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16.3.10 Inverter compressor drive error diagnosis and solution(P4)
Error Code
P4
Malfunction conditions
Abnormalities in the inverter compressor drive is detected by a
special detection circuit, which can perform communication
signal detection, voltage detection, and compressor rotation
speed signal detection.
Potential causes
●
Wiring mistake
●
IPM malfunction
●
Faulty outdoor fan assembly
●
Compressor malfunction
●
Faulty outdoor PCB
Trouble shooting:
Check the wiring between the main
PCB and compressor. Is it improperly
wired?
Ensure proper connection or
replace the wires and connectors
Yes
No
Check the IPM. Is it functioning
properly?
No
Yes
Replace the IPM board or replace
the main PCB
Check the outdoor fan and the
outdoor unit ventilation. Is it
functioning properly?
No
Please refer to
“Fan Speed
Malfunction”
Yes
Check the compressor resistance
values. Are they within acceptable
parameters?
No
Replace the compressor
Yes
Replace the outdoor main PCB
Содержание CCA3U-09HRFN1-MC
Страница 8: ...5 2 2 Part names of Indoor Outdoor units Cassette Units ...
Страница 9: ...6 A5 Duct Units A6 Duct Units ...
Страница 10: ...7 Console Units ...
Страница 11: ...8 Ceiling floor Units ...
Страница 12: ...9 HESP DUCT Units ...
Страница 31: ...28 Console Units 16 Drain pipe 195 Hanging arm Unit mm 700 600 210 ...
Страница 38: ...35 Console Units Ceiling floor Units ...
Страница 43: ...40 CFAU 09HRFN1 M C CFAU 12HRFN1 M C MCD 36HRFN1 M C MCD 48HRFN1 M D ...
Страница 44: ...41 CTBU 36HWFN1 M C CTBU 48HWFN1 M C ...
Страница 45: ...42 MUEU 18HRFN1 M C MUEU 24HRFN1 M C MUE 36HRFN1 M C ...
Страница 46: ...43 MUE 48HRFN1 M C MUE 60HRFN1 MW ...
Страница 47: ...44 MUE 36HRFN1 M C MUE 48HRFN1 M C ...
Страница 48: ...45 MUE 60HRFN1 MW MTI 18HWFN1 MT0W MTIU 24HWFN1 MW ...
Страница 49: ...46 MTIU 36HWFN1 MW MTIU 48HWFN1 MW MHG 60HWFN1 MW ...
Страница 51: ...48 MOBA30 09HFN1 MT0W MOB30 12HFN1 MT0W ...
Страница 52: ...49 MOD30 24HFN1 MT0W MOD01 23HFN1 MT0W ...
Страница 53: ...50 MOD30U 36HFN1 M ...
Страница 59: ...56 CTBU 09HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 60: ...57 CTBU 12HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 61: ...58 CTBU 18HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 62: ...59 CTBU 24HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 63: ...60 CTB 36HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 64: ...61 CTB 48HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 74: ...71 12 Field Wiring 36K 48K 60K ...
Страница 123: ...120 P U P V ...
Страница 124: ...121 P W P N ...
Страница 141: ...138 ...
Страница 151: ...148 4 Remove the evaporator support board 5 Screw off the fixing screws to remove the evaporator 4 screws 1 screw ...
Страница 187: ...184 5 Remove the four fixing screws of the fan motor then remove the motor 5 ...
Страница 200: ...197 6 Remove the grounding screw 7 Remove the Wires 1 2 3 or L1 L2 S Then remove the electronic control box 7 ...