Westinghouse WHP09WMA21S Service Manual page 27

17
18
19
★
20
21
22
24
26
27
PFC protection
DC compressor
start failure
Compressor
drive in trouble
Outdoor fan
motor locked
rotor protection
Outdoor coil
anti-overload
protection with
cooling
Compressor
pre heating
process
Chip in outdoor
board in trouble
Overheated
outdoor radiator
Protection
against too high
system
pressure
- 26 -
d. the refrigerant system is
abnormal.
a. the PFC is failure;
b. the outdoor drive board is
failure
a. the outdoor drive board is
failure;
b. the compressor is failure
a. the outdoor drive board is
failure;
b. the compressor is failure
c. the outdoor control board is
failure
a. the connection of the outdoor
fan motor is loose;
b. there are something block the
outdoor fan;
c. the fan motor is failure;
d. the outdoor control board is
failure
a. the refrigerant is too much;
b. the outdoor fan motor is
failure;
c. the outdoor fan is broken;
d. the condenser is dirty;
e. the air inlet and air outlet of
the indoor unit and the outdoor
unit is not normally
it is normal mode in cold
weather
a. Using the wrong drive board;
b. Using the wrong compressor.
a. Radiator sensor fails
b. Detection circuit of the
sensor on the control panel
fails
a. The pressure switch
fails
b. The pressure detection
switch on the control panel
fails
c. The measured value of
system pressure exceeds
the limit