![Panasonic CU-3E18LBE [56/103] Servicing mode](/img/pdf.png)
Panasonic CU-3E18LBE [56/103] Servicing mode
![Panasonic CU-3E18LBE [56/103] Servicing mode](/views2/1833931/page56/bg38.png)
56
16 Servicing Mode
16.1. CU-3E18LBE & CU-4E23LBE
16.1.1. Pump down operation (SW1)
• Operate the pump down process according to the following procedure
- Confirm the valve on the liquid side and gas side are open.
- Press PUMP DOWN button (SW1) on the Service PCB inside the outdoor unit for more than 5 seconds. Pump down
(cooling) operation is performed for 15 minutes.
- Set the liquid side 3 way valve to close position and wait until the pressure gauge indicates 0.01Mpa (0.1kg/cm
2
G).
- Immediate set the gas side valve to close position and then press the PUMP DOWN button (SW1) to stop the pump down
operation.
NOTE: Pump down operation will stop automatically after 15 minutes if PUMP DOWN switch (SW1) is not pressed again. Pump
down operation is not started within 3 minutes after compressor is stopped.
: Blinking
16.1.2. Test Run operation
• Test operation can be carried out using TEST OPERATION button (SW2) on the Service PCB inside the outdoor unit.
• For Cooling test, press the TEST OPERATION button (SW2) for 5 seconds or more but less than 10 seconds, LED1 and LED 2
will illuminate when shift into cooling test operation.
• For Heating test, press the TEST OPERATION button (SW2) for more than 10 seconds, LED 1 and LED 3 will illuminate when
shift into heating test operation.
• Press the TEST OPERATION button (SW2) again to cancel test operation.
LED2345Message
Status
Pump down operation in progress
3 minutes before operation end
2 minutes before operation end
1 minute before operation end
Pump down operation end
Содержание
- Air conditioner 1
- Cu 2e15lbe cu 2e18lbe cu 3e18lbe cu 4e23lbe 1
- Outdoor unit 1
- Table of contents 1
- Carry out test run to confirm that no abnormality occurs after the servicing then explain to user the operation care and maintenance as stated in instructions please remind the customer to keep the operating instructions for future reference 3
- Read the following safety precautions carefully before perform any servicing electrical work must be installed or serviced by a licensed electrician be sure to use the correct rating of the power plug and main circuit for the model installed the caution items stated here must be followed because these important contents are related to safety the meaning of each indication used is as below incorrect installation or servicing due to ignoring of the instruction will cause harm or damage and the seriousness is classified by the following indications 3
- Safety precautions 3
- The items to be followed are classified by the symbols 3
- Cu 2e15lbe 5
- Specifications 5
- Note specifications are subject to change without notice for further improvement 6
- Cu 2e18lbe 7
- Note specifications are subject to change without notice for further improvement 7
- Cu 3e18lbe 8
- Note specifications are subject to change without notice for further improvement 8
- Cu 4e23lbe 9
- Note specifications are subject to change without notice for further improvement 9
- Dimensions 17
- Check points 33
- Cu 2e15lbe 33
- Installation information 33
- The shapes of the 3 way valve caps of the outdoor unit have been changed 33
- Check points 34
- Cu 2e18lbe 34
- The shapes of the 3 way valve caps of the outdoor unit have been changed 34
- After selecting the best location start installation to indoor outdoor unit installation diagram 1 fix the unit on concrete or rigid frame firmly and horizontally by bolt nut ø10 mm 2 when installing at roof please consider strong wind and earthquake please fasten the installation stand firmly with bolt or nails 37
- Cu 2e15lbe cu 2e18lbe 37
- Disposal of outdoor unit drain water 37
- If a drain elbow is used the unit should be placed on a stand which is taller than 3 cm if the unit is used in an area where temperature falls below 0 c for 2 or 3 days in succession it is recommended not to use a drain elbow for the drain water freezes and the fan will not rotate 37
- If an awning is built over the unit to prevent direct sunlight or rain be careful that heat radiation from the condenser is not obstructed there should not be any animal or plant which could be affected by hot air discharged keep the spaces indicated by arrows from wall ceiling fence or other obstacles do not place any obstacles which may cause a short circuit of the discharged air if piping length is over the common length additional refrigerant should be added as shown in the table 37
- Install the outdoor unit 37
- Installation instruction 37
- Select the best location 37
- Connecting the piping 38
- Evacuation of the equipment for europe and oceania destination 38
- Connect the cable to the outdoor unit 39
- Pipe insulation 39
- Cu 3e18lbe cu 4e23lbe 40
- If an awning is built over the unit to prevent direct sunlight or rain be careful that heat radiation from the condenser is not obstructed there should not be any animal or plant which could be affected by hot air discharged keep the spaces indicated by arrows from wall ceiling fence or other obstacles do not place any obstacles which may cause a short circuit of the discharged air 40
