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Error code reference

Speed Queen Dryer Error Code FAN COMM ERROR

Output board failed to communicate with the fan motor after 3 retry attempts.

Speed Queen codesSpeed Queen dryer codes

Output board failed to communicate with the fan motor after 3 retry attempts.

First step from the service manual

Clear by powering down machine, pressing Clear Fatal Error keys, or sending Clear Fatal Error network command.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What FAN COMM ERROR means on a Speed Queen dryer

The FAN COMM ERROR on a Speed Queen dryer indicates that the output control board attempted to establish communication with the fan motor three times and failed on all attempts. This code is classified as a fatal error, meaning the dryer will not continue operation until the fault is addressed and cleared. The fan motor in this system is not simply switched on and off by direct relay control; it communicates with the output board through a digital or network-based protocol, allowing the board to confirm the motor received commands and is responding correctly.

The communication link between the output board and the fan motor can break down for several reasons. A wiring harness fault, corroded connector, or damaged communication wire between the two components will prevent the board from receiving acknowledgment signals from the motor. A failed fan motor itself, particularly one with a damaged internal control module, can also produce this error since the motor would be unable to respond to board queries even if the wiring is intact.

Before pursuing component-level diagnosis, the first step is to clear the fatal error by powering the machine down completely, using the Clear Fatal Error key sequence on the control panel, or issuing a Clear Fatal Error command through the network interface if the unit is connected to a commercial laundry management system. If the error returns immediately after clearing, this confirms an active fault that requires physical inspection of the fan motor wiring, connectors, and the output board itself.

Source: manufacturer service documentation.

Common causes of FAN COMM ERROR

  1. 01

    Loose or corroded wiring connector

    Wiring / connection

    The communication wire or harness connector between the output board and the fan motor may have worked loose or corroded, breaking the signal path. Inspect all connectors at both the fan motor and the output board for corrosion, bent pins, or incomplete seating.

  2. 02

    Failed fan motor

    Part replacement

    A fan motor with a damaged internal control module will fail to respond to communication queries from the output board even if power and wiring are intact. If the wiring checks out, the motor itself should be tested and replaced if it is not responding.

  3. 03

    Damaged communication wiring

    Part replacement

    A broken, pinched, or chafed wire in the harness between the output board and the fan motor can interrupt the communication signal entirely. Visually trace the harness for wear points, heat damage, or physical breaks.

  4. 04

    Failed output board

    Part replacement

    If the output board itself has a damaged communication circuit, it will be unable to successfully transmit or receive signals to the fan motor regardless of motor or wiring condition. This is typically diagnosed after the wiring and motor have been ruled out.

  5. 05

    Temporary control system glitch

    Wiring / connection

    Occasionally a power fluctuation or software fault can cause the board to lose communication momentarily and latch a fatal error. Performing a proper power-down and using the Clear Fatal Error sequence will resolve this if no physical fault is present.

See the test procedure for each cause

Frequently asked questions about FAN COMM ERROR

What does FAN COMM ERROR mean on a Speed Queen dryer?
The FAN COMM ERROR means the output control board tried to communicate with the fan motor three times and received no response on any attempt. Because the fan is critical for airflow and safe dryer operation, the machine locks out and will not run until the error is cleared and the underlying fault is corrected. The cause is typically a wiring fault, a failed fan motor, or in some cases a faulty output board.
Will resetting the dryer clear the FAN COMM ERROR?
You can clear the fatal error by fully powering down the machine, using the Clear Fatal Error key combination on the control panel, or sending a Clear Fatal Error command through a connected laundry network system. However, if the underlying fault is still present, the error will return as soon as the dryer attempts to operate again. A reset alone only clears the latched code and does not fix the root cause.
Is it safe to use my Speed Queen dryer when it shows FAN COMM ERROR?
No, you should not attempt to bypass or override this error to run the dryer. The fan motor is responsible for moving heated air through the drum and exhausting it safely. If the fan is not operating correctly, heat can build up inside the dryer and create a fire hazard. The machine correctly refuses to operate until the fault is resolved.
How much does it cost to fix a FAN COMM ERROR on a Speed Queen dryer?
Repair costs depend heavily on which component has failed. If only a wiring connector needs to be reseated or replaced, costs would typically fall in the range of $50 to $150 for a service call. Fan motor replacement generally costs $150 to $350 including parts and labor. Output board replacement tends to be the most expensive repair, often ranging from $200 to $450 depending on the model and labor rates in your area.
Can I diagnose a FAN COMM ERROR myself or do I need a technician?
A knowledgeable DIYer can start by clearing the error and checking whether it returns, then visually inspecting the wiring harness and connectors between the fan motor and the output board for obvious damage or loose connections. However, testing the fan motor's communication circuit and diagnosing the output board typically requires electrical testing tools and familiarity with the specific wiring layout of the machine. If the visual inspection does not reveal a clear problem, a qualified appliance technician is the recommended next step.

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