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No
Yes
Yes
No
Yes
No
Yes
No
Yes
No
[P12]
CN333
CN334
esuaCedoc kce
h
C Check code name
Indoor fan motor error
1. Wiring error of fan motor connector
2. Fan motor error
3. Indoor P.C. board error
Turn off power supply.
* Detectable in model equipped with DC fan motor
(4-way cassette, 2-way cassette, 1-way cassette,
concealed duct, wall and ceiling types)
Is there
connection error or
disconnection on connector
CN333, CN334 of indoor P.C.
board (MCC-1402)?
Does fan turn
without trouble when
turning it with
hands?
Is
resistance value
between each phase at
motor side of fan motor connector
CN333 on indoor P.C.
board (MCC-1402)
correct? *1
Is resistance
value at motor side of fan
motor connector CN334 on
indoor P.C. board (MCC-
1402) correct? *2
Is output
of indoor fan motor
position detective signal
correct? *3
Correct connector connection.
Replace indoor fan motor.
Replace indoor fan motor.
Replace indoor fan motor.
Replace indoor fan motor.
Check indoor P.C. board
(MCC-1402).
Failure
Replace
Remove connectors CN333 and CN334
on indoor P.C. board (MCC-1402).
*1
• Is not winding 1 (Red lead) to 3 (White lead), 3 (White lead) to 5 (Black lead), 5 (Black
lead) to 1 (Red lead) opened/shorted?
Resistance value should satisfy the follows.
[4-way Cassette type]
AP007 to AP030: Approx. 70 to 100
Ω
AP036 to AP056: Approx. 35 to 50
Ω
[2-way Cassette type]
AP007 to AP015: Approx. 70 to 100Ω
AP018 to AP030: Approx. 30 to 70Ω
AP036 to AP056: Approx. 20 to 50
Ω
[1-way Cassette type]
Approx. 30 to 70Ω
[Ceiling type]
AP015 to AP027: Approx. 30 to 70
Ω
AP036 to AP056: Approx. 20 to 50Ω
[Wall and concealed duct types]
Approx. 15 to 35Ω
• Is not grounded between cabinet and 1, 3, 5?
Should be 10MΩ
or more.
*2
Check resistance value of fan motor position detective circuit.
• Is not winding 1 (Yellow lead) to 4 (Pink lead)
opened/shorted?
Resistance should be 5 to 20kΩ.
*3
Check fan motor position detective signal.
• Measure voltage with tester between 1 and 5 of CN334 on
indoor P.C. board (MCC-1402) under condition of CN333
and CN334 installed and power-ON.
Turn fan slowly with
hands so that pin voltage fluctuates between 0 and 5V.
• Between 4 and 5: 5V
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
* Check there is 220-240V voltage of 1-3 pin of CN68 on indoor P.C. board.
[P10]
Sub-code: Overflowing indoor unit's address
esuaCedoc kcehC Check code name
Is float SW
connector (Indoor
control P.C. board
CN34) connected
normally?
Does float SW
operate?
Is wiring normal?
Does drain pump
operate?
Is power supply to
drain pump normal?*
Correct connector connection.
Check and correct wiring.
Check indoor P.C. board.
Failure
Replace
Check indoor P.C. board.
Failure
Replace
Check drain pipe, etc. Replace drain pump, and check cabling.
Water overflow in an indoor unit
1. Float SW malfunction
2. Drain pump malfunction
3. Clogging of drain pipe
4. Indoor P.C. board error
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