a 144

Troubleshooting 144

Troubleshooting by remote controller esie15 13c 144

Applicable models 145

C4 c5 c9 145

Error decision conditions 145

Method of error detection 145

Remote controller display 145

Supposed causes 145

Thermistor abnormality 145

Troubleshooting 145

Humidity sensor system abnormality 146

Applicable models 147

Error decision conditions 147

Malfunction of motion sensor floor temperature sensor 147

Method of error detection 147

Remote controller display 147

Supposed causes 147

Troubleshooting 147

Diagnosis flowchart 1 148

Service diagnosis 148

Troubleshooting by remote controller esie15 13c 148

Diagnosis flowchart 2 149

Esie15 13c troubleshooting by remote controller 149

Service diagnosis 135 149

Diagnosis flowchart 3 150

Service diagnosis 150

Troubleshooting by remote controller esie15 13c 150

Diagnosis flowchart 4 151

Esie15 13c troubleshooting by remote controller 151

Service diagnosis 137 151

Applicable models 152

Error decision conditions 152

Method of error detection 152

Remote controller display 152

Remote controller thermistor abnormality 152

Supposed causes 152

Troubleshooting 152

Outdoor unit pcb abnormality 153

Applicable models 154

Error decision conditions 154

High pressure abnormality detected by the high pressure switch 154

Method of error detection 154

Remote controller display 154

Supposed causes 154

Check 2 155

Check 8 155

Correctly connect 155

Open the stop valve 155

Refer to p 88 155

Refer to p 93 refer to p 93 155

Replace the connecting line 155

Replace the high pressure switch 155

Replace the high pressure switch with no continuity 155

Replace the indoor unit intermediate heat exchanger thermistor 155

Replace the outdoor unit intermediate heat exchanger thermistor 155

Replace the outdoor unit pcb a1p 155

Troubleshooting 155

Actuation of pressure sensor 156

Applicable models 156

Error decision conditions 156

Method of error detection 156

Remote controller display 156

Supposed causes 156

Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 157

Check 1 157

Check 3 157

Esie15 13c troubleshooting by remote controller 157

Refer to p 85 157

Refer to p 89 refer to p 89 157

Service diagnosis 143 157

Troubleshooting 157

Applicable models 158

Compressor motor lock 158

Connect correctly 158

Error decision conditions 158

Method of error detection 158

Open the stop valve 158

Remedy the cause 158

Remote controller display 158

Replace the compressor 158

Supposed causes 158

Troubleshooting 158

Applicable models 159

Ask repair so that the supply voltage will be within the normal range 159

Error decision conditions 159

Method of error detection 159

Outdoor unit fan motor abnormality 159

Remote controller display 159

Supposed causes 159

Troubleshooting 159

Check 5 160

External factor noise etc 160

Refer to p 91 160

Remove the foreign matter 160

Replace the fan motor 160

Replace the fuse 160

Replace the outdoor unit inverter pcb 160

Service diagnosis 160

Troubleshooting by remote controller esie15 13c 160

Applicable models 161

Electronic expansion valve abnormality 161

Error decision conditions 161

Method of error detection 161

Remote controller display 161

Supposed causes 161

1 connector and indoor unit pcb 162

Check 6 162

Connect properly 162

Mount properly 162

Refer to p 91 refer to p 91 162

Replace the coil of the electronic expansion valve 162

Troubleshooting 162

Check 1 163

Check 7 163

Esie15 13c troubleshooting by remote controller 163

External factor noise etc 163

Refer to p 85 163

Refer to p 92 163

Replace the defective thermistor 163

Replace the outdoor unit pcb a1p 163

Replace the pressure sensor 163

Service diagnosis 149 163

Applicable models 164

Discharge pipe temperature control 164

Error decision conditions 164

Method of error detection 164

Remote controller display 164

Supposed causes 164

1 temperature varies depending on model type 165

Abnormality in refrigerant system such as refrigerant shortage faulty compressor etc conduct inspection 165

