Panasonic AQUAREA WH-ADC0912K6E5AN Service Manual page 138

Water Outlet Thermo Condition

Heat pump thermos OFF temperature:
1 Heat pump thermo OFF temperature = Target Water outlet temperature + (1°C)
2 Water outlet temperature > heat pump thermo OFF temperature for continuously 3 minutes, heat pump OFF
but water pump continue ON.

Heat pump thermo ON temperature
1 Heat pump thermo ON temperature = water inlet during thermo OFF time + [-3°C]
2 When water outlet temperature < heat pump thermo ON temperature, heat pump ON.
Water inlet thermo protection condition

Heat pump thermo OFF temperature:
1 Water inlet temperature > [60°C/55°C] for continuously 30 seconds, heat pump OFF, water pump continue
ON.

Heat pump thermo ON temperature:
1 Heat pump thermos ON temp = water inlet temperature < [60°C/55°C].
Outdoor ambient temperature
Thermo ON/OFF for Heat Pump in Tank Operation:
When tank temperature achieve heat pump OFF condition, refer below condition:
Conditon 1 : Tank Heater ON (Internal Tank Heater)

Heat pump will turn OFF, water pump continue ON and room heater will continue ON if tank temperature below
tank heater thermo ON condition. 3 ways valve will only switch to room side after tank temperature reach tank
heater thermo OFF condition.
Conditon 2 : Tank Heater OFF (Internal Tank Heater)

If tank temperature achieve tank thermo OFF, heat pump turn OFF, water pump turn OFF, room heater OFF and
3 ways valve switch to room side.
When tank temperature achieve heat pump ON condition, water pump ON, heat pump ON and room heater turn OFF.
Heat pump OFF condition at Tank Mode
Tank temperature > tank water set temperature continuously for 20 seconds after heat pump thermos OFF
o
due to water thermo. (Heat pump turn OFF but water pump continue ON and room heater turn ON to achieve
tank set temperature) OR
Tank temperature > tank set temperature + [1°C] for continuously 20 seconds. (Heat pump OFF, water pump
o
OFF, room heater OFF and 3 ways valve switch to room side)
Heat pump ON condition at Tank Mode
Tank temperature < tank water set temperature + R/C setting (Tank re-heat temp) (Water pump turn ON OR
o
continue ON, heat pump ON and 3 ways valve switch to tank side or maintain at tank side)
Tank heater control

Internal heater only operates to tank side if Tank heater ON and backup heater is enable.
Internal heater turn ON condition:

Tank temperature < tank set temperature AND

Heat pump thermos OFF AND

20 minutes from previous heater off AND

Internal tank heater selects USE from control panel.
Internal heater turn OFF condition:

Tank temperature > tank set temperature for continuously 15 seconds OR

Heat pump thermo ON OR

Mode change or operation is off by control panel.
< -10°C
> -10°C
Water inlet temperature
55°C
60°C
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