Hisense GBF18H-S User Manual page 98

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
6 Motor blockage protection
The communication fault
7 between the indoor unit and
outdoor unit
8 Phase current imbalance
9 U phase current fault
10 V phase current 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.Outdoor ambient temperature sensor fault；
2. Outdoor coil temperature sensor fault；
3.Outdoor control board fault.
1.The connection cable connect wrong
between the indoor unit and outdoor unit;
2.The communication cable connect loose;
3.The communication cable is fault;
4.The indoor control board is fault;
5.The outdoor control board is
fault;
6.Communication circuit fuse open;
7.The specification of communication cable is
incorrect.
1.The supply voltage fluctuates more than
4%;
2.The compressor power cord connect loose;
3.The AC contactor is fault;
4.The compressor motor fault.
1.Compressor U phase power cord is fault or
connect wrong;
2.Outdoor control board is fault;
3.The Compressor is fault
1.Compressor V phase power cord is fault or
connect wrong;
2.The outdoor control board is fault;
3.The compressor is fault
How to Deal With
1.Replace outdoor ambient
temperature sensor；
2.Replace outdoor coil temperature
sensor；
3.Replace Outdoor control board.
1.Reconnect the connection cable refer
to the wiring diagram;
2.Reconnect the communication cable;
3.Replace the communication cable;
4.Replace the indoor control board;
5.Replace the outdoor control board;
6.Check the communication circuit,
adjust the DIP switch and the
short-circuit fuse.
7.Choose suitable communication
cable refer to the user manual
1.Normally protection;
2.Reconnect the wire refer to thewiring
diagram;
3.Replace the AC contactor;
4.Replace the compressor.
1.Replace the U phase power cord or
reconnect the U phase power cord
refer to the wiring diagram;
2.Replace the outdoor control board;
3.Replace the compressor.
1.Replace the V phase power cord or
reconnect the V phase power cord refer
to the wiring diagram;
2.Replace the outdoor control board;
3.Replace the compressor.
REMARKS
Applied to
ON/OFF
air-condition
ers with 2
control
boards
Application
of
three-phase
power
supply
models
Application
of
three-phase
power
supply
models
Application
of
three-phase
power
supply
models
96