Sanyo CG1411 User Manual download pdf (Page 61)

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.

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

No abnormalities, replace indoor unit PCB.

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

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

Normal AC 104 – 126 V

12-3-8. Outdoor Unit Power Transformer Defective

➀ 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).

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.

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).

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.

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.

➀ Check temperature overload relay for continuity.

Normal 1 Ω or less

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

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Sanyo CG1411 User Manual Page 61