Error code reference

Merloni Refrigerator Error Code C1

Anomalous cycle fault

Merloni codes Merloni refrigerator codes

Anomalous cycle fault - compressor ON but freezer temperature fails to decrease; defrost sensor detects temperature >-5°C with compressor running more than 3 hours.

First step from the service manual

Check normal operation of refrigerant circuit; error terminates when defrost sensor detects temp >-5°C with compressor OFF.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
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C1 on my Merloni Refrigerator

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Anomalous cycle fault - compressor ON but

From Service Manual 450758, p.50:

1.Check normal operation of refrigerant circuit; error terminates when defrost sensor detects temp >-5°C with compressor OFF.

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part WPW10804018

Electronic control board

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First step from the service manual

Get the full diagnostic procedure for C1.

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