Panasonic WH-MDC09C3E8 Service Manual

Also see for WH-MDC09C3E8: Design handbook Installation manual Installation manual Operating instructions Operating instructions

Contents

Panasonic WH-MDC09C3E8 Service Manual Manual pdf 62 page image

6212.2 Water Pump Once the indoor unit is ON, the water pump will be ON immediately and no error judgement for 9 minutes.However, during this 9 minutes operation, if there is any abnormality cause at outdoor or malfunction, thecompressor should be OFF immediately and restart delay after 3 minutes. The system will start checking on the water flow level after operation start for 9 minutes. If water flow level isdetected low continuously for 10 secs, the water pump and compressor will be OFF permanently and OFF/ONremote control LED will blink (H62 error occurs). When error happen, the power has to be reset to clear the error. If there is no error indication, the water pump shall be continuously running. The water pump will remain ON when compressor OFF due to thermostat OFF setting is reached.12.2.1 Water Pump Only Operation Water pump only circulation can be set from the control panel SERVICE S/W when the operation is in StandbyMode. Press the SERVICE S/W for continuous 5 sec to enter Service Mode. In Service Mode, select Sr:02 and press SET S/W to start water pump only operation. Water pump will stop operation when H62 is triggered. Press the OFF/ON button to stop the water pump only operation.12.3 Pump Down OperationPurposeEnsure the pump down operation when relocating or disposing of the unit. The pump down operation will extract allrefrigerant from the piping into the mono bloc unit. Pump down operation control:1 Press the SERVICE S/W for continuous 5 secs to enter Service mode.2 In service mode, select Sr:01 and press SET S/W to start Pump Down operation.3 There will be no Low Pressure error & Freeze prevention judgement during pumpdown operation.4 3 ways valve will shift to room side.5 Press the ON/OFF button to stop the unit.