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16.3.3 Fan speed malfunction diagnosis and solution (E3)
Error Code
E3
Malfunction conditions
When indoor fan speed is too low (300RPM) for a certain period
of time, the unit ceases operation and the LED displays a failure
code.
Potential Causes
●
Wiring mistake
●
Faulty fan assembly
●
Faulty fan motor
●
Faulty PCB
Trouble shooting:
Power off, then restart the
unit after 2 minutes. Does
a problem remain?
Shut off the power supply,
Rotate the fan by hand.
Does it turn easily?
The unit is operating normally
Find the cause of the
problem and resolve it
Check the wiring of fan
motor. Is it improperly
wired?
No
Yes
No
Correct the connections.
No
No
Replace the fan motor
Yes
Yes
Measure the voltage for the
fan motor from the main
PCB. Is it within normal
parameters?
Yes
Replace the main PCB
No
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...