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[P22 error]
CN300 : Motor coil winding
CN301 : Motor position detection
∗ CN301, CN303 : Motor coil winding
CN300, CN302 : Motor position detection
Are connections of CN300, CN301, CN302 and
CN303 of P.C. board correct?
Does the fan rotate without trouble
when handling the fan with hands under condition
of removing CN300, CN301, CN302
and CN303 from P.C. board?
The status that there is
10k to 12kΩ resistance values between
1
(Yellow lead) and
4
(Pink lead)
of motor position detection of connector
(CN300, CN302) is normal.
Defective fan motor
Correct connection of connector.
Normal fan motor
(Defective CDB P.C. board)
NO
NO
NO
YES
YES
YES
YES
CN301, ∗ CN303
CN300
The status that the resistance values
between leads below are 12 to 22Ω.
Between
1
(Red lead) and
2
(White lead)
Between
2
(White lead) and
3
(Black lead)
Between
3
(Black lead) and
1
(Red lead) of
motor winding of connector (CN301, CN303)
NOTE :
However, GND circuit error inside of the motor is rarely detected even if the above check is carried out.
When the circuit does not become normal even if P.C. board has been replaced, replace outdoor fan motor.
Objective P.C. board
Fan motor winding
Motor position detection
Fan motor model
Motor winding resistance
RAV-SM160AT-E
CDB P.C. board (MCC-1531)
CN301/CN303
CN300/CN302
ICF-280-100
12 to 22 Ω