![Gree HOME GMV [232/367] Low pressure protection](/img/pdf.png)
Gree HOME GMV [232/367] Low pressure protection
![Gree HOME GMV [232/367] Low pressure protection](/views2/1052459/page232/bge8.png)
Dc Inverter VRF plus Water Heater Solution Service Manual SERVICING
2.2 Low-pressure protection
低压保护
用压力
表测量压力是否真正
为低压？
检查
系统中制冷剂量是否
太少？
检查
室内机运行模式的设定
是否恰当？
检查室外
机大小阀门是否完全
打开？
检查
室外机面板是否盖上
密封？
检查室内、
外机换热器进出风是否
顺利？
检查
室内、外机风机是否
运行？
检查室内
机扫风叶片是否完全
打开？
检查室外机
容量输出是否与室内机
能力需求相同？
检查室内
机电子膨胀阀动作是否
正常？
检查室内外
机过滤网或换热翅片是
否有脏堵？
系统管路有堵塞
参照维修和保养
使阀体和线圈啮合
参照室内外机拨码
测量扫风电机和
信号输入情况
测量风机电机和
信号输入情况
清除障碍物
盖好面板
完全打开阀门
参照室内机说明书
参照低压传感器故障
依据铭牌所标称的制冷剂量和
计算的制冷剂追加量来加注制冷剂
主要检查各室内机与主管连接的进出口，还有室内、外机的电子
膨胀阀等处。更换电子膨胀阀、干燥过滤器等零部件
否
否
否
否
否
否
否
否
否
否
是
是
是
是
是
否
是
是
是
是
是
是
Low-pressure protection
Refer to low pressure sensor error
Refer to the Instruction Manual for Indoor Unit
Fully open the valve
Cover up the front panel properly
Remove the obstructions
Measure the fan motor and
signal input
Measure the swing motor
and signal input
Refer to the dial-up of indoor and outdoor unit
Engage the valve body with the coil
Refer to the Repair and Maintenance
The system pipe is blocked
Focus on checking the inlet and outlet of the connection between indoor units and main
pipe. Also focus on checking the electronic expansion valve of indoor unit and outdoo
r
unit. Replace the electronic expansion valve, drying filter and other parts
Add refrigerant according to the nominal refrigerant volume
on nameplate and the calculated charge volume
Use pressure gauge to
measure if the pressure
is reall
y
low?
Check if the refrigerant in
the system is too low?
Check if the operation
mode of indoor unit is set
p
ro
p
erl
y
?
Check if the gas valve and
liquid valve of outdoor unit
are fully open?
Check if the front panel of
outdoor unit is covered
tightly?
Check if the air inlet and outlet
of the indoor and outdoor
exchanger is smooth?
Check if the indoor and
outdoor fans run normally?
Check if the indoor swing
louver is fully open?
Check if the capacity output of
outdoor unit is equal to the
capacity demand of indoor
units?
Check if the indoor
electronic expansion valve
can work normally
Check if the indoor / outdoor
filters or radiating fins are
dirty or blocked?
