Error code reference

Merloni Dishwasher Error Code AL 09

Software setup/recognition error

Software setup/recognition error - the type of software is not recognized in EEPROM, or wrong keypad connected.

First step from the service manual

Check timer programming; verify correct keypad/interface card is connected.

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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M+ Max·Merloni Dishwasher

AL 09 on my Merloni Dishwasher

M+

Software setup/recognition error - the type of

From Service Manual 201740, p.32:

1.Check timer programming; verify correct keypad/interface card is connected.

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 AL 09.

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