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4. SERVICE PROCEDURES
9)
Symptom: LCD on the remote controller displays "CHECK P01". (Indoor fan
Is there 220-240 V AC between S4
and T20-3 on the indoor unit PCB?
Yes
Is there 220-240 V AC between
T20-3 and S4 after T20-1 and T20-3
on the indoor unit PCB shorted?
Replace the indoor unit PCB.
4
protection thermostat operation warning)
Start
No
Yes
No
Is the indoor fan wire winding
protection thermostat (49FI) off?
Yes
Replace the indoor fan.
75
–
–
No
Correct the connection
0340_M_I
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