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Error code reference

Speed Queen Dryer Error Code PAYMENT SYSTEM COMM ERROR

Communication error occurred with the Serial Payment System

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What the PAYMENT SYSTEM COMM ERROR error code actually means

This error means the dryer's control system has lost contact with the payment hardware, such as a coin acceptor or card reader. The machine cannot confirm the payment system is working properly, so it may stop accepting new cycles until the connection is restored. This is a commercial dryer issue and is not something that would appear on a residential Speed Queen unit.

Diagnostic procedure

The full PAYMENT SYSTEM COMM ERROR procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check payment system connections. Machine returns to previous state once communications are restored.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of PAYMENT SYSTEM COMM ERROR

Ranked by how often they cause this code
  1. 1Loose or disconnected wiring connector
  2. 2Corroded or damaged connector pins
  3. 3Failed payment system module
  4. 4Damaged serial communication wiring
  5. 5Temporary power disruption

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Questions people ask about PAYMENT SYSTEM COMM ERROR

What does PAYMENT SYSTEM COMM ERROR mean on a Speed Queen dryer?
This error means the dryer has detected a communication failure between its main control board and the Serial Payment System, such as a coin acceptor or card reader. On Type 1 machines, the error displays for 2 seconds and the machine continues operating. On Type 2 machines, codes 11, 18, or 19 trigger Machine Error Mode, preventing operation until communications are restored.
Will resetting the dryer clear the PAYMENT SYSTEM COMM ERROR?
A power reset may temporarily clear the fault on a Type 1 machine if the disruption was caused by a brief power fluctuation. However, on Type 2 machines, the dryer will remain in Machine Error Mode regardless of resets until the actual serial communication link with the payment system is physically restored. Resetting will not resolve a failed module or damaged wiring.
How much does it cost to repair a PAYMENT SYSTEM COMM ERROR on a Speed Queen dryer?
If the fix is simply reseating a loose connector, there may be no parts cost, though a service call from a commercial appliance technician typically runs in the range of $75 to $150. If the payment system module needs replacement, parts and labor combined can range from $150 to $400 or more depending on the specific payment hardware installed. Wiring harness repairs fall somewhere in between depending on the extent of the damage.
How do I fix a PAYMENT SYSTEM COMM ERROR on a Speed Queen dryer?
Start by inspecting all wiring connections between the payment module and the control board, ensuring every connector is fully seated and free of corrosion. If connections appear sound, check the serial communication wiring for damage along its full length. If the wiring and connectors are in good condition, the payment system module itself may need to be replaced.
Is it safe to use the dryer when it shows a PAYMENT SYSTEM COMM ERROR?
The error relates to communication with the payment hardware, not to the dryer's heating or mechanical systems, so there is no immediate safety risk associated with the fault itself. On Type 2 machines, the dryer will refuse to operate in Machine Error Mode, which prevents use until the issue is corrected. A Type 1 machine may continue running, but the underlying communication problem should still be diagnosed promptly.

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