Sanyo CG1411 User Manual
62
12-6-7. Combustion Blower Motor Abnormal Revolution
Failure Display on Outdoor Unit PCB:
●
●
● ●
●
●
Check combustion blower motor.
➀
Measure AC voltage at blower motor connector (CN05) (under heating operation, during combustion).
In case of abnormality
➞
Replace outdoor unit PCB.
In case of abnormality
➞
Replace combustion blower motor.
➁
Disconnect combustion blower motor connector, and measure resistance at connector.
*
Use a circuit tester (set to AC range).
*
Use a circuit tester (set to
Ω
range).
Normal
PUR – PUR AC 30 – 115 V
*
Use a circuit tester (set to AC range).
Normal
BLK – BLK AC 104 – 126 V
*
Use a circuit tester (set to AC range).
Normal
BLK – BLK AC 104 – 125 V
Normal
BLK – BLK 300 – 500
Ω
Normal
BLK – BLK 300 – 500
Ω
Normal
PUR – PUR 10 – 30
Ω
12-6-8. ON/OFF Valve Failure
Failure Display on Outdoor Unit PCB:
● ●
●
● ●
●
Check ON/OFF valve coil (CN06).
➀
Measure AC voltage at the ON/OFF valve coil connector (under heating operation, during combustion).
In case of abnormality
➞
Replace outdoor unit PCB.
In case of abnormality
➞
Replace ON/OFF valve coil.
➁
Disconnect ON/OFF valve connector and measure resistance at connector.
*
Use a circuit tester (set to
Ω
range).
12-6-9. Reversing Valve Failure
Failure Display on Outdoor Unit PCB:
● ●
●
●
●
Check reversing valve coil.
➀
Measure AC voltage at reversing valve coil connector (CN03) (under heating operation, during combustion).
In case of abnormality
➞
Replace outdoor unit PCB.
In case of abnormality
➞
Replace reversing valve coil.
➁
Disconnect reversing valve coil connector and measure resistance at connector.
Caution: Reversing valve failure can be displayed when there is a shortage of refrigerant. Therefore if the
above check shows normal, check the amount of refrigerant.
*
Use a circuit tester (set to
Ω
range).