Toshiba RAV-SM802UT-E User Manual

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CN300 : Motor coil winding
CN301 : Motor position detection

*

CN301, CN303 : Motor coil winding
CN300, CN302 : Motor position detection

Are connections of CN301 and

CN300 of P.C. board correct?

Does the fan rotate without trouble

when handling the fan with hands under condition

of removing CN301 and CN300 from P.C. board?

The status that the resistance values

between leads below are 50 to 80

W

for 40

W

 motor (ICF-140-40) and 25 to 55

W

for 60

W

 motor (ICF-140-60-1) is normal.

Between      (Red lead) and      (White lead)

Between      (White lead) and      (Black lead)

Between      (Black lead) and      (Red lead)

of motor winding of connector (CN301)

The status that there is 

5k to 20kW resistance values between 

     (Yellow lead) and      (Pink lead)

of motor position detection of

connector (CN300) is normal.

Normal fan motor
(Control or CDB P.C. board)

Defective fan motor

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.

1

2

2

3

3

1

1

4

(Control P.C. board or CDB P.C. board)

NO

NO

NO

YES

YES

YES

YES

CN301, 

*

 CN303

CN300

Objective P.C. board

Fan motor winding

Motor position detection

Control P.C. board

CDB P.C. board

CDB P.C. board

CN300

CN301

CN301/CN303

CN301

CN300

CN300/CN302