Panasonic CU-4E23JBE Service Manual

Also see for CU-3E18JBE: Operating instructions Operating instructions Operating instructions Operating instructions Operating instructions

Panasonic CU-4E23JBE Service Manual Manual pdf 40 page image

4014 Servicing Mode14.1. CU-3E18JBE & CU-4E23JBE14.1.1. 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 2G).- Immediate set the gas side valve to close position and then press the PUMP DOWN button (SW1) to stop the pump downoperation.NOTE: Pump down operation will stop automatically after 15 minutes if PUMP DOWN switch (SW1) is not pressed again. Pumpdown operation is not started within 3 minutes after compressor is stopped.: Blinking14.1.2. 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 2will 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 whenshift into heating test operation.• Press the TEST OPERATION button (SW2) again to cancel test operation.LED 2 3 4 5 MessageStatusPump down operation in progress3 minutes before operation end2 minutes before operation end1 minute before operation endPump down operation end