12-6-7. Combustion Blower Motor Abnormal Revolution

Failure Display on Outdoor Unit PCB: ● ● ● ●

Check combustion blower motor.

Measure AC voltage at blower motor connector (CN05) (under heating operation, during combustion).

Normal

PUR – PUR AC 30 – 115 V

*Use a circuit tester (set to AC range).

In case of abnormality Replace outdoor unit PCB.

Disconnect combustion blower motor connector, and measure resistance at connector.

Normal

PUR – PUR 10 – 30 Ω

* Use a circuit tester (set to Ω range).

In case of abnormality Replace combustion blower motor.

12-6-8. ON/OFF Valve Failure

Failure Display on Outdoor Unit PCB: ● ● ● ●

Check ON/OFF valve coil (CN06).

Measure AC voltage at the ON/OFF valve coil connector (under heating operation, during combustion).

Normal

BLK – BLK AC 104 – 126 V

*Use a circuit tester (set to AC range).

In case of abnormality Replace outdoor unit PCB.

Disconnect ON/OFF valve connector and measure resistance at connector.

Normal

BLK – BLK 300 – 500 Ω

* Use a circuit tester (set to Ω range).

In case of abnormality Replace ON/OFF valve coil.

12-6-9. Reversing Valve Failure

Failure Display on Outdoor Unit PCB: ● ● ● ●

Check reversing valve coil.

Measure AC voltage at reversing valve coil connector (CN03) (under heating operation, during combustion).

Normal

BLK – BLK AC 104 – 125 V

*Use a circuit tester (set to AC range).

In case of abnormality Replace outdoor unit PCB.

Disconnect reversing valve coil connector and measure resistance at connector.

Normal

BLK – BLK 300 – 500 Ω

* Use a circuit tester (set to Ω range).

In case of abnormality Replace reversing valve coil.

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.

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Sanyo CG1411, KGS1411 Combustion Blower Motor Abnormal Revolution, 12-6-8. ON/OFF Valve Failure, Reversing Valve Failure

KGS1411, CG1411 specifications

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