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
Yes
Содержание
- Dc inverter vrf plus water heater solution service manual 1
- Gree electric appliances inc of zhuhai 1
- T1 r410a 1
- Contents 2
- Models list 6
- Note 1ton 12000btu h 3 17kw 6
- Outdoor units 6
- Product 6
- Indoor unit 7
- Hydro box 13
- Model capacity ref power supply appearance 13
- Water tank 14
- Example gmv r22g nab k a wall mounted indoor unit of gree and the nominal cooling capacity is 2 kw it s the second generation product 15
- Nomenclature 15
- Nomenclature of indoor unit 15
- Nomenclature of outdoor unit 15
- Represents 3 kw btu h kw 3412 15
- Nomenclature of hydro box 16
- Nomenclature of water tank 16
- Function 17
- 415v 3ph 50hz 18
- Constant speed scroll 1 18
- Product data 18
- Product data of outdoor 18
- Product data of indoor unit 19
- Package dimensions 28
- Unit dimensions w d h mm 28
- W d h mm 28
- Connecting pipes 31
- Cooling 44
- Heating 44
- Operation range 44
- Hydro box 45
- Tube in tube tube in tube 45
- Tube in tube tube in tube tube in tube tube in tube 46
- Water tank 47
- Operating temperature range 48
- Correction for product capacity 49
- 1 change rate of cooling capacity 52
- 2 change rate of heating capacity if there is snow on outdoor heat exchanger or the outdoor temp is lower than 6 when heating the frosting 52
- 20 30 50 60 l m 80 70 90 100 52
- Dc inverter vrf plus water heater solution service manual product 52
- L length of single pass equivalence pipe 52
- Maybe occurs which will reduce the heating performance of the unit 52
- On thermostat is 16 and heating setting is 30 52
- Principle of work 52
- System flowchart 52
- The below diagrams illustrate change rate of capacity under standard operating mode cooling setting 52
- By 4 pin communication wire address codes of display and mainboard of indoor unit should be set during 55
- Can t be the same mainboard of hydro box and display panel don t need the address code the indoor unit of vrf 55
- Control 55
- Control device of the outdoor unit consists of two parts as viewed from function which are master control 55
- Control of the unit 55
- Dc inverter vrf plus water heater solution service manual control 55
- Engineering installation which shall be the same for the same indoor unit but the address codes of different units 55
- Indoor units and one hydro box they are connected with each other by communication wire with 2 pin 3 pin 55
- Integral control of the unit 55
- Needle stand the connections between indoor unit and display panel and between mainboard and hydro box are 55
- Nixie tube 55
- Schematic diagram of control of the units 55
- System and inverter drive control system they are in a same control panel 55
- The units consists of indoor unit hydro box and outdoor unit one outdoor unit can maximum connect 16 sets 55
- Units are applicable to all digital and inverter outdoor units 55
- Operation flowchart 58
- Heating and water heating operation 71
- Control function of the outdoor unit 72
- Control function of the units 72
- Control function of indoor unit 76
- 1 2 3 4 室内设定温度 77
- 中风档 77
- 低风档 77
- 制冷自动风速 菱格风 77
- 室内环境温度 77
- 室内设定温度 1 1 室内环境温度 77
- 高风档 77
- 1 2 1 2 3 78
- 中风档 78
- 低风档 78
- 制热自动风速 菱格风 78
- 室内环境温度 78
- 室内环境温度 1 1 室内设定温度 78
- 室内设定温度 78
- 膨胀阀off 78
- 膨胀阀on 78
- 高风档 78
- 一分钟内达到阀值 79
- 设定风速 79
- 风机关 79
- 高风档 79
- 具有温度补偿的温度调节 80
- 室内环境温度 1 1 室内设定温度 回风口温度 80
- 室内环境温度 回风口温度 80
- 室内设定温度 1 2 3 1 80
- 标准情况下的温度调节 80
- 膨胀阀off 80
- 膨胀阀on 80
- M 1m 1m 1m 1m 82
- 故障产生 82
- 故障恢复 82
- Dial up code table 4 positions dip switch 83
- Control function of hydro box 84
- Tube in tub 84
- Wireless remote controller 85
- Dc inverter vrf plus water heater solution service manual control 86
- Normal procedure 1 press on off button after connected with the power then the unit is operating 2 press mode button to choose the need operation mode 3 press fan button to set the fan speed 4 press button to set the need temp selectable procedure 5 press sleep mode to set the sleep state 6 press timer off button to set the set time note when the operating mode selected by the indoor unit is clash with the one selected by the outdoor unit the remote controller will display the operating clash after 5 seconds and the power light will flicker then the indoor unit turns off at this time the units will become normal after the operating mode of the indoor unit is changed to cooperate with the outdoor unit cool mode can cooperate with dry mode and fan mode can cooperate with any mode 86
- Operation procedure 86
- This type of remote control is a kind of general use remote control that is suitable for several types function of air conditioner units please understand that the functions and buttons that are not suitable for this air conditioner will not be introduced 86
