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16.3.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution (P0)
Error Code
P0
Malfunction
conditions
When the voltage signal the IPM sends to the compressor drive
chip is abnormal, the display LED shows “P0” and the AC turn
off.
Possible causes
●
Wiring mistake
●
IPM malfunction
●
Faulty outdoor fan assembly
●
Compressor malfunction
●
Faulty outdoor PCB
Trouble shooting:
Check the wiring between main PCB
and compressor. Does an error
exist?
Ensure a proper connection or
replace the wires and connectors
Yes
No
Check the IPM. Is it in working
order?
No
Yes
Replace the IPM board or replace
the main PCB
Check the outdoor fan and the
outdoor unit ventilation. Is it in
working order?
No
Please refer to the solution to the
“fan speed is out of control
”
malfunction
Yes
Check the compressor resistance
values. Are they within acceptable
parameters?
No
Replace the compressor
Yes
Replace the outdoor main PCB
Содержание 38QUA009DS
Страница 8: ...5 2 2 Part names of Indoor Outdoor units Cassette Unit...
Страница 9: ...6 A5 Ducted Units A6 Ducted Units...
Страница 10: ...7 Floor ceiling Units...
Страница 11: ...8 HESP DUCTED Units...
Страница 35: ...32 6 Wiring Diagram 6 1 Indoor Unit 40QTD018DS 40QTD024DS 40QTD036DS 40QTD048DS...
Страница 36: ...33 40QSM018DS 40QSM024DS 40QSM036DS 40QSM048DS...
Страница 37: ...34 40QZL018DS 40QZL024DS 40QZL036DS...
Страница 38: ...35 40QZL048DS 40QZL060DS...
Страница 40: ...37 6 2 Outdoor Unit 38QUA018DS 38QUA024DS...
Страница 41: ...38 38QUA036DS...
Страница 42: ...39 38QUA048DS 38QUA060DS...
Страница 44: ...41 40QSM018DS Code 0 Code 1 Code 2 Code 3 Code 4...
Страница 45: ...42 40QSM024DS Code 0 Code 1 Code 2 Code 3 Code 4...
Страница 46: ...43 40QSM036DS Code 0 Code 1 Code 2 Code 3 Code 4...
Страница 47: ...44 40QSM048DS Code 0 Code 1 Code 2 Code 3 Code 4...
Страница 60: ...57 12 Field Wiring 18K 24K 36K 48K...
Страница 61: ...58 60K...
Страница 104: ...101 P U P V...
Страница 105: ...102 P W P N...