12-3-7. Outdoor Unit Power Supply Failure

Measure voltage between Terminals 5 – 6 on terminal block of outdoor unit.

Set temperature by remote controller so conditioner operates under Thermo. ON in either cooling or heating operation, then start operation. Then measure voltage between Terminals 1 – 2 on terminal block of outdoor unit.

Caution: It is not possible to measure while 3-minute restart timer is in operation.

Normal

AC 104 – 126 V

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

In case of abnormality Check connection of inter-unit cable.

No abnormalities, replace indoor unit PCB.

No abnormalities, proceed to check 12-3-8.

12-3-8. Outdoor Unit Power Transformer Defective

Check voltage of power transformer.

Measure voltage of 4P connector (CN10A), 3P connector (CN10B) and 2P connector (CN09) of indoor unit PCB (without disconnecting connectors).

 

4P, CN10A

RED – RED

20

– 30 V

 

 

 

 

 

 

Normal

BLU – BLU

10

– 15 V

 

 

 

3P, CN10B

YEL – YEL

85 – 115 V

 

 

 

 

 

 

 

 

 

 

CN09

ORG – ORG

104

– 126 V

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

Caution: Care should be taken that the tips of the tester rods do not touch each other since the circuit is electrically charged.

In case of abnormality Replace power transformer.

No abnormalities, replace outdoor unit PCB.

12-3-9. Outdoor Unit Compressor Motor Overload Relay Has Operated

Caution: Carry out this check only after cutting power at the mains or disconnecting unit from the power supply.

Check temperature overload relay for continuity.

Normal

1 Ω or less

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

In case of abnormality Check it again after more than 30 minutes (wait for it to cool down). If the result is the same, replace the temperature overload relay.

No abnormalities, check wiring to overload relay.

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Sanyo KGS1411, CG1411 service manual Outdoor Unit Power Supply Failure, Outdoor Unit Power Transformer Defective

KGS1411, CG1411 specifications

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