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Module temperature protection
Charging malfunction of capacitor
High pressure protection of system
Overload protection of compressor
Wrong connection for communication wire or malfunction of
expansion valve (free match)
Wrong connection for communication wire or malfunction detection
status of expansion valve (free match)
Mode shock
Freon recovery mode
Defrosting and oil return under heating
Failure start-up of compressor
Discharge high-temperature protection of compressor
Overload protection
Overcurrent protection of the complete unit
Overcurrent protection of phase current
Desynchronizing of compressor
Loss phase/inverse phase protection for compressor
Module current protection (IPM protection)
Low voltage protection of DC bus bar
High voltage protection of DC bus bar
PFC protection
Limit/decrease frequency due to current protection of the complete
unit
Limit/decrease frequency due to module current protection (phase
current)
Limit/decrease frequency due to discharge
Limit/decrease frequency due to freeze protection
Limit/decrease frequency due to overload
Limit/decrease frequency due to module temperature protection
Oil return under cooling
Cold air prevention protection
Freeze protection
Note: Please refer to service manual for the troubleshooting procedure for outdoor unit.
40
P8
PU
E1
blink once
H3
dn
/
dd
/
E7
blink 7 times
Fo
blink once
H1
Lc
E4
blink 4 times
E8
blink 8 times
E5
blink 5 times
P5
H7
Ld
/
H5
PL
PH
HC
F8
En
/
F9
FH
F6
EU
F7
E9
blink 9 times
E2
blink twice
Troubleshooting
blink
19 times
blink
17 times
blink 3 times
/
/
/
/
blink once
blink once
blink
11 times
blink
15 times
blink 7 times
/
/
blink 5 times
blink
21 times
blink
11 times
blink 6 times
blink
8 times
/
/
blink
9 times
blink twice
blink twice
blink
6 times
blink
blink 6 times
6 times
blink
7 times
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