How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad - Toshiba RAS-10YAV-E Service Manual

10-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

1. Symptom
• Outdoor fan motor does not rotate.
• Outdoor fan motor stops within several tens seconds though it started rotating.
• Outdoor fan motor rotates or does not rotate according to the position where the fan stopped., etc.
Remote controller check code "02 : Outdoor block, 1A : Outdoor fan drive system error"
2. Cause
The following causes are considered when the outdoor fan motor does not normally rotate.
1) Mechanical lock of the outdoor fan motor
2) Winding error of the outdoor fan motor
3) Position-detect circuit error inside of the outdoor fan motor
or
4) Motor drive circuit error of the outdoor P .C. board
3. How to simply judge whether outdoor fan motor is good or bad
Turn OFF the breaker.
Disconnect two connectors (CN300 and CN301)
of the outdoor fan motor from the inverter.
Does the fan rotate without trouble
when rotating it with hands?
If the resistance value between
1 (Red lead)
2 (White lead)
3 (Black lead)
of the connector
(CN300 : Motor winding)
is 50 to 80 , it is normal.
If the resistance value between
1 (Yellow lead)
of the connector
(CN301 : Motor position detection)
is 5k to 20k , it is normal.
Fan motor is normal.
(Outdoor P.C. board error)
NOTE :
However, GND circuit error inside of the motor may be accepted in some cases when the above check is
performed.
When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.
NO
YES
– 2 (White lead)
– 3 (Black lead)
NO
– 1 (Red lead)
YES
– 4 (Pink lead)
NO
YES
– 58 –
CN300
Fan motor error