- How to insert batteries 87
- Insert 2aaa dry cell battaries attachment 87
- Re attach the cover 87
- Remove the cover 87
- Two batteries two aaa dry cell batteries are used by the remote control 1 remote the cover from the back of the remote control downward take out the worn batteries and insert two new ones make sure the two poles are correct 2 re attach the cover 87
- Wired controller 88
- Wired controller of indoor unit 88
- Z60151f z60351f 88
- Z63151f z63351f 88
- Notice for installation under the guidance of fig 0 90
- Wired remote controller for hydro unit 90
- Field controller 101
- Function 101
- Operation view 102
- Display view 103
- Before installation and connection make sure the power supply is off after installation and connection check the connection result again to prevent loose or short there are 4 connection lines included in the 4 core twisted pair line to the controller from cn1 or the upper and right cn2 to the upper they respectively are ground line gnd communication line a a communication line b b and power cord 12 v 104
- Connection between region controller and the unit 104
- Note during following connection of wirings pay special attention to them to avoid malfunction to units for electromagnetic interference ① keep the signal lines or wirings communication of region controller or wired controller at least 20 cm from the power cords or connecting lines between indoors and outdoors to prevent abnormal communication ② shielding twisted pair line must be adopted as signal line or wiring communication once the unit is installed in the place where there is serious electromagnetic interference 104
- Centralized controller 105
- Function 105
- Instruction to distribution of unit and installation of equipment 105
- Main characteristics of centralized controller a set of centralized controller can control 64 communication modules and can connect to as much as 1024 indoor units it can conduct individual control with any separated area or unified control it can monitor or control on off mode temperature setting and timer on off of indoor unit etc it can realize the central single or select control to all indoor units it can organize several indoor units into groups as you desired and conduct unified control group select control error contents are shown by codes corresponding communication module numbers of the indoor units with error contents would blink for rapid inspection and repair t 6 case study 105
- Frame diagram of system net 106
- Instruction to frame diagram of system net 107
- Instruction to installation procedure of system 108
- Step 1 integral design of the whole system 108
- Step 2 wiring and installation 108
- Step 3 there are two methods of dip address setting of communication module 112
- Step 4 system setting of centralized controller 115
- Step 5 troubleshooting during installation of centralized controller 116
- Connection between the computer and the unit 118
- Function 118
- Monitoring software 118
- Notice 118
- Wiring diagram 119
- Hardware 120
- Note lines without 3 way telephone connector can be connected by welding and protected with insulating tape to avoid oxidization and short circuit 125
- Installation 127
- Precautions for installation 127
- Key points of installation 128
- Dc inverter vrf plus water heater solution service manual installation 130
- Flow chart of installation 130
- 交付使用说明书 130
- 保压检漏 130
- 保温 130
- 吹洗和保压检漏 130
- 地址拨码 130
- 安装室内机 130
- 安装远 程监控 连接 通讯线 电源线 连接 130
- 安装连接管 安装室外机 130
- 打开阀门 130
- 抽真空 130
- 排水管 安装 130
- 机组调试 130
- 材料的选购 130
- 焊接 130
- 现场安装位置审核 130
- 竣工图 130
- 设计交底 130
- 试运行检查 室内机 130
- 连接室内机和室外机 130
- 连接电源线 130
- 追加制冷剂 130
- 风量 噪音检查 130
- Common tools 131
- The tools which can t be mixed for different refrigerants 131
- Tools for installation 131
- Circulating pipe 132
- Discharge pipe for condensate 132
- Refrigerants pipeline 132
- Selection of installation material 132
- Communication wire and control wire 133
- Conductor and shall comply with related national standards and meet the requirements of 133
- Heat insulating materials 133
- Power cord 133
- Suspender and bracket 133
- Units loads 133
- Gmv pds100w n 134
- Installation schematic diagram 134
- Installation schematic diagram of units with side air outlet 134
- Installation schematics a 134
- Outlet 134
- There are a b c three installation methods for hydro box of units with side air 134
- Installation schematic diagram of units with top air outlet 135
- Installation schematics b 135
- Installation schematics c 135
- A only water tank 136
- B with floor heater and water tank 136
- Skecth map of installatio 136
- C with solar and water tank 137
- Skecth map of installatio 137
- D with solar floor heater and water tank 138
