Error code reference

Dacor Oven Error Code U40

Upper/single relay board wiggler failure - comparator circuit to verify command states between logic and relay boards has failed.

SourceDacor Discovery Wall Oven - Full Service Manualp. 9-19

Dacor codes Dacor oven codes

Diagnostