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11-10. 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
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.
CN300
Turn OFF the breaker.
Fan motor is normal.
Disconnect two connectors (CN300 and CN301)
of the outdoor fan motor from the inverter.
(Outdoor P.C. board error)
Fan motor error
YES
NO
NO
NO
YES
YES
If the resistance value between
1 (Red lead)
– 2 (White lead)
2 (White lead) – 3 (Black lead)
of the connector (CN300 : Motor winding)
is 29.3 to 35.9
Ω
, it is normal.
If the resistance value between
1 (Yellow lead) – 4 (Pink lead)
of the connector
(CN301 : Motor position detection)
is 5 to 20 k
Ω
, it is normal.
Does the fan rotate without trouble
when rotating it with hands?
Summary of Contents for RAS-4M23SACV-E
Page 27: ... 27 4 2 Outdoor Unit RAS 4M23SAV E RAS 4M23SACV E ...
Page 114: ... 114 MCC 1438 ...
Page 115: ... 115 MCC 818 ...