- Skecth map of installatio 138
- E for floor heating 139
- Hoisting of unit 139
- Installation of outdoor unit 139
- Skecth map of installatio 139
- Transport the unit to a place as close as possible to the installing site before taking it out of the packaging box cautions never put any object on top of the unit before and after installation to lift the machine with crane please use two ropes to lift the outdoor unit hoisting method the machine must be balanced when it is lifted check and ensure that the machine can be lifted up safely and stably cautions do not attach the ropes to the lower wood frame of the packaging box 139
- No limitation to wall height 144
- For the state that the units are surrounded by walls 145
- Install the units back to back 145
- It is recommended to install the units at the same directions 145
- Correct 146
- Dc inverter vrf plus water heater solution service manual installation 146
- Height of base in consideration of snow 146
- In consideration of seasonal wind during installation of outdoor units 146
- In consideration of snow during installation of outdoor units 146
- Incorrect 146
- It is required to equip protectors on air outlet and air inlet and a higher foundation base to prevent 146
- Protector of air inlet provide at field 146
- Protector of air outlet provide at field 146
- Seasonal wind 146
- Snow from covering air inlet and outlet 146
- Installation of indoor unit 147
- The following figure is applicable to the indoor units of gmv l r22p nab k gmv l r22ps nab k gmv l r28p nab k gmv l r28ps nab k g mv l r36p nab k gmv l r36ps nab k 149
- Cut off new wind baffle cut off 151
- ① selection of style of return air 151
- ② installation of fresh air duct 1 when fresh air duct is need to be connected cut the fresh air baffle as shown in fig plug up the gap of fresh air baffle by sponge if fresh air duct is not used 2 install the circle flange so that the fresh air duct can be connected as fig 3 well sealed and heat preservation should be done for both air duct and round air duct 4 fresh air should be the air after filtrate treatment 151
- Note fig only shows the install of rear return air inlet button return air inlet can also been installed according to the actual installation need the method of installation is similar to the rear return air inlet s the supply air duct which is rectangle or circle and connect with the air inlet of the indoor unit should at least keep one open the circle air duct type should adopt circle preservation pipe to transmit cool heat air to room the circle air duct should add a transitionary pipe which size should match the size of air supply duct of the unit after connecting the transitionary pipe install the circle air outlet vent connection pipe whose longest length to every individual air outlet vent should not over 10m ducted type indoor unit model 70 can share 3 trainsitional pipe while model 100 120 can share 4 the transitional pipe whose straight length is 200 and circle air outlet connection pipe whose diameter is 200 produced by our company can be ordered separately as standard fitti 152
- Pipe to the farthest air supply vent plus the general length of return air duct to the 152
- Relative farthest return air vent 152
- The longest length of air duct means the general length of the wing supply 152
- The straight length of transitional air duct should not shorter than 200mm 152
- To the unit with auxiliary heater if the circle air duct is need to connected 152
- ③ installation of air supply duct 152
- ④ setting hole for maintenance after installation of hidden duct type unit manhole must be provided in ceiling on the electric box side of the indoor unit in respect to the manhole the following points must be taken into consideration for access the manhole size shall be larger than 500mm 500mm the manhole must be at a possible easily accessible for repair of electric elements and pipe the air inlet may also be used as manhole for repair of motor 152
- Gmv l r28t na k gmv l r36t na k gmv l r45t na k gmv l r50t na k gmv l r56t na k gmv l r63t na k gmv l r71t na k gmv l r80t na k gmv l r90t na k gmv l r100t na k gmv l r112t na k gmv l r140t na k 154
- Dc inverter vrf plus water heater solution service manual installation 155
- Gmv l r22t naa k 155
- Gmv l r22t naa k gmv l r28t naa k gmv l r36t naa k gmv l r45t naa k 155
- Gmv l r28t naa k gmv l r36t naa k gmv l r45t naa k 155
- Installation demonstration 155
- Installation space requirements gmv l r28t na k gmv l r36t na k gmv l r45t na k gmv l r50t na k gmv l r56t na k gmv l r63t na k gmv l r71t na k gmv l r80t na k gmv l r90t na k gmv l r100t na k gmv l r112t na k gmv l r140t na k 155
- M odel 155
