Hisense GBF18H-S User Manual page 102

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
42 the voltage sensor fault
43 High Pressure sensor fault
44 Low Pressure sensor fault
45 IPM fault
IPM and control board
46
communication fault
IPM and control board
46-1
communication 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
valve blockage
7.The outdoor control board is fault;
1.The wiring of the voltage sensor connect
wrong or loose;
2. The voltage sensor is failure;
3. The sampling circuit of the
voltage sensor is failure.
1.The wiring of the high-pressure pressure
sensor connect loose;
2.The high-pressure pressure sensor is
failure
3.The sampling circuit of the high-pressure
pressure sensor is failure
1.The wiring of the low-pressure pressure
sensor connect loose;
2.The low-pressure pressure sensor is failure
3.The sampling circuit of the low-pressure
pressure sensor is failure.
There are many reasons for this failure, If you
need further analysis, fault code of the driver
board is needed by watching the driver board
fault led. Analysis can be further to know why
and how to operate. Specific see table 5,
table 6.
1.The cable between the control board and
the driver board connect loose;
2.The cable between the control board and
the driver board is failure;
3.The driver board is failure
4.The control board is failure
1.The cable between the control board and
the driver board connect loose;
2.The cable between the control board and
the driver board is failure;
3.The driver board is failure
4.The control board is failure
How to Deal With
7.Replace outdoor control board.
1. Reconnect the wiring of the current
sensor;
2. Replace the voltage sensor;
3. Replace the outdoor control board.
1.Reconnect the wiring of the
high-pressure pressure sensor;
2.Replace the high-pressure pressure
sensor;
3.Replace the outdoor control board.
1.Reconnect the wiring of the
low-pressure pressure sensor;
2.Replace the low-pressure pressure
sensor;
3.Replace the outdoor control board.
See attached "analysis of the driving
board fault".
1.Reconnect the cable between the
control board and the driver board;
2.Replace the communication cable
between the control board and the
driver board;
3.Replace the driver board;
4.Replace the control board.
1.Reconnect the cable between the
control board and the driver board;
2.Replace the communication cable
between the control board and the
driver board;
3.Replace the driver board;
REMARKS
VRF
Applied for
INVERTER
type
Applied for
Inverter
Unitary
type&Free-
Match
Applied for
VRF
100