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Error code reference

Speed Queen Dryer Error Code AIR FLOW ERROR

Five air flow switch bounces occurred within 5 minutes during a cycle; heat turned off for remainder of cycle.

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What the AIR FLOW ERROR error code actually means

Your Speed Queen dryer detected that air wasn't flowing properly through the exhaust system enough times in a short period, so it shut off the heat to keep the dryer from getting too hot. The dryer may still tumble, but it won't produce heat until the issue is resolved and the error is cleared. Check your lint screen and make sure the exhaust vent hose isn't kinked or blocked.

Diagnostic procedure

The full AIR FLOW ERROR procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Clear error by any key press, opening loading door, or cycling power. Inspect air flow switch and exhaust ductwork.
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Most common causes of AIR FLOW ERROR

Ranked by how often they cause this code
  1. 1Clogged or blocked exhaust ductwork
  2. 2Clogged lint screen
  3. 3Exhaust duct run too long or with too many bends
  4. 4Faulty or out-of-calibration air flow switch
  5. 5Blocked or malfunctioning exterior vent flap

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Questions people ask about AIR FLOW ERROR

What does AIR FLOW ERROR mean on a Speed Queen dryer?
The AIR FLOW ERROR means the dryer's air flow switch bounced, or toggled between open and closed, five or more times within a five-minute period during a cycle. This signals that exhaust airflow was inconsistent or insufficient during operation. As a safety response, the dryer disables the heating element for the rest of the cycle to prevent overheating. The drum may continue to tumble, but no heat will be produced until the error is cleared and the cause is addressed.
Is it safe to run my Speed Queen dryer when it shows an AIR FLOW ERROR?
The dryer does shut off the heat automatically when this error occurs, which reduces the immediate risk of overheating. However, continuing to run the dryer without addressing the cause is not advisable. Poor exhaust airflow increases drying times, stresses the motor, and can create a lint fire hazard over time if duct buildup is the root cause. Resolve the exhaust system issue before resuming normal use.
How much does it cost to repair an AIR FLOW ERROR on a Speed Queen dryer?
If the fix is simply cleaning the lint screen or clearing a blocked duct, there may be little to no cost beyond your time. Professional duct cleaning typically runs in the range of $75 to $175 depending on duct length and access. If the air flow switch itself needs replacement, parts and labor together generally fall in the range of $100 to $250, depending on your location and service rates.
Will resetting the dryer clear the AIR FLOW ERROR?
Yes, you can clear the error by pressing any key on the control panel, opening the loading door, or cycling power to the dryer. However, clearing the error does not fix the underlying cause. If the exhaust restriction or switch problem is not corrected, the error will return during the next cycle once the air flow switch bounces five times again.
How do I fix an AIR FLOW ERROR on a Speed Queen dryer?
Start by clearing the error, then clean the lint screen thoroughly and inspect the exhaust duct from the dryer to the exterior termination point. Look for kinks, crushes, or lint accumulation inside the duct, and confirm that the exterior vent flap opens freely when the dryer runs. If the duct and screen are clear and the error keeps returning, the air flow switch may need to be tested and replaced by a technician.

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