- The primary step for installing the indoor unit when attach ing the hoisting stand on hoisting screw do use nut and gasket individually at the upper and lower of the hoisting stand to fix it the use of gasket anchor board can prevent gasket breaking off 2 use installation cardboard please refer t o the installation cardboard about the dimension of ceiling opening the central mark of the ceiling opening is marked on the install cardboard install the install ation cardboard on the unit by bolt 3 piece and fix the angle of the drainage 155
- Unit m m 155
- Unit mm 155
- Drain stepup pipe note 157
- Instruction 158
- Drilling the hole of the ceiling and installing the units must be operated by professionals 159
- Important notice 159
- Hoisting the main body 161
- Hoisting the main body of the unit 161
- Sponge gray drainage hose notice for drainage raising pipe 162
- As shown in fig install the panel body and then tighten the screws according to the 163
- As shown in fig install the panel on the panel and then turn it for fastening 163
- Front panel body and installation 163
- Remark the appearance will be different according to the models 163
- Schematic diagram of installation spaces 163
- Sequences in the figures 163
- Take off the front panel from the panel body 163
- Wall mounted type 163
- Applicable to rq20la k rq30la k 170
- Applicable to rqd20la m rqd30la m 170
- Applicable to rqd8ga k rqd5ga k rq8gb k rq5gb k 170
- Applicable to rqd8gb k rqd5gb k 170
- Dimension of hydro box 170
- Floor standing wall mounting and ceiling mounting are permissible for wall mounting take care that the motor of water pump shall not be upright correct wall mounted installation 170
- Installation method and dimension of hydro box 170
- Installation of hydro box 170
- Connecting pipe between outdoor unit and hydro box 174
- Connection requirements of hydro box and water tank 174
- Cautions of installation 175
- Fix with bolts 175
- For replenishing to water tank supply of hot water and drainage of water tank the faucet water pipe hot water connector and ground drain shall be available close to the thermal insulation water tank 4 connection of inlet outlet pipe the included safety check valve take care that the direction shall point toward the thermal insulation tank shall be connected to the inlet of water tank by using ppr pipe and be sealed with adhesive tape as shown below another end of the check valve shall be connected to the faucet water the hot water pipe shall be connected to the outlet of 175
- Installation cautions 175
- Installation of water tank 175
- Selection of installation position of water tank 175
- The base must be installed on ground suspension is prohibited 175
- The thermal insulation water tank shall be installed within a horizontal distance of 5m and a vertical fall of 3m to the water heater it may be installed outdoors e g balcony roof or ground according to the position of water heater it may also be installed indoor 2 the vertical thermal insulation water tank must be placed upright with the bottom on ground the installing position must be firm and solid to avoid shaking the water tank must be fixed onto the wall with bolts see below for details the weight bearing capacity of the installing position must be considered when installing the water tank 175
- Water tank 175
- Allowable length and height differences of the refrigerant piping between the indoor and outdoor units 176
- Equivalent length is based on one y type manifold pipe per 0 m 176
- Equivalent length of the farthest fitting pipe l 176
- Hydro unit 176
- In which l refers to pipe length unit mm and r refers to the inner radius of the pipe unit cm thermal insulation shall be done and metal pipe shall not be used for the first time of use make sure that the water tank is filled with water before connecting to the power the water tank shall not run without water 176
- Installation requirements of refrigerant piping 176
- Note to ensure safety during use of water the inlet and outlet of water tank must be connected with a specific length of ppr pipe the length l is calculated as below l 70 176
- Outdoor unit 176
- Specification 176
- Water tank 176
- Water tank by using ppr pipe 176
- Flow chart of installation 179
- Installation of refrigerant piping 179
- ③ the diameter of the piping from the branch joint branch pipe to the indoor unit 179
- 5 10 times hour under a temperature difference of 80 this extension may reach 13 4mm 180
- Advance installation of metal embedded parts 180
- Bolts may be used 180
- Correct 180
- Fixing of horizontal pipe 180
- For every 10m to prevent failure the pipes must be reinforced as follows 180
- In case that the metal embedded parts cannot be used due to design change the expansion 180
- Installation of carriage of refrigerant piping 180
