Westinghouse WHZ09WMA21S Service Manual page 24

33
34
★
36
★
38
39
★ ★
41
2.2 LED display
Sleep Timer Running
Error
code
1 2
★
x x
★
x x
★
★ ★
★ ★
x
★
Remark：★Light
Content
3
The failure for
temperature
sensor of
indoor room
The failure for
temperature
sensor of
indoor coil
temperature
Communication
failure between
the indoor unit
and outdoor
unit
Indoor
EEPROM
failure
Indoor fan
motor run
abnormally
The failure for
Indoor
grounding
protective
Flash
Remark
- 23 -
a. The indoor room temperature
sensor loose;
b. The indoor room temperature
sensor is failure;
c. The indoor control board is
failure.
a. The indoor coil temperature
sensor loose;
b. The indoor coil temperature
sensor is failure;
c. The indoor control board is
failure.
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 EEPROM chip loose;
b. The indoor control board is
failure
a. There are something block
the indoor fan motor;
b. The fan motor cord connect
loose;
c. The fan motor is failure;
d. The indoor control board is
failure
The indoor control board is
failure
x OFF
The root cause is may be one of
the following