Error code reference

Merloni Refrigerator Error Code A1

Freezer compartment temperature alarm

Merloni codes Merloni refrigerator codes

Freezer compartment temperature alarm: FZ air sensor reads higher than -6°C and after 150 minutes temperature is above +1°C, or remains between +1°C and -6°C for 24 hours.

First step from the service manual

For display models, press RESET ALARM key twice to exit alarm. For standard models, operate freezer knob to switch appliance off (OFF position) and on again.

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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Freezer compartment temperature alarm: FZ air

From Service Manual 450696, p.28:

1.For display models, press RESET ALARM key twice to exit alarm. For standard models, operate freezer knob to switch appliance off (OFF position) and on again.

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 A1.

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