Error code reference

Panasonic Microwave Error Code Fe7

Shorted contacts of relay RY-4.

Panasonic codes Panasonic microwave codes

Shorted contacts of relay RY-4.

First step from the service manual

Check relay RY-4 for failure or digital programmer circuit failure.

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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Fe7 on my Panasonic Microwave

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Shorted contacts of relay RY-4

From Service Manual 949435, p.47:

1.Check relay RY-4 for failure or digital programmer circuit failure.

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 Fe7.

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