T R O U B L E S H O O T In - Hisense GBF18H-S User Manual

7 . T R O U B L E S H O
7 . T R O U B L E S H O
Faul
t
Fault Description
cod
e
11 phase wrong failure
12 voltage absent phase
Compressor overheat
13
protector device
the high pressure switch
operate or the unit turn off for
14
high pressure
protection
the low pressure switch
protection or
15 the unit turn off for low
pressure
protection
overload protection in cooling
16
mode
Discharge temperature sensor
17
fault
ON/OFF UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V6.0
O T I N G
O T I N G
Possible Reason of Abnormality
1.Three-phase power is abnormal;
2.The outdoor wiring connect wrong;
3. The outdoor control board is failure
1.Three-phase power is abnormal;
2.The outdoor wiring connect wrong;
3.The outdoor control board is failure.
1. The wiring of the overload protector
connect loose.
2. The overload protector is failure .
3. The refrigerant is not enough;
4. The installation pipe is too long than
normal, but not add the enough refrigerant;
5. The expansion valve is failure;
6. The outdoor control board is failure
1.The wiring of the high pressure protector
connect loose;
2.The high pressure protector is failure;
3.The outdoor control board is abnormal;
4. Overload in cooling;
5. Overload in heating.
1. The low pressure switch is failure;
2.The wiring of the low pressure switch
connect loose;
3.The refrigerant is not enough;
4.The expansion valve failure in heating
mode;
5.The outdoor control board is abnormal.
System overload
1.The wiring of the discharge temperature
sensor connect loose;
2.The discharge temperature sensor is
How to Deal With
1.Normally protection, please check
the supply power
2.Check the wiring connection refer to
the wiring diagram;
3.Replace the outdoor control board
1. Normally protection
2. Check the wiring connection refer to
the wiring diagram;
3. Replace the outdoor control board
1. Reconnect the wiring of the overload
protector;
2. Replace the overload protector;
3. Check the welding point of the unit to
confirm whether it is leakage, and then
recharge the refrigerant;
4. Add the refrigerant;
5. Replace expansion valve;
6. Replace the outdoor control board.
1.Reconnect the wiring the high
pressure protector;
2. Replace the high pressure protector;
3. Replace the outdoor control board;
4. Please refer to the Note 3;
5. Please refer to the Note 4.
1. Reconnect the wiring of the low
pressure switch;
2. Replace the low pressure switch;
3.Check the welding point to confirm
whether the unit is leakage, and then
add some refrigerant;
4. Replace the expansion valve;
5. Replace the outdoor control board.
Please refer to the Note 3.
1.Reconnect the wiring of thedischarge
temperature sensor;
2.Replace the discharge temperature
REMARKS
Application
of
three-phase
power
supply
models
Application
of
three-phase
power
supply
models
Applied to
models with
high
pressure
switch or
pressure
sensor
Applied to
models with
low pressure
switch or
pressure
sensor
97