Error code reference

Merloni Washer Error Code F05

Pump blocked or pressure switch empty level not reached.

First step from the service manual

Check the efficiency of J9 connector contacts on the card checking the presence of 220V current between pins 8 and 9.

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

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F05 on my Merloni Washer

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Pump blocked or pressure switch empty level not

From Service Manual 105505, p.37:

1.Check the efficiency of J9 connector contacts on the card checking the presence of 220V current between pins 8 and 9.

2.Measure drain pump winding resistance at connector J7 on the main control. Expected: 12 to 16 ohms at room temperature.

3.Back-probe the pump driver output under load. Verify the board switches the pump at 120 VAC during the drain portion of the cycle.

Part W10876537

Drain pump assembly

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