- If total piping length of all indoor units exceed the equivalent length listed above additional charge with 20g of refrigerant r410a for each additional meter of piping 40
- In case of indoor is cs e21 cs xe21 then ø 12 t0 gas pipe size must be used together with cz ma2p pipe size expander 40
- Select the best location 40
- After selecting the best location start installation to indoor outdoor unit installation diagram 1 fix the unit on concrete or rigid frame firmly and horizontally by bolt nut ø10 mm 2 when installing at roof please consider strong wind and earthquake please fasten the installation stand firmly with bolt or nails 41
- Connect the piping 41
- Connecting the piping to outdoor unit decide piping length and then cut by using pipe cutter remove burrs from cut edge make flare after inserting the flare nut locate at valve onto the copper pipe align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table 41
- Install the outdoor unit 41
- Outdoor unit installation guidelines where a wall or other obstacle is in the path of outdoor unit s intake or exhaust airflow follow the installation guidelines below for any of the below installation patterns the wall height on the exhaust side should be 1200mm or less 41
- Remove the control board cover resin from the unit by loosening three screws 41
- Evacuation of the equipment 42
- Connect the cable to the outdoor unit 43
- Heat insulation 44
- Compressor operation frequency 45
- Deice operation 45
- Operation control cu 2e15lbe and cu 2e18lbe 45
- Annual cooling control 46
- Cooling operation 46
- Operation control cu 3e18lbe and cu 4e23lbe 46
- Outdoor fan control 46
- Heating operation 47
- Outdoor fan control 47
- Powerful operation 1 47
- Powerful operation 2 47
- Simultaneous operation control 48
- Compressor overheating prevention control 49
- Ipm power transistor prevention control 49
- Protection control cu 2e15lbe and cu 2e18lbe 49
- Time delay safety control 49
- Total running current control 49
- 4 way valve failure protection control 50
- Cooling overload control 50
- Low pressure prevention control gas leakage detection 50
- Protection control for cooling soft dry operation 50
- Abnormal wiring or piping connection checking control 51
- Intake air temperature control 51
- Outdoor air temperature control 51
- Overload protection control 51
- Protection control for heating operation 51
- Dew prevention control cool 52
- Electronic parts temperature rise protection 1 cool 52
- Electronic parts temperature rise protection 2 cool 52
- Freeze prevention control cool 52
- Protection control cu 3e18lbe and cu 4e23lbe 52
- Cooling overload control cool 53
- Extreme low temperature compressor low pressure protection control heat 53
- Heating overload control heat 53
- 30 seconds force operation 54
- Compressor protection control gas leak detection control 1 54
- Deice control 54
- Ipm power transistor protection control 54
- Time delay safety control restart control 54
- Total current control 54
- Compressor discharge high pressure protection control 55
- Compressor protection control gas leak detection control 2 55
- Valve close detection control 55
- Cu 3e18lbe cu 4e23lbe 56
- Pump down operation sw1 56
- Servicing mode 56
- Test run operation 56
- Cooling only function 57
- Mode priority function 57
- Power save mode 57
- Wiring error check 57
- Self diagnosis function cu 3e18lbe and cu 4e23lbe 58
- Troubleshooting guide 58
- Note frequency measured and fan speed fixed 59
- Self diagnosis function cu 2e15lbe and cu 2e18lbe 60
- The display screen of wireless remote control unit and the self diagnosis leds green on the outdoor printed circuit board in the outdoor unit can be used to identify the location of the problem refer to the table below to identify and solve the cause of the problem and then re start the air conditioner system if the problem is solved and operation returns to normal led 1 illuminates and others led are off 60
- Led 1 illuminate is indicated that outdoor unit is operating normally if the led 1 is switched off or flashing check the power supply and self diagnosis indication 62
- Disassembly and assembly instructions 63
- Outdoor unit removal procedure cu 2e15lbe cu 2e18lbe 63
- Removing the cabinet top plate and cabinet front plate 63
- Removing the control board 63
- Removing the control board cover 63
- Outdoor unit removal procedure cu 3e18lbe cu 4e23lbe 64
- Removing the cabinet top plate and cabinet front plate 64
- Removing the propeller fan and fan motor 64
- Remove the control board cover and particular plates 65
- Removing the control p c board 65
- Removing the propeller fan and fan motor 66
- Technical data 67
- Cu 2e15lbe cu 2e18lbe 99
- Exploded view and replacement parts list 99
- Note all parts are supplied from phaam malaysia vendor code 00029488 o marked parts are recommended to be kept in stock 100
- Cu 3e18lbe cu 4e23lbe 101
- Note all parts are supplied from phaam malaysia vendor code 00029488 o marked parts are recommended to be kept in stock 103
- Phaam printed in malaysia sfbz10 10 0 1 103
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