Error code reference

Maytag Microwave Error Code Err9

Over temperature condition with current less than 2 amps.

SourceMaytag Commercial Microwave - Tech Sheet: Component Testing (AMH20AD2, MMH20AD2)p. 8

Diagnostic procedure

The full Err9 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check Thermal Limiter, check Triac (TR2), confirm Relay (K3) cycles (Convection HTR), check RTD, check oven temperature.

SourceMaytag Commercial Microwave - Tech Sheet: Component Testing (AMH20AD2, MMH20AD2)p. 8

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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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Where this code is documented

3 manuals in the MyPros+ library document this code for Maytag microwave.

Models covered by the manuals that document this code

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The full Err9 procedure

Where this code is documented

Models covered by the manuals that document this code

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