Indoor fan motor
trouble
1.
Installation
environment
trouble
2. Electric parts
trouble
3. Wiring
trouble
of fan motor connector
4. Fan motor
trouble
5..
I
ndoor P.C. board
trouble
*1 : Measure the resistance value of each winding by using the tester
Fan motor inside wiring diagram
Check code name
Check code
[P12]
Cause
Red
White
Black
SWF-340W1000-1
Position
Resistance value
Red - White
2.6 ± 0.3 Ω
White - Black
2.6 ± 0.3 Ω
Black - Red
2.6 ± 0.3 Ω
at 20°C
YES
NO
YES
*1 : Power relay pin No,
NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
Power supply OFF
If there is any poor connection of
the connector of MCC-1610, or
disconnection of the motor lead.
Remove the motor lead from
CN703,704,705 of MCC-1610
If the fan motor is locked or not.
(Unable to rotate it by hand)
If the winding resistance of the
motor is correct or not.
*2
Measure the power supply voltage
and if the voltage is normal or not.
220-240VAC(50Hz) or
220VAC(60Hz)
If the power relay operates
normally or not.
(the voltage between power relay
4pin-GND and 6pin-GND are
198
-264V? *1)
Correction of the connection
of the connector
Replacement of the motor
Adjustment of the main power
supply on the equipment side
The voltage between
the terminals of CN602
of MCC-1610 is 12V
Replacement of the power relay
Replacement of the MCC-1610
Power supply ON
Replacement of the MCC-1610
NO
Power supply voltage is less than
198
V
Power supply voltage is more than 264V
The ambient temperature is
normal or not.
Improves the installation
environment
more than 80
℃
[P1
2
]
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