Panasonic WH-ADC0916G9E8, Service Manual, Page: 73 / 205

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3. Backup Heater Control:
o
During Cooling interval

Backup Heater will not operate during Cool Mode.
o
During tank heat-up interval
Backup Heater Turn ON condition:

Tank Temperature < Tank Set Tempe [0°C] AND

Heat Pump Thermo OFF AND

20 minutes from previous heater OFF. AND

Remote controller Select USE for Backup Heater for Tank.
Back up Heater Turn OFF condition:

Tank Temperature > Tank Set Tempe [0°C] for continuously 15 seconds OR

Heat Pump Thermo ON OR

Mode Change or Operation OFF by remote controller
* Turn ON all heater element according to the maximum heater selection when heater is request to ON
by remote controller.
4. 2-way vale control:
o
2-ways valve opens.
Cool + Tank mode
3 way valve
on
off
Heat Pump
on
off
Water Pump
on
off
Backup Heater
Tank Temp.
Water Temp.
on
off
51°C 51°C
65°C
48°C
58°C
58°C
65°C
65°C