Error code reference

Frigidaire Dryer Error Code EF3

Max timeout timer

Max timeout timer — exhaust blocked, exhaust or inlet control thermistor defective, contact sensor defective, or electronic control board defective (push button models).

First step from the service manual

Check vent restriction, contact sensor, and resistance values of exhaust control thermistor and inlet control thermistor.

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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EF3 on my Frigidaire Dryer

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Max timeout timer — exhaust blocked, exhaust or

From Service Manual 889746, p.38:

1.Check vent restriction, contact sensor, and resistance values of exhaust control thermistor and inlet control thermistor.

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 5304513033

Thermistor

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First step from the service manual

Get the full diagnostic procedure for EF3.

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