Panasonic WH-SDC09C3E8 Service Manual page 63

When solar priority is NOT SET
1 Operation condition:
Solar pump operates if all of the following conditions are fulfilled:
o
Power On. (regardless operation ON or OFF)
i)
There is operation request from solar pump station.
ii)
Tank hot water temp is below solar on upper limit temp [EEPROM 1 : 70]°C.
iii)
Heatpump thermo OFF in tank mode OR Heatpump operate to room side.
iv)
(during operation ON and tank mode selected)
2 Stop condition:
Solar pump stops operating when:
o
No power supply to unit OR
i)
There is NO operation request from solar pump station OR
ii)
Tank hot water temp is above solar off upper limit temp [EEPROM 2 : 77]°C.
iii)
Heatpump thermo ON and operate to tank side.
iv)
(during operation ON and tank mode selected)
Heat + Tank Mode (Heating Priority Not Set)
(Solar Priority Set)
63