- Installation of metal embedded pipe 180
- Note if the gas pipe and liquid pipe are suspended together the size of liquid pipe shall 180
- Outer diameter of pipe mm 6 5 8 2 180
- Please do not work on the top of ladder 180
- Please select according to local codes 180
- Plot the line on ground if possible and use laser to project it onto the roof this is quick and plot the line on ground if possible and use laser to project it onto the roof this is quick and 180
- Prevail 180
- Spacing between supports 180
- Subsequent installation of expansion bolts 180
- The foot pedal must be fixed securely to the ladder 180
- The foot pedal shall be supported on three points if exceeding 2m 180
- The refrigerant pipe will extend and shrink with each start or stop of the air conditioner unit 180
- Three principles of refrigerant piping installation 180
- Work order 180
- A a schematics b b schematics 185
- If the mounting clearance is too large the diameter of coarse pipe may be reduced to an appropriate value to according to applicable specifications 3 installation of branch pipe the branch pipe plays the function to divert the refrigerant flow therefore the selection and installation of branch pipe is very important to the operation of multi unit based on correct selection of branch pipe the branch pipe must be installed according to installation specifications connection schematics for y type branch pipe the connection of y type branch pipe is as shown below the inlet is connected to outdoor unit or previous branch the outlet is connected to indoor unit or next branch 185
- Installation specifications for branch pipe placement of branch pipe the branch pipe can only placed horizontally meanwhile two branch pipes must be on the same plane the spacing between two branch pipes must be over 800mm the spacing between two bends must be over 800mm and the spacing between branch pipe and bend point must also be over 800mm 185
- See below for the welding size of copper pipe 185
- Connection of branch pipe the y type branch pipe is installed with additional tube the purpose is to adjust the different pipe diameters if the pipe size selected on site is different from the size of branch connector please use the pipe cutter to cut from the middle of different connection pipes and remove the burrs then insert the copper pipe to appropriate depth the branch pipes from gree are all provided with positioning mark 186
- Copper pipe shall not be inserted too much for connection with branch pipe copper pipe shall not be inserted too much for connection with branch pipe 186
- The connection method that copper pipe is in couple with a smaller branch pipe shall not be used the connection method that copper pipe is in couple with a smaller branch pipe shall not be used 186
- A cleaning of portions for braze welding a cleaning of portions for braze welding polishing removing metal materials at connection portion removing oxidation film using non woven fabric abrasive cloth or abrasive paper ungrease if any oil stain is existent acetone or spirit solvent shall be used for ungrease treatment at the same time compressed air at 0 mpa gauge pressure shall be used for cleaning the cleaning shall be repeated not less than 3 times until there is no dirt discharged b check whether clearance between pipe and connector is proper put the connector into the pipe and face downward if the connector does not fall down depending on friction force the clearance is considered proper c nitrogen filled protection since vigorous oxidation would occur on the surface of copper pipe at braze welding temperature to effectively restrain the generation of oxide coating in copper pipe nitrogen filled protection for copper pipe is necessary after copper pipes are assembled nitrogen shal 188
- I to avoid the position difficult to weld you may add a prefabricated assembly below 188
- Operation order basic procedures for welding 188
- And charge gas state refrigerant into the gas pipe until required charging amount is reached c observe electronic balance or spring balance when required amount is reached the valve shall be closed very quickly and then source valve on the refrigerant valve shall be shut off d the amount of charging refrigerant shall be recorded refrigerant charge shall be recorded as per the following table 196
- And discharge air in the hose the high pressure end of pressure gauge is connected to the refrigerant filling nozzle on the small valve of outdoor unit open 196
- Full load cooling mode open 196
- Arrow downward 197
- Arrow upwar 197
- Installation of condensate pipe 198
- Warning 198
- Confluence toward the horizontal pipe shall be best from the upper back flow is easy to occur if from the lengthwise direction 199
- Do not tie the condensate pipe and refrigerant pipe together 8 to ensure smooth drainage of condensate a vent hole shall be set at the highest point of drainage pipe 9 carry out water flow test and full water test after the pipe connection is completed on one hand check if the drainage is smooth on another hand check the piping system for any leakage 199
- Each standpipe shall have two hanger frames at least 4 the gradient of condensate pipe shall be over 1 and the gradient of main pipe shall not be less than 0 while there shall be no overhanging slope 199
- Gradient smooth and straight avoid intersecting with other pipelines the height of the clamp fixing the pipe hanger frame shall be adjustable and fixed from the outer of thermal insulation 3 distance between hanger frames 199
- When connecting the 3 way section of condensate pipe the 2 way straight section on 5 when connecting the 3 way section of condensate pipe the 2 way straight section on 3 way pipe shall be on the same gradient the two ends of 2 way section shall not have different gradient see the schematics below 199
- 错误的接法 正确的接法 199
- Hydro box 208
- Installation of water pipeline 208
- Pipeline between hydro box and water tank 208
- Connecting pipe between outdoor unit and hydro box 209
- Connection requirements of hydro box and water tank 209
- Installation requirements of water pipeline 209
- Electrical installation 210
- Connection diagram rqd5ga rqd8ga 211
- Specifications of power cord circuit breaker 211
- Wiring sketch map 211
- Address code about capacity on the mainboard of indoor unit two 4 bit dip switches are used to distribute the address and capacity of indoor units the 4 bit dip switch marked with capacity below used for setting the capacity of indoor units is factory set before shipment of indoor unit while it is covered by sealant so that it cannot be changed by the user below is factory default setting 214
- Dial up value the dial up value of address code is set in binary system the dial up value is 0 when the lever is dialed to on end the dial up is 1 when the lever is dialed to numerical end on opposite side for number 4 1 on the address code the dial up 4 refers to high bit and the dial up 1 refers to low bit 214
- Example 1 if the dial value is 0111 this represents that the address is 8 the pins 1 2 3 of the dial switch are dialed to the numerical end and the pin 4 is dialed to on example 2 if the dial value is 1010 this represents that the address is 11 the pins 2 4 of the dial switch are dialed to the numerical end and the pin 1 3 are dialed to on see below 214
- The default capacity dial up is the maximum capacity of indoor unit as shown above the capacity is see above for the lever position dial up value the dial up value of capacity code is set in binary system the dial up value is 0 when the lever is dialed to on end the dial up is 1 when the lever is dialed to numerical end on opposite side for number 4 1 on the capacity code the dial up 4 refers to high bit and the dial up 1 refers to low bit 214
- Functional description of function dial up dial up switch 1 s r setting of memory mode including the standby mode and restoration mode the standby mode refers to that the previous parameters will be kept but the unit will not run automatically after the power supply is resumed this setting is factory defaulted dial up switch pulled to on position for example if the parameters of an indoor unit set before power shutdown are high fan and 24 the unit will be under standby state after the power supply is resumed and after the unit is manually started the parameters will remain as high fan and 24 the restoration mode refers to that not only the previous parameters will be kept but also that the unit can start automatically after the power supply is resumed but if the unit is under stop state before power shutdown it will be also under stop state after the power supply is resumed dial up switch 2 l i setting of control mode including wired control and remote control the wired control mode re 215
- Functional dial switch s7 215
- The setting of capacity of outdoor unit is determined by the cap jumper of outdoor unit different cap jumpers represent different capacities of water tank as shown in the table below 217
- Debugging of the unit 218
- Preparation for the debugging 218
- Debugging of cooling mode 219
- Debugging of heating mode 219
- Debugging of water heating 220
- Cleanout of the water system 222
- Daily maintenance 222
- Maintenance 222
- Purpose 222
- Routine work 222
- The cleanout of finned heat exchanger 222
- Anti freezing project in winter 224
- Cautions of outdoor unit 224
- Cautions of water system 224
- Drain screw cap 225
- Tube in tub 225
- Servicing 226
- List of error display on wired controller 227
