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Shinco Service Manual
- 57 -
KFR-50GWZ/BM、KFR-70GWZ/BM
Item FAULT CODE CHECK POINT COUNT MEASURE
1
INDOOR AIR SENSOR IS FAULTY
E1
2
INDOOR PIPE SENSOR IS FAULTY
E2
1、CHECK THE SENSOR VALUE
2、INDOOR BOARD IS FAULT
CHANGE SENDOR
CHANGE INDOOR BOARD
3
INDOOR IN-PHASE MOTOR IS FAULT
E3
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4
COMMUNICATION FAULT BETWEEN
INDOOR UNIT AND OUTDOOR UNIT
E4
1、CHECK IF THE CONNECTING WIRING IS CONNECT WELL
2、TEST THE VOLTAGE VALUE BETWEEN L4 AND S, IF IT ‘S
CHANGE REGULARLY，THE SINGAL TRANSFERING BETWEEN
INDOOR AND OUTDOOR UNIT IS GOOD，
WHEN IT’S NO CHANGE
IF VALUE IS BELOW 14V， THE INDOOR PCB BOARD IS FAULT，
CHANGE IT.
IF VALUE IS OVER 14V,THE OUTDOOR PCB IS FAULTY
3、CHECK IF THERE IS LED FLASHING ON THE OUTDOOR PCB
IF THERE IS NO FLASHING，CHECK VOLTAGE VALUE FROM
POWER BOARD TO PFC BOARD, BETWEEN ACL AND CAN ON PFC
BOARD
IF IT’S NOT 220V, CHANGE POWER BOARD
IF IT’S 220V,CHANGE PFC BOARD
1、FIX THE WIRING AGAIN。
2、CHANGE RELATE PCB BOARD
5
DRIVER BOARD IS FAULT ）
E5
DRIVER BOARD IS FAULT DRIVER BOARD IS FAULT
6 OUTDOOR SENSOR IS FAULT E6
1、CHECK THE SENDOR VALUE
2、POWER BOARD IS FAULT
CHANGE SENSOR
CHANGE POWER BAORD。
7 INDOOR MOTOR FAULTY E7
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8 COMMUNICATION SIGNAL IS
NOT GOOD
E8
CHECK IF THE COMMUNICATION WIRING IS CONNECTED WELL.
CHECK IF POWER BOARD OR DRIVER BOARD IS FAULT
FIX THE COMMUNICATION WELL
CHANGE THE PCB BOARD