Table Of Contents; The Indoor Control Board Is Failure - Westinghouse WHZ09WMA21S Service Manual

0
★
1
★
2
★
5
x
6
★ ★
7
8
Normal
The failure for
temperature
★
sensor of
outdoor coil
Compressor
exhaust
x temperature
sensor in
trouble
IPM module
x
protection
AC voltage
x
higher or lower
protection
Communication
failure between
x the indoor unit
and outdoor
unit
Current
overload
protection
- 24 -
a. The outdoor temperature sensor
loose;
b. The outdoor temperature sensor
is failure;
c. The indoor control board is
failure
a. The compressor exhaust
temperature sensor connect loose;
b. The compressor exhaust
temperature sensor is failure;
c. The outdoor control board is
failure
a. The IPM board is failure;
b. The outdoor fan is broken;
c. The outdoor fan motor is failure;
d. The outdoor fan has been
blocked ;
e. The condenser is dirty;
f. The outdoor unit has been
installed without standard.
a. The supply voltage is higher or
lower than normal;
b. The inner supply voltage of the
unit is higher or lower than normal
a. The communication cable
connect loose;
b. The communication cable is
failure;
c. The connection between the filter
board and the outdoor control
board is incorrect or loose;
d. The connection between the filter
board and the terminal is incorrect
or loose;
e. The indoor control board is
failure;
f. The PFC board is failure;
g. The power board is failure;
h. The outdoor control board is
failure.
a. The fan motor run abnormally;
b. The condenser and evaporator is
dirty;
c. The air inlet and outlet is
abnormally