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Error code reference

Speed Queen Dryer Error Code AIR FLOW 2 ERROR

Air flow switch failed to close within 5 seconds after fan reached 90% rated speed when cycle started/restarted.

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What the AIR FLOW 2 ERROR error code actually means

Your Speed Queen dryer detected that not enough air was moving through the exhaust system when the dryer started. This is usually caused by a clogged or blocked vent duct, or by a small sensor inside the dryer that monitors airflow not working correctly. The dryer stopped as a safety precaution to prevent overheating.

Diagnostic procedure

The full AIR FLOW 2 ERROR procedure

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1
First diagnostic step
After 3 failed attempts, control goes to cool down. Clear error by any key press, opening loading door, or cycling power. Check air flow switch and exhaust duct for blockage.
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Most common causes of AIR FLOW 2 ERROR

Ranked by how often they cause this code
  1. 1Blocked or clogged exhaust duct
  2. 2Kinked or crushed flexible exhaust hose
  3. 3Failed air flow switch
  4. 4Faulty wiring or connection to the air flow switch
  5. 5Blower wheel obstruction or failure

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Questions people ask about AIR FLOW 2 ERROR

What does AIR FLOW 2 ERROR mean on a Speed Queen dryer?
The AIR FLOW 2 ERROR means the dryer's air flow switch did not close within 5 seconds after the fan motor reached 90% of its rated speed at cycle start or restart. This tells the control board that adequate airflow through the exhaust system was not detected. The dryer will attempt the cycle three times before switching to cool-down mode and locking out further attempts until the error is cleared.
Is it safe to keep using the dryer with an AIR FLOW 2 ERROR?
No, it is not safe to continue running the dryer while this error is active. The error exists specifically to protect against operating with insufficient exhaust airflow, which can cause overheating and create a fire risk. The dryer's control system will shift to cool-down mode after three failed attempts, and the underlying cause should be diagnosed and resolved before resuming normal use.
How much does it cost to repair an AIR FLOW 2 ERROR on a Speed Queen dryer?
If the cause is simply a blocked exhaust duct, cleaning it yourself costs little to nothing. Professional duct cleaning services typically range from $75 to $150 depending on your area. If the air flow switch itself needs to be replaced, expect to pay between $20 and $60 for the part, plus labor costs of $80 to $150 if a technician performs the repair.
Can I fix the AIR FLOW 2 ERROR myself?
In many cases, yes. Start by inspecting and cleaning the full exhaust duct from the back of the dryer to the exterior vent cap, as lint blockages are the most common cause. Also check that the flexible transition hose is not kinked or crushed behind the unit. If the ductwork is clear, the air flow switch or its wiring connections may need to be inspected, which requires accessing the interior of the dryer.
Will resetting the dryer clear the AIR FLOW 2 ERROR permanently?
Resetting the error by pressing any key, opening the door, or cycling power will clear the fault code and allow the dryer to attempt another cycle. However, if the root cause of the restricted or undetected airflow has not been addressed, the error will return once the dryer tries to start again. A permanent fix requires resolving the underlying issue, such as clearing a duct blockage or replacing a defective air flow switch.

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