Sanyo 26KHHS72R Service Manual - Page 157
Alarm P22]
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(4) [Alarm "P22"] Outdoor unit fan motor drive circuit trouble 4. Service procedures Are connectors CN003 and CN004 connected No correctly to the outdoor unit control PCB? Yes Disconnect connectors CN003 and CN004 No from outdoor unit control PCB, and rotate fan by hand. Does it rotate easily? Yes Correct the connector connections. Outdoor unit fan motor coil resistance is OK if it is as shown below. * Disconnect connector CN004 and No measure on the plug side. (1) Red - white: 30 - 40 Ω 1 (2) White - black: 30 - 40 Ω (3) Black - red: 30 - 40 Ω Yes 2 Motor position detection circuit resistance is OK if it is as shown below. * Disconnect connector CN003 and measure on the plug side. No (1) Grey - yellow: 100 kΩ or more, or ∞ (open) (2) Grey - blue: 100 kΩ or more, or ∞ (open) (3) Grey - orange: 100 kΩ or more, or ∞ (open) 3 Yes Fan motor is OK; outdoor unit Fan motor trouble 4 control PCB has failed. → Replace. → Replace. Note: In the case of a GND circuit failure inside the motor, the results of the above check may be OK. 5 If operation is not OK after the outdoor unit control PCB has been replaced, then replace the outdoor unit fan motor. IV-11 6 SM831148
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