Air-Conditioner Service Manual

– 77 –
[P22 error]/[1A error]
(RAV-SM800AT-E)
* Connector of RAV-SM560AT-E differs from
that of RAV-SM800AT-E.
CN300: Motor coil winding
CN301: 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
for 40W motor (ICF-140-40) and 25 to 55
for 60W 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 20k
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.
Objective P.C. board
Fan motor winding
Motor position detection
Fan motor winding
Motor position detection
Single phase
RAV-SM560AT-E
Single phase
RAV-SM800AT-E
Control P.C. board
CN300
CN301
CDB P.C. board
CN301
CN300
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
CN300