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Fault Codes
Code
RT=Room Temperature
NOTE: Always remove power from unit to reboot and see if fault clears before attempting to troubleshoot or repair.
F3
F5
F6
F7
F9
FA
Fb
FC
FE
FF
FH
FP
FU
Fj
Fn
bf
bc
bj
Note: Remote control FAILURE CODE check function
For codes (Fb~bj) the remote control is required to check the fault codes. While unit is runing, press the ECO button 8 times within 8
seconds. You will hear 2 audible beeps.
24
TROUBLESHOOTING
Reason
Outdoor coil temperature failure PROTECTION.. 1.
PFC PROTECTION
The Compressor lack of phase / Anti-phase
PROTECTION.
IPM Module temperature PROTECTION
The module temperature test circuit failure.
The compressor Phase-current test circuit
failure.
Limiting/Reducing frequency for Over load
protection on Cooling/Heating mode.
Limiting/Reducing frequency for High power
consumption protection.
Limiting/Reducing frequency for Module
current protection ( phase current of
compressor).
Limiting/Reducing frequency for Module
temperature protection.
Limiting/Reducing frequency for Compressor
driving protection.
Limiting/Reducing frequency for anti-
condensation protection..
Limiting/Reducing frequency for anti-frost
protection.
Limiting/Reducing frequency for Discharge
over temperature protection.
Limiting/Reducing frequency for ODU AC
Current protection."
TVOC sensor failure (IDU failure, optional)
PM2.5 sensor failure (IDU failure, optional)
Humidity sensor failure. (IDU failure)
Figure 401
Remark
Check Outdoor Pipe temp sensor.
2.
Replace Main PCB.
Follow troubleshooting flow chart.
Follow troubleshooting flow chart.
Follow troubleshooting flow chart.
Replace Main PCB.
Replace Main
PCB.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
Check wih remote Control function.
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