Panasonic WH-SHF09D3E5, Service Manual

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12.2 Water Pump
12.2.1 Water Pump Control
1 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, the
compressor should be OFF immediately and restart delay after 3 minutes.
2 The system will start checking on the water flow level after operation start for 9 minutes. If water flow level is
detected low continuously for 10 secs, the water pump and compressor will be OFF permanently and
OFF/ON control panel LED will blink (H62 error occurs).
3 When error happen, the power has to be reset to clear the error.
4 If there is no error indication, The water pump shall be continuously running.
5 The water pump will remain ON when compressor OFF due to thermostat OFF setting is reached.
6 Pump ON-OFF control
a. During operation OFF or water pump stop at Tank Mode
b. During ERROR stop
c. Water flowing flag = ON
d. Outdoor air temperature < 30°C
When above [(a) or (b)] and (c) and (d) conditions fulfilled,
PUMP ON for 4 minutes, and OFF for 55 minutes continuously
When any of below mentioned condition below is achieved, this control is cancelled
f. Operation = ON (except during water pump stop at tank mode)
g. Water pump run at tank mode
h. Change from tank mode to another mode during water pump stop at tank mode
i.
Outdoor air temperature ≥ 32°C
j. Water inlet temperature < 38°C for 30 minutes continuously