- List of unit errors 227
- Servicing 227
- Display code on digital tube of outdoor mainboard 230
- Display of the number of indoor units 230
- Flow chart of troubleshooting 231
- High pressure protection 231
- Low pressure protection 232
- Change corresponding electronic expansion valve sub assy 233
- Change the mainboard chip of the outdoor units 233
- Change the outdoor unit mainboard 233
- Dc inverter vrf plus water heater solution service manual servicing 233
- Exhaust temperature protection 233
- Notes 1 the ac frequency conversion machine includes air out senor and shell top sensor 2 the temperature protection point in different machines are different 3 there is no liquid refrigerant by pass in frequency conversion machine 233
- Refer to the dial up of indoor and outdoor unit 233
- Repair the leakage of system pipe and add refrigerant according to the required volume 233
- Replace the corresponding exhaust temperature sensor 233
- Replace the liquid bypass sub assembly 233
- Replace the mainboard of outdoor unit 233
- Xhaust temperature protection 233
- Compressor overcurrent protection 234
- Dc inverter vrf plus water heater solution service manual servicing 234
- Upon ac inverter startup overcurrent the indicator will display the current protection 234
- Dc inverter vrf plus water heater solution service manual servicing 235
- Overcurrent occurs in operation i e the indicator will display the current protection just after startup 235
- Communication error 236
- Dc inverter vrf plus water heater solution service manual servicing 237
- Error with room sensor tube inlet tube middle and tube exit sensor error with room sensor 2 error with room sensor tube inlet tube middle and tube exit sensor error with room sensor tube inlet tube middle and tube exit sensor and exhaust casing top sensor error with the compressor bottom sensor 237
- Water full protection 237
- Dc inverter vrf plus water heater solution service manual servicing 238
- No energization to the unit and mainboard 238
- 将空气开关打为 on 238
- 更换主板 238
- 更换滤波板 238
- 机组内接线板 l n 是否 为 220v 238
- 机组及主板不得电 238
- 检查接线板电源是否故障 238
- 检查机组内空气开关 是否打开 238
- 滤波板输入是否有电 238
- 滤波板输出是否有电 238
- 空气开关损坏或松脱 238
- Dc inverter vrf plus water heater solution service manual servicing 239
- Mainboard nixietube 239
- Monitor display 239
- Pfc protection 239
- Dc inverter vrf plus water heater solution service manual servicing 240
- Mainboard nixietube 240
- Monitor display 240
- Protection 240
- Dc inverter vrf plus water heater solution service manual servicing 241
- Tripping 241
- Dc inverter vrf plus water heater solution service manual servicing 242
- Mainboard nixietube 242
- Radiator overheat protection 242
- Dc inverter vrf plus water heater solution service manual servicing 243
- Mainboard nixietube 243
- Overvoltage protection of dc voltage 243
- Circuit diagram 244
- Introduction of major electrical elements 244
- Wiring diadram 245
- Gmv r22td na k gmvl r22td na k gmv r28td na k gmvl r28td na k gmv r36td na k 252
- Gmvl r36td na k 252
- Gmv r50g nab k gmv r56g nab k gmvl r50g nab k gmvl r56g nab k 253
- Rqd5ga k rqd8ga k 255
- Rq30la k rq20la k 257
- Rqd30la m rqd20la m 257
- Disassembly and assembly procedure of main parts 258
- Gmv pds100w na k gmv pds120w na k gmv pds140w na k gmv pds160w na k rqd5ga 258
- Introduction of main parts 258
- K rqd8ga k 258
- Hydro box 259
- Gmv pds224w na m gmv pds280w na m rqd20la m rqd30la m rq20la k rq30la k 260
- 改变制冷剂流向 实现制冷制热之间的 转换 260
- Gmv pds100w na k gmv pds120w na k gmv pds140w na k gmv pds160w na k 262
- Outdoor unit 262
- Electrical parts box 279
- An blades 291
- Motor motor support 291
- Exploded views and part list 292
- Outdoor unit 292
- Hydro unit 298
- Indoor unit_exploded view and parts list 5 duct type unit 308
- Code qty 315
- Base plate 337
- Body fixed plate 337
- Bottom foam 337
- Cable cross loop 337
- Capacitor 337
- Centrifugal fan 337
- Drainage pipe pump 337
- Electric box 337
- Electric box base plate 337
- Electronic expansile valve vpf 25d18 337
- Evaporator 337
- Evaporator connection 337
- Evaporator support 337
- Fan fixer 337
- Flow guide loop 337
- Front side plate 337
- Gas collector 337
- Left side plate 337
- Main pcb 337
- Motor fixer 337
- Motor fn60t 1 337
- Motor gasket 337
- Nut with washer m6 337
- One way valve 337
- Pipe pump pjv 1415 337
- Pump gasket 337
- Pump support 337
- Rear side plate 337
- Right side plate 337
- Terminal board 337
- Transformer 337
- Tube exit plate 337
- Water level switch 337
- Water tray 337
- Wire clamp 337
- Signal cable 400103953 353
- 5 gmv l r22g nac k gmv l r28g nac k 354
- Code qty 355
- No part name gmv l r22g nac k gmv l r28g nac k 355
- 6 gmv l r36g nac k gmv l r45g nac k 356
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