29
Notes
· High voltage is applied to the connector (CNF1) for the fan motor. Pay attention to the service.
· Do not pull out the connector (CNF1) of the motor with the power supply on.
(It may damage the outdoor controller circuit
board and fan motor.)
Self check
Symptom: The outdoor fan cannot rotate.
1
2
9-4-1. Check method of DC fan motor (fan motor/outdoor controller circuit board)
No
Wiring contact check
Check contact of fan motor connector
(CNF1)
Recover wiring.
END
END
Replace the fan motor.
Replace the
outdoor controller circuit board.
Replace the outdoor controller circuit board.
Replace the outdoor controller circuit board.
Replace fan motor.
Replace the fan motor.
Check
fan motor rotation.
Check
fan motor rotation.
Is the voltage normal?
Is the fuse normal?
Is there contact failure?
Check fuse (F5) on outdoor controller
circuit board.
Yes
Yes
No
No
Yes
Power supply check
Measure the voltage on the outdoor controller circuit.
(Remove the connector CNF1.)
TEST POINT
1
V
DC
280
−
330 V DC (between 1 (+) and 4 (
−
) of CNF1)
2
V
CC
15 V DC
(between 5 (+) and 4 (
−
) of CNF1)
Fail
OK
Fail
OK
<How to check the resistance>
To measure the resistance, connect the
negative(−)•end•of•the•tester•to•pin•4.
UNIT
W85VHA
＊
W85VHA2
＊
FAN MOTOR
RG61N769
RG61V143
Measuring points
Resistance
Pin 1–pin 4
400
～
500 k
"
∞
Pin 5–pin 4
1.2 k
"
50k
"
Pin 6–pin 4
155 k
"
150 k
"
Pin 7–pin 4
∞
∞
OCH465D
