Sanyo XH3642 / CH3642, XH4242 / CH4242 Is there connector contact defect? Correct the connection

4. Service procedures

10)Symptom: LCD on the remote controller displays “CHECK P02”. (Compressor / outdoor fan protection thermostat operation warning / power supply voltage

abnormality)

Start

Is the power supply to the outdoor No unit normal?

(Voltage / defective phase?)

Yes

Yes

Is the fuse on the outdoor unit PCB blown (F1 and F2)?

No

Yes

Is the high pressure switch (63 PH) off?

No

Yes

Is there 230-208 V AC between CN19-9 and CN19-7 on the outdoor unit PCB?

No

Check the power breaker etc. and repair.

Replace the fuse.

Replace the outdoor unit PCB.

Replace the outdoor unit PCB.

Is the outdoor fan wire winding No

protection thermostat (49FO) off?

Yes

4

•No refrigerant

•High load

•4-way valve defect

•Clogged refrigerant circuit

•Electronic refrigerant control valve defect (indoor unit)

Replace the outdoor fan.

Yes

Is there connector contact defect? Correct the connection

No

Replace the outdoor unit PCB.

2099_THS_I

SM830082

IV - 14