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Error code reference

Maytag Dryer Error Code 18

Motor thermal protector opened more than 5 times during cycle.

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Motor thermal protector opened more than 5 times during cycle.

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What 18 means on a Maytag dryer

Error code 18 on a Maytag dryer means the control board detected that the motor thermal protector opened and reset more than 5 times within a single drying cycle. The motor thermal protector is a safety device built into the drive motor that trips when the motor overheats, cutting power to prevent damage. The control board tracks how often this happens, and when it exceeds 5 trips in one cycle, it locks out operation and stores code 18. This pattern points to a sustained overheating condition rather than a one-time event.

For homeowners, think of the motor thermal protector as a circuit breaker inside the motor itself. When the motor runs too hot, this protector shuts it off temporarily to prevent a burnout. Under normal conditions, it might trip once and reset without issue. When it trips 5 or more times back-to-back in a single cycle, something is forcing the motor to work harder than it should, or the motor itself is failing. Common culprits are restricted airflow from a clogged lint system, a worn drum bearing or glide that creates mechanical drag, a failing drive motor that overheats under normal load, or a blower wheel obstructed by debris. Addressing this code promptly matters because repeated thermal trips accelerate motor wear and can lead to a complete motor failure.

Source: manufacturer service documentation.

Common causes of 18

  1. 01

    Clogged lint screen, exhaust duct, or vent system

    Wiring / connection

    Restricted airflow forces the motor to work harder to maintain drum rotation and blower function, generating excess heat that repeatedly trips the thermal protector. Check the lint screen, internal ducting, and the exterior vent termination for blockages before assuming a parts failure.

  2. 02

    Worn drum glides, seals, or bearing

    Part replacement

    Worn drum support components create mechanical friction and drag that increases the load on the drive motor, causing it to overheat repeatedly during a cycle. Inspecting and replacing drum glides, the rear drum bearing, or the drum seal will reduce motor strain.

  3. 03

    Obstructed or seized blower wheel

    Part replacement

    A blower wheel clogged with lint or debris, or one that has slipped on its shaft, reduces airflow and increases the mechanical load on the motor simultaneously, triggering repeated thermal protector trips. The blower wheel must be cleared or replaced.

  4. 04

    Failing or end-of-life drive motor

    Part replacement

    A drive motor with worn windings or degraded internal insulation will overheat under normal operating loads, causing the built-in thermal protector to trip repeatedly even when airflow and mechanical drag are within spec. A motor showing this behavior typically requires replacement.

See the test procedure for each cause

Frequently asked questions about 18

What does error code 18 mean on a Maytag dryer?
Error code 18 means the dryer's control board recorded the motor thermal protector opening and resetting more than 5 times during a single cycle. The thermal protector is a safety device inside the drive motor that shuts the motor off when it overheats. Triggering it more than 5 times signals a persistent overheating problem, either from restricted airflow, mechanical drag on the drum, a blocked blower wheel, or a motor that is beginning to fail.
Is it safe to keep using my Maytag dryer with error code 18?
No, you should not continue running the dryer with code 18 active. The motor thermal protector is tripping repeatedly because the motor is overheating, and continuing to operate the dryer risks permanent motor failure or, in a worst case, a fire if the root cause involves blocked airflow and accumulated lint. Stop using the dryer until you identify and correct the underlying problem.
How do I fix error code 18 on a Maytag dryer?
Start by cleaning the lint screen, the full length of the exhaust duct, and the exterior vent termination. If airflow is clear, inspect the drum for binding by rotating it by hand with the dryer unplugged; it should spin with light, even resistance. Check the blower wheel for lint buildup or damage. If none of those steps resolve the issue, the drive motor likely needs replacement, which is a moderate-difficulty repair requiring disassembly of the dryer cabinet.
How much does it cost to repair error code 18 on a Maytag dryer?
If the fix is a vent cleaning or clearing a blocked blower wheel, costs are minimal, typically under 30 dollars in supplies if you do it yourself. A drum glide or seal kit runs roughly 20 to 50 dollars in parts and is a manageable DIY repair. A replacement drive motor is the most expensive scenario, with parts ranging from 80 to 200 dollars depending on the model, plus 100 to 200 dollars in labor if you use a technician. Diagnosing the root cause before ordering parts avoids unnecessary expense.
Can cleaning the dryer vent fix error code 18 on a Maytag dryer?
Yes, a clogged vent is one of the most common reasons code 18 appears, and clearing it can resolve the error entirely. Restricted exhaust airflow traps heat inside the drum and forces the motor to work harder, which triggers the thermal protector repeatedly. Clean the lint screen, the duct from the dryer to the wall, and the exterior vent cap. If the code returns after a thorough cleaning, the problem lies with a mechanical component or the motor itself.

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