Hisense GBF18H-S User Manual page 116

7 . T R O U B L E S H
7 . T R O U B L E S H
Fault
Fault Description
code
PFC over
15 current(single-phase
air-conditioner)
Phase imbalance or
phase lacks or the
instantaneous power
16
failure (only for 3-phase
power supply air
conditioners)
The instantaneous power
17
failure detection
18 Low DC voltage 200V
Ii： Driver board fault codes trouble shooting
2-seconds long LED flash on/off in means number 5，1 -second short LED flash on/off means number 1.
1 time flash
LED ON
LED OFF
1.0sec 1.0sec
For example，fault code 4： Indicator light flash 4 times1-second short LED on/off Intervals for a period of
time again, reports No. 4 fault.
LED ON
LED OFF
For example，fault code 11： Indicator light flash 2 times 2-seconds long LED on/off and 1 time 1-second
long LED on/off Intervals for a period of time again, reports No. 11 fault.
LED ON
LED OFF
Fault
Fault Description
code
1 Inverter DC voltage overload fault
2 Inverter DC low voltage fault
3 Inverter AC current overload fault
4 Out-of-step detection
ON/OFF UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V6.0
O O T I N G
O O T I N G
Possible Reason of Abnormality
1,System overload, current too large;
2,Driver board fault;
3,PFC fault..
1,3-Phase voltage imbalance;
2,The 3-phase power supply phase lost;
3,Power supply wiring wrong;
4,Driver board fault.
1,The power supply is not stable ;
2.The instantaneous power failure ;
3,Driver board fault;
1,Voltage input too low ;
2,Driver board fault.
（ ONLY FOR 20K&16K DUAL TYPES
1 time flash
LED ON
LED OFF
0.5sec 0.5sec
Sheet 6 Driver Error Code
------Only for 20K&16 Dual types
Possible Reason of
Abnormality
1、 Power supply input too high
or too low;
2、
1、Compressor phase lost；
How to Deal With
1,Check the system;
2,Change the driver board;
3,Change PFC.
1,Check the power supply;
2,Check the power supply;
3,Check the power supply wiring connect;
4,Change the driver board.
1,Check the power supply.
2,Not fault.
3,Change the driver board;
1,Check the power supply.
2,Change the driver board.
3.0sec
3.0sec
Driver board fault.
） ,details see sheet6.
How to Deal With
1,Check power supply
2,Change driver board.
1,Check compressor wire
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