Toshiba RAS-B10GKVP-E Service Manual page 98

11-11. 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 failure of the outdoor fan motor
3) Position-detect circuit failure inside of the outdoor fan motor
4) Motor drive circuit failure 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) of the
outdoor fan motor from the outdoor P.C. board.
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 17 to 25Ω, 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.
YES
– 2 (White lead)
– 3 (Black lead)
– 1 (Red lead)
YES
NO
NO
Fan motor error
– 98 –
CN300