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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
Summary of Contents for 38QUA009DS
Page 8: ...5 2 2 Part names of Indoor Outdoor units Cassette Unit...
Page 9: ...6 A5 Ducted Units A6 Ducted Units...
Page 10: ...7 Floor ceiling Units...
Page 11: ...8 HESP DUCTED Units...
Page 35: ...32 6 Wiring Diagram 6 1 Indoor Unit 40QTD018DS 40QTD024DS 40QTD036DS 40QTD048DS...
Page 36: ...33 40QSM018DS 40QSM024DS 40QSM036DS 40QSM048DS...
Page 37: ...34 40QZL018DS 40QZL024DS 40QZL036DS...
Page 38: ...35 40QZL048DS 40QZL060DS...
Page 40: ...37 6 2 Outdoor Unit 38QUA018DS 38QUA024DS...
Page 41: ...38 38QUA036DS...
Page 42: ...39 38QUA048DS 38QUA060DS...
Page 44: ...41 40QSM018DS Code 0 Code 1 Code 2 Code 3 Code 4...
Page 45: ...42 40QSM024DS Code 0 Code 1 Code 2 Code 3 Code 4...
Page 46: ...43 40QSM036DS Code 0 Code 1 Code 2 Code 3 Code 4...
Page 47: ...44 40QSM048DS Code 0 Code 1 Code 2 Code 3 Code 4...
Page 60: ...57 12 Field Wiring 18K 24K 36K 48K...
Page 61: ...58 60K...
Page 104: ...101 P U P V...
Page 105: ...102 P W P N...