Attach the thermistor 165

Check 1 165

Connect correctly 165

Refer to p 85 refer to p 85 165

Replace the discharge pipe thermistor 165

Replace the outdoor unit pcb a1p 165

Troubleshooting 165

Applicable models 166

Error decision conditions 166

High pressure switch system abnormality 166

Method of error detection 166

Remote controller display 166

Supposed causes 166

Troubleshooting 166

Applicable models 167

Error decision conditions 167

Low pressure switch system abnormality 167

Method of error detection 167

Remote controller display 167

Supposed causes 167

Troubleshooting 167

Applicable models 168

Error decision conditions 168

H9 j3 j5 j6 j7 j8 168

Method of error detection 168

Remote controller display 168

Supposed causes 168

Thermistor system abnormality 168

Troubleshooting 168

Applicable models 169

Error decision conditions 169

Method of error detection 169

Outdoor unit pcb abnormality 169

Remote controller display 169

Supposed causes 169

Check 5 170

Connect securely 170

External factor noise etc 170

Refer to p 91 170

Replace the fan motor 170

Replace the fuse use only specified fuses 170

Replace the outdoor unit pcb a1p 170

Request an improvement to make the power supply voltage fall within the standard range 170

Troubleshooting 170

Applicable models 171

Error decision conditions 171

Method of error detection 171

Radiation fin temperature rise 171

Remote controller display 171

Supposed causes 171

Troubleshooting 172

Applicable models 173

Error decision conditions 173

Method of error detection 173

Open the stop valve 173

Output overcurrent detection 173

Remote controller display 173

Replace the compressor 173

Supposed causes 173

Troubleshooting 173

Check 4 174

Compressor inspection inspect according to the diagnosis procedure for abnormal noise vibration operating status etc of the compressor 174

Correct the power supply 174

Go to the other troubleshooting 174

Normal operation 174

Refer to p 90 174

Replace the outdoor unit pcb 174

Service diagnosis 174

Troubleshooting by remote controller esie15 13c 174

Applicable models 175

Electronic thermal time lag 175

Error decision conditions 175

Method of error detection 175

Remote controller display 175

Supposed causes 175

1 secondary electronic thermal detection value 176

Check 2 176

Check 4 176

Check 8 176

Compressor inspection inspect according to the diagnosis procedure for abnormal noises vibration operating status etc of the compressor 176

Open the stop valve 176

Refer to p 88 refer to p 88 176

Refer to p 90 176

Refer to p 93 176

Remedy the cause check for excessive refrigerant charging 176

Replace the outdoor unit pcb a1p 176

Troubleshooting 176

Applicable models 177

Error decision conditions 177

Method of error detection 177

Remote controller display 177

Stall prevention time lag 177

Supposed causes 177

Check 4 178

Compressor inspection inspect according to the diagnosis procedure for abnormal noises vibration operating status etc of the compressor 178

Insufficient pressure equalization check refrigerant system 178

Open the stop valve 178

Refer to p 90 178

Replace the compressor 178

Replace the outdoor unit pcb a1p 178

Service diagnosis 178

Troubleshooting 178

Troubleshooting by remote controller esie15 13c 178

Transmission system abnormality between control and inverter pcb 179

Applicable models 180

Error decision conditions 180

Field factors 180

Method of error detection 180

Open phase or power supply voltage imbalance 180

Remote controller display 180

Replace the outdoor unit inverter pcb 180

Supposed causes 180

Troubleshooting 180

Applicable models 181

Defective capacity setting 181

Error decision conditions 181

Method of error detection 181

Remote controller display 181

Supposed causes 181

Troubleshooting 181

Applicable models 182

Error decision conditions 182

Method of error detection 182

Refrigerant shortage alert 182

Remote controller display 182

Supposed causes 182

Troubleshooting 182

Applicable models 183

Error decision conditions 183

Method of error detection 183

Refrigerant shortage error 183

Remote controller display 183

Supposed causes 183

Check 9 184

Check the refrigerant piping system for clogging 184

Collect refrigerant and recharge a proper amount of refrigerant after vacuum drying 184

Match wiring and piping connection 184

Refer to p 94 184

Service diagnosis 184

Troubleshooting 184

Troubleshooting by remote controller esie15 13c 184

Applicable models 185

Error decision conditions 185

Method of error detection 185

Power supply voltage abnormality 185

Remote controller display 185

Supposed causes 185

Check 5 186

Refer to p 91 186

Service diagnosis 186

Troubleshooting 186

Troubleshooting by remote controller esie15 13c 186

Applicable models 187

Error decision conditions 187

Method of error detection 187

Remote controller display 187

Supposed causes 187

Transmission error between indoor and outdoor unit 187

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 188

Connect the connecting line of indoor and outdoor unit correctly 188

Field factor 188

Is connector not connected to the x806a on outdoor unit pcb x804a x805a is connected correctly 188

Replace the outdoor fan motor 188

Service diagnosis 188

Troubleshooting 188

Troubleshooting by remote controller esie15 13c 188

Wire correctly 188

Wire correctly and securely fasten the terminal screws 188

1 on for 0 second and off for 0 second blink about 25 times for 10 seconds normally on for 0 second and off for 0 second blink about 12 times for 10 seconds 2 optional accessories refer to adaptor for wiring auto grill and other accessories 189

Make the fuse normal in case of a fuse can be replaced replace the fuse in case of a fuse cannot be replaced replace pcb 189

Replace the indoor unit pcb 189

Replace the outdoor fan motor 189

Replace the outdoor unit pcb a1p 189

There is no problem with the unit an external factor noise etc other than unit failure may be the cause 189

All models of indoor unit 190

Applicable models 190

Connection of two main remote controllers when using 2 remote controllers defective remote controller defective of indoor unit pcb external factor noise etc 190

Error decision conditions 190

Method of error detection 190

Normal transmission does not continue for specified period 190

Remote controller display 190

Supposed causes 190

The error is generated when the micro computer detects that the transmission between the indoor and the outdoor unit is not normal over a certain amount of time 190

Transmission error between remote controller and indoor unit 190

Troubleshooting 190

Applicable models 191

Error decision conditions 191

Method of error detection 191

Remote controller display 191

Replace the remote controller wiring 191

Supposed causes 191

Transmission error between main remote controller and sub remote controller 191

Troubleshooting 191

Turn off the power once and restart operation replace the remote controller pcb if any error is generated 191

Turn the ss 1 switch of one remote controller to main turn off the power supply and restart operation 191

Applicable models 192

Error decision conditions 192

Field setting switch abnormality 192

Method of error detection 192

Remote controller display 192

Supposed causes 192

Adopt only one of the remote controllers 193

Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 193

Check the power supply system inside the indoor unit 193

Connect correctly 193

Could be wrong wiring check again 193

Esie15 13c troubleshooting by remote controller 193

Normal 193

Remove the jumper group control in the same system is not allowed 193

Replace the indoor unit pcb 193

Service diagnosis 179 193

Set correctly 193

Troubleshooting 193

Address duplication of centralized controller 194

Uc address duplication of centralized controller 194

Applicable models 195

Error decision conditions 195

Method of error detection 195

Remote controller display 195

Supposed causes 195

Transmission error between centralized controller and indoor unit 195

Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 196

Correctly connect the connector 196

Correctly connect the wiring 196

Make correct setting of the centralized control group no 196

Make the wiring correct 196

Replace the indoor unit pcb 196

Replace the remote controller pcb 196

Reset the all remote controllers power supply at the same time 196

Service diagnosis 196

Troubleshooting 196

Troubleshooting by remote controller esie15 13c 196

Applicable models 197

Error decision conditions 197

Method of error detection 197

Remote controller display 197

Supposed causes 197

Transmission error between indoor and outdoor unit piping and wiring mismatch refrigerant shortage 197

Check the refrigerant piping system for clogging 198

Correctly connect inter unit wiring between the indoor and outdoor units 198

Match the connection of the inter unit wiring and piping between the indoor and outdoor units 198

Recharge a proper amount of refrigerant after refrigerant recovery and vacuum drying 198

Troubleshooting 198

Check 1 199

Check the thermistors 199

Checking 199

For more information about these thermistors see wiring diagrams on p 99 functions of main components and thermistors on p 8 199

If the cause of the problem is related to the thermistors then the thermistors should be checked prior to changing the pcb 199

Outdoor 199

Overview of thermistors 199

The table below contains an overview of the thermistors indoor 199

Thermistors 199

To check the thermistors proceed as follows 199

Indoor unit thermistor r1t suction air thermistor r2t heat exchanger thermistor r3t intermediate heat exchanger thermistor 200

Outdoor unit rzqg thermistor r1t outdoor air thermistor r3t suction pipe thermistor r4t heat exchanger distributor pipe r5t intermediate heat exchanger thermistor r6t liquid pipe thermistor r10t radiation fin thermistor 200

Service diagnosis 200

Thermistor resistance temperature characteristics 200

Troubleshooting by remote controller esie15 13c 200

Esie15 13c troubleshooting by remote controller 201

Outdoor unit 201

Rzqg thermistor r2t discharge pipe thermistor 201

Service diagnosis 187 201

Abnormally high pressure level is mostly caused by the condenser side the following contents are provided by service engineer based on their field checks further the number is listed in the order of degree of influence 202

Check 2 202

Evaluation of abnormal high pressure 202

In cooling operation 202

In heating operation 202

Abnormally low pressure level is mostly caused by the evaporator side the following contents are provided based on field checking of service engineer further the number is listed in the order of degree of influence 203

Check 3 203

Evaluation of abnormal low pressure 203

In cooling operation 203

In heating operation 203

Check 4 204

Check for power transistor 204

Judgement according to the continuity check by using an analog tester 1 do not touch the charged area high voltage for 10 minutes after turning the power supply off 2 if you must touch such an area make sure that the power supply voltage of power transistor is 50 v or less 3 disconnect the connector of the outdoor unit fan motor when the outdoor unit fan is rotating against a strong wind the condenser is charged and electric shock may result therefore disconnect the connector from the outdoor unit fan motor after confirming that the outdoor unit fan has stopped 4 before measuring the continuity disconnect the connection between compressor and power transistor 5 measure the continuity in the following procedure judgement normal if the continuity check results in the following 204

Note if there is continuity the resistance should be the same as each phase if a digital tester is used for the measurement of continuity and continuity may be reversed 204

Power transistor on inverter pcb 204

1 turn the power supply off 2 with the fan motor connector disconnected measure the resistance between each pin then make sure that the resistance is more than the value mentioned in the following table 205

Check 5 205

Check 6 205

Electronic expansion valve connector and coil resistance criteria 205

Fan motor signal line 205

Check 7 206

Check for factors causing wet operation 206

1 high pressure intermediate heat exchanger thermistor 3 207

1 high pressure pressure sensor 207

2 low pressure pressure sensor 2 low pressure intermediate heat exchanger thermistor 3 207

3 this measured temperature is used to calculate the equivalent saturation pressure of the refrigerant refer to p 00 207

As criteria for judging whether refrigerant is excessively charged or not refer to the following operating conditions 207

Check 8 207

Check for excessive refrigerant charging 207

Cooling heating 207

Esie15 13c troubleshooting by remote controller 207

In cooling operation 1 because high pressure rises due to excessive charging overload control is carried out and capacity tends to run short 2 considering pressure load compressor discharge pipe temperature is low 3 subcooled degree of condensate liquid becomes large therefore temperature of blown air passing through subcooled part decreases in heating operation 207

Service diagnosis 193 207

Check 9 208

Clogged points 208

Temperature differences must occur before or after the clogged points 208

1 high pressure intermediate heat exchanger thermistor 3 2 low pressure pressure sensor 209

3 this measured temperature is used to calculate the equivalent saturation pressure of the refrigerant refer to p 00 209

As criteria for judging whether refrigerant is inadequate or not refer to the following operating conditions 209

Check 10 209

Check for inadequate refrigerant 209

Cooling 209

Esie15 13c troubleshooting by remote controller 209

In cooling operation 1 as suction superheat degree increases due to refrigerant shortage the electronic expansion valve tends to open opens fully in order to avoid overheat operation 2 in response to decreased evaporator capacity caused by refrigerant shortage capacity is controlled in the inverter in order to maintain low pressure which results in a decrease in frequency 3 because of 1 and 2 above the compressor frequency decreases despite a large difference large load between temperature set by the remote controller and indoor suction temperature resulting that cooling capacity becomes unavailable 4 if refrigerant shortage worsens the electronic expansion valve remains fully open and suction superheat degree further increases in addition because the compressor frequency drops to the level of the lowest frequency 52 hz and the refrigerant flow rate decrease low pressure cannot be maintained 209

Service diagnosis 195 209

1 high pressure pressure sensor 210

2 low pressure intermediate heat exchanger thermistor 3 210

3 this measured temperature is used to calculate the equivalent saturation pressure of the refrigerant refer to p 00 210

Heating 210

In heating operation 1 as suction superheat degree increases due to refrigerant shortage the electronic expansion valve tends to open opens fully to avoid overheat operation 2 as suction superheat degree increases due to refrigerant shortage compressor frequency decreases because suction superheat degree is controlled in order to prevent oil to the outdoor heat exchanger from being retained 3 because of 1 and 2 above evaporator capacity and compressor frequency decrease despite a large difference large load between temperature set by the remote controller and indoor suction temperature resulting that high pressure cannot be maintained and heating capacity becomes unavailable also a decrease in evaporator capacity frequently puts the system in defrost operation 4 if refrigerant shortage worsens high pressure becomes smaller than saturated pressure equivalent to indoor heat exchanger temperature or indoor suction temperature 210

Service diagnosis 210

Troubleshooting by remote controller esie15 13c 210

Part 6 appendix 211

Notes 1 the pipes between the branch and the indoor units should have the same size as the indoor connections 2 the check valve is only present in following models rzqg71l rzqsg100l and rzqsg125l 212

Pair application 212

Piping diagrams 212

Rzqg l9v1 212

3 4 5 6 213

A1p a2p bs1 bs4 c1 c3 ds1 e1h f1u f2u f6u f7u f8u h1p h7p hap k1r k2r k10r k11m k13r k15r l1r m1c m1f 213

A1p a2p bs1 bs4 c1 c3 ds1 e1h f1u f4u f6u f7u f8u h1p h7p hap k1r k10r k11m k13r k15r k4r l1r l3r m1c m1f m2f 213

A1p l1r 213

Appendix 199 213

Blk wht red 213

Bottom plate heater option 213

Bottom plate heater option fuse 213

Bs1 bs2 bs3 bs4 213

C1 v3d 213

Capacitor dip switch 213

Colours blk black red red blu blue wht white grn green ylw yellow brn brown org orange pnk pink this wiring diagram applies only to the outdoor unit refer to the wiring diagram sticker on the back of the front plate for how to use the bs1 bs4 and ds1 switches 213

Esie15 13c wiring diagrams 213

F8u f7u 213

Fuse t 3 5a 250v fuse f 1 a 250v light emitting diode service monitor is orange light emitting diode service monitor is green magnetic relay y1s magnetic relay 213

Fuse t 5 a 250v fuse f 1 a 250v light emitting diode service monitor is orange light emitting diode service monitor is green magnetic relay y1s magnetic relay 213

Grn ylw 213

H1p h3p h5p h7p 213

H2p h4p h6p 213

Igbt power module diode module 213

Indoor 213

Insulated gate bipolar transistor igbt 213

Magnetic relay e1h option 213

Magnetic relay magnetic contactor 213

Motor fan 213

Motor fan upper motor fan lower 213

N neutral l live field wiring terminal 213

N neutral l live field wiring terminal colours blk black red red blu blue wht white grn green ylw yellow brn brown org orange pnk pink this wiring diagram applies only to the outdoor unit refer to the wiring diagram sticker on the back of the front plate for how to use the bs1 bs4 and ds1 switches 213

Noiseless earth 213

Notes 1 213

Outdoor 213

Outdoor unit 213

Printed circuit board main printed circuit board 213

Protective earth noiseless earth option connector connection 213

Protective earth option connector connection 213

Ps earth leakage circuit breaker 30ma 213

Push button switch 213

Q1di r1 r5 r1t r2t r3t r4t r5t 213

Q1di r2 r5 r6 r1t r2t r3t r4t r5t 213

R6 k15r 213

R6t thermistor fin 213

R7t r8t 213

R7t rc s1ph s1pl tc v1d v4d v1r v2r v1t v3t x1m y1e y1s z1c z6c z1f z6f 213

Rc k10r k11m 213

Rc s1ph s1pl tc v1d v3d v1r v2r v1t v2t x1m y1e y1s z1c z6c z1f z3f 213

Reactor motor compressor 213

Red blu 213

Refer to the combination table and the option manual for how to connect the wiring to __________ and __________ 213

Resistor thermistor air thermistor discharge 213

Rzqg100 140l 213

Rzqg71l 213

S1pl p 213

See note 7 213

See note 8 213

Signal receiver circuit high pressure switch low pressure switch signal transmission circuit 213

Switching power supply 213

Terminal strip 213

Terminal strip electronic expansion valve solenoid valve 4 way valve noise filter ferrite core noise filter 213

Thermistor heat exchanger thermistor heat exchanger middle thermistor liquid 213

Thermistor positive temperature coefficient 8 213

Thermistor suction 213

V1t x25a 213

When operating do not short circuit protection device s s1ph s1pl refer to the service manual for instructions on how to set the selector switches ds1 the factory setting of all switches is off 213

Wiring diagrams 213

X11a x12a 213

X31a x32a 213

Z2 c n 3 213

Z3 c n 1 213

Z4 c n 4 213

Z5 c n 6 213

Z6 c n 1 z1 c n 5 213

Appendix 214

Thermodynamic characteristic of r 410a 214

Thermodynamic characteristic of r 410a esie15 13c 214

Caution 215

Removing the switchbox 215

Daikin RZQG71L9V1B [100/215] 3 connect a refrigerant recovery unit to perform refrigerant recovery 4 upon completion of refrigerant recovery turn off refrigerant recovery mode by taking the following steps or turning off the power of outdoor unit

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