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Error code reference

Speed Queen Dryer Error Code ICM COMM ERROR

Output board failed to communicate with the ignition control module (ICM); control turns off all outputs.

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What the ICM COMM ERROR error code actually means

Your Speed Queen dryer's control board lost contact with the part that controls gas ignition, so the dryer shut itself off as a safety precaution. This could be caused by a loose wire connection or a failed component in the ignition system. The dryer can be reset a few times, but if the error keeps coming back, a technician will need to inspect the ignition module and wiring.

Diagnostic procedure

The full ICM COMM ERROR procedure

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1
First diagnostic step
Control allows IO board to clear error 3 times before entering Machine Error Mode. Clear by powering down, pressing Clear Fatal Error keys, or sending Clear Fatal Error network command.
More steps, wiring diagram references, and verified part numbers
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Most common causes of ICM COMM ERROR

Ranked by how often they cause this code
  1. 1Loose or corroded wiring connector
  2. 2Damaged wiring harness
  3. 3Failed ignition control module (ICM)
  4. 4Failed IO board
  5. 5Transient power disturbance

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Questions people ask about ICM COMM ERROR

What does ICM COMM ERROR mean on a Speed Queen dryer?
It means the output board (IO board) failed to communicate with the ignition control module (ICM), the component that manages gas ignition. When this communication breakdown is detected, the control shuts off all outputs as a safety measure. The dryer will allow up to three reset attempts before locking into Machine Error Mode, which requires a deliberate reset procedure to exit.
Is it safe to use my Speed Queen dryer when the ICM COMM ERROR is showing?
No, you should not attempt to operate the dryer while this error is active. The control intentionally shuts off all outputs when the error occurs, and continuing to force operation without resolving the underlying cause could create an unsafe ignition condition in a gas dryer. Have the communication circuit between the IO board and the ICM inspected before resuming use.
Will the ICM COMM ERROR clear on its own after the dryer is unplugged?
Powering down the dryer is one of the three accepted methods to clear this error, so unplugging the unit may allow it to reset temporarily. However, if the underlying cause is a hardware failure in the ICM, IO board, or wiring, the error will return once the dryer is restarted. Repeated returns of the error after power cycling indicate a component or wiring problem that must be repaired.
Can I reset the ICM COMM ERROR myself on a Speed Queen dryer?
Yes, you can attempt a reset by powering the dryer down completely, pressing the Clear Fatal Error key combination on the control panel, or sending a Clear Fatal Error network command on commercial units. The control allows up to three self-clearing attempts before entering Machine Error Mode. If the error returns after three resets, a technician should inspect the ICM, wiring harness, and IO board before further use.
What does it cost to fix an ICM COMM ERROR on a Speed Queen dryer?
Repair costs vary depending on the root cause. If the fix is simply reseating a loose connector, costs may be limited to a service call fee, typically in the range of $75 to $150. Replacing the ignition control module or the IO board will add parts costs, with total repairs generally ranging from $150 to $400 or more depending on labor rates and parts pricing in your area.

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