Error code reference

Panasonic Microwave Error Code F33

Open temperature sensor (exhaust) detected.

Panasonic codes Panasonic microwave codes

Open temperature sensor (exhaust) detected.

First step from the service manual

Check temperature sensor, digital programmer circuit, or loose connector CN4.

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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F33 on my Panasonic Microwave

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Open temperature sensor (exhaust) detected

From Service Manual 950989, p.41:

1.Check temperature sensor, digital programmer circuit, or loose connector CN4.

2.Disconnect the sensor and measure resistance at the sensor body. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens and shorts. Back-probe the sensor pins at the control board connector; a reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

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First step from the service manual

Get the full diagnostic procedure for F33.

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