SHARP AE-M18AE
Instrukcja Serwisowa

AY-M09AE AE-M18AE

The room is not cooled at all or not cooled. The compressor does not operate.

The room is not heated at all or not heated. The compressor does not operate.

Push the "TEST" and "AUX" on the indoor unit.

Same as "The room is not cooled at all or not cooled.

Refer to trouble suspension table.

Measure resistances of TH1 and TH2.

Three LEDs are all lit.

Using a tester, measure the voltage between terminal"1" and "2" of connector CN2 on the P.W.B. ass'y.

Measure the secondary voltage of transformer.

Is the measured value approx. 16.0Vac ?

NO

YES Is the 3A fuse down ? Replace the PWB with a new one. YES

NO

Replace the fuse and varistor with new ones.

Replace the transformer with a new one.

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