Error code reference

Electrolux Washer Error Code F 02

A water temperature problem.

Electrolux codes Electrolux washer codes

A water temperature problem.

First step from the service manual

First check to see if the incoming water hoses are connected properly. If so, disconnect both wires from the water temperature sensor and measure the resistance of the sensor. If the reading is less than 3K or more than 163K, replace the sensor. If the reading is between 3K and 163K, reconnect the wires to the sensor and unplug the small four pin plug from the control board. Measure the resistance between pins 3 and 4 in the plug. If the reading is the same as the sensor reading, replace the control board. If the meter reading is not the same as that at the sensor, the wiring between the control board and sensor is defective.

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
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F 02 on my Electrolux Washer

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A water temperature problem

From Service Manual 506963, p.15:

1.First check to see if the incoming water hoses are connected properly. If so, disconnect both wires from the water temperature sensor and measure the resistance of the sensor. If the reading is less than 3K or more than 163K, replace the sensor. If the reading is between 3K and 163K, reconnect the wires to the sensor and unplug the small four pin plug from the control board. Measure the resistance between pins 3 and 4 in the plug. If the reading is the same as the sensor reading, replace the control board. If the meter reading is not the same as that at the sensor, the wiring between the control board and sensor is defective.

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

What F 02 means on a Electrolux washer

The F 02 error code on an Electrolux washer indicates a water temperature problem, meaning the control board is receiving a signal from the water temperature sensor that falls outside the expected operating range. The water temperature sensor is a thermistor, a resistive component whose resistance changes predictably with temperature. The control board monitors this resistance to determine water temperature and regulate heating during wash cycles. When the sensor signal is absent, erratic, or out of the acceptable range, the board triggers F 02 to halt operation and protect the machine.

Diagnosing this code requires measuring the resistance of the water temperature sensor directly at its terminals after disconnecting the wiring. A healthy sensor will read between 3K ohms and 163K ohms depending on the current water temperature. A reading below 3K ohms indicates a short in the sensor, while a reading above 163K ohms indicates an open circuit or failed thermistor. Either condition means the sensor must be replaced.

If the sensor tests within the acceptable range, the fault may lie in the wiring harness between the sensor and the control board, or in the control board itself. To isolate the fault, unplug the four-pin connector from the control board and measure resistance between pins 3 and 4. If this reading matches the sensor reading, the wiring is intact and the control board is misinterpreting the signal, pointing to a failed board. If the readings differ, the wiring harness between those two components is damaged or has a broken connection. Also confirm that the incoming hot and cold water hoses are properly connected, as reversed or missing hose connections can contribute to temperature-related faults.

Source: manufacturer service documentation.

Common causes of F 02

01
Failed water temperature sensor
Part replacement
The thermistor sensor has failed open or shorted, producing a resistance reading outside the 3K to 163K ohm range. This is the most common cause of F 02 and requires replacing the sensor.
02
Damaged wiring harness between sensor and control board
Wiring / connection
A broken, corroded, or pinched wire between the temperature sensor and the control board can cause the resistance reading at pins 3 and 4 of the board connector to differ from the reading at the sensor itself. Inspect the harness for visible damage and test continuity.
03
Improperly connected water inlet hoses
Wiring / connection
If the hot and cold water supply hoses are reversed or not fully connected, the machine may experience unexpected temperature conditions that trigger this fault. Always verify hose connections before moving to component-level diagnostics.
04
Failed control board
Part replacement
If the sensor resistance tests within the acceptable range and the wiring harness measures the same resistance at pins 3 and 4 of the board connector, the control board itself is misreading the sensor signal and must be replaced.

See the test procedure for each cause

Frequently asked questions about F 02

What does F 02 mean on a Electrolux washer?

F 02 on an Electrolux washer indicates a water temperature problem. The control board is not receiving a valid signal from the water temperature sensor, which monitors the temperature of the water inside the machine. The fault can stem from a failed sensor, damaged wiring, or a defective control board. The washer will stop operating until the issue is resolved.

Can I fix the F 02 error myself?

A knowledgeable DIYer can diagnose this code using a multimeter. Start by checking that the water inlet hoses are properly connected, then disconnect the sensor wires and measure resistance. A reading below 3K or above 163K ohms means the sensor needs replacement, which is a relatively straightforward repair. If the sensor tests fine, diagnosing the wiring harness or control board may require more technical comfort, but it is still manageable with basic electrical knowledge.

Is it safe to use my Electrolux washer while F 02 is displayed?

It is not recommended to continue running the washer while F 02 is active. Without accurate water temperature data, the control board cannot properly manage the wash cycle, which could result in incorrect water heating or incomplete cycles. Continuing to run the machine in this state could potentially damage laundry or other components.

How much does it cost to fix an F 02 error on an Electrolux washer?

If the water temperature sensor is the cause, replacement parts typically cost in the range of $20 to $60 depending on the model, making it one of the more affordable repairs. If the control board is at fault, board replacement can range from $150 to $350 or more for parts alone. Professional labor will add to these costs if you choose not to repair it yourself.

Will resetting my Electrolux washer clear the F 02 error code?

Unplugging the washer and plugging it back in may temporarily clear the F 02 code, but the error will return if the underlying fault has not been corrected. A reset does not fix a failed sensor, broken wiring, or defective control board. Proper diagnosis and repair of the root cause is necessary to permanently resolve the fault.

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First step from the service manual

Get the full diagnostic procedure for F 02.

What F 02 means on a Electrolux washer

Common causes of F 02

Failed water temperature sensor

Damaged wiring harness between sensor and control board

Improperly connected water inlet hoses

Failed control board

Frequently asked questions about F 02

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