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Error code reference

Maytag Dryer Error Code 20

Dryer over temperature without shutdown.

Maytag codesMaytag dryer codes

Dryer over temperature without shutdown.

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What 20 means on a Maytag dryer

Error code 20 on a Maytag dryer indicates the control board detected an over-temperature condition in the drum or exhaust airflow without a corresponding safety shutdown occurring through the thermal limiter or hi-limit thermostat. The control is seeing heat levels exceed normal operating thresholds while the primary safety cutouts have not yet tripped. This points to a failure in the thermal regulation system, most commonly a restricted exhaust duct, a failed cycling thermostat, or a partially blocked lint path that is allowing heat to accumulate beyond design limits.

For homeowners, this means your dryer is getting hotter than it should during a cycle, and the part that is supposed to regulate that heat is not doing its job correctly. Lint buildup in the vent duct is the most frequent cause and the first thing to check. A clogged vent traps heat inside the drum and exhaust path, which drives temperatures up. If the vent is clear, the cycling thermostat or heating element may be at fault.

Left unaddressed, an over-temperature condition is a fire risk. Do not continue running the dryer until the root cause is identified and corrected.

Source: manufacturer service documentation.

Common causes of 20

  1. 01

    Clogged or kinked exhaust vent duct

    Wiring / connection

    Lint accumulation or a crushed duct restricts airflow, trapping heat inside the dryer. This is the most common trigger for an over-temperature condition and requires no parts to fix if the duct itself is undamaged.

  2. 02

    Failed cycling thermostat

    Part replacement

    The cycling thermostat regulates drum temperature by cycling the heating element on and off. If it fails in the closed position, it never signals the element to shut off, allowing temperatures to climb continuously until error code 20 is triggered.

  3. 03

    Heating element grounded to housing

    Part replacement

    A heating element with a broken coil touching the element housing can cause the element to run continuously regardless of thermostat signals, producing sustained over-temperature conditions.

  4. 04

    Faulty control board

    Part replacement

    If the control board is misreading temperature sensor input or failing to cut power to the heating circuit when temperatures rise, it can both cause and fail to respond to an over-temperature event. This is the least common cause and should only be suspected after the thermostat, element, and vent path have been ruled out.

See the test procedure for each cause

Frequently asked questions about 20

What does error code 20 mean on a Maytag dryer?
Error code 20 means the dryer's control board detected an over-temperature condition without a safety shutdown from the thermal limiter or hi-limit thermostat. In simple terms, the dryer is running hotter than it should and the system that is supposed to regulate heat is not functioning correctly. The most common causes are a clogged exhaust vent, a failed cycling thermostat, or a grounded heating element.
Is it safe to keep using my Maytag dryer with error code 20 active?
No. An active error code 20 indicates the dryer is reaching unsafe temperatures, which is a fire hazard. Do not run the dryer until you have identified and corrected the cause. Start by checking that the exhaust duct is fully clear and unkinked from the dryer to the exterior wall termination. If the vent is clear and the code returns, stop using the dryer until the cycling thermostat or heating element has been inspected and replaced as needed.
How do I fix error code 20 on a Maytag dryer?
Begin by disconnecting the dryer and thoroughly cleaning the entire exhaust vent path, including the duct behind the dryer, the wall duct, and the exterior vent cap. Reconnect and run a test cycle. If code 20 returns, the next step is testing the cycling thermostat for continuity with a multimeter. A thermostat that reads open when at room temperature is defective and needs replacement. If the thermostat tests good, inspect the heating element for grounded coils.
How much does it cost to fix error code 20 on a Maytag dryer?
If a clogged vent is the cause, the fix is free aside from any cleaning tools. A replacement cycling thermostat typically costs $10 to $30 for the part, and the repair is a moderate DIY job requiring a multimeter and basic hand tools. A replacement heating element runs $20 to $60 depending on the model. If the control board is at fault, parts alone can reach $100 to $200, at which point professional diagnosis is worth the cost to confirm the board is actually defective before purchasing it.
Will clearing the error code 20 fix my Maytag dryer?
Clearing the code without fixing the underlying cause will only result in the code returning during the next cycle. The control board will continue detecting the over-temperature condition as long as the root problem exists. Fix the cause first, then clear the code by cycling power to the dryer at the breaker for 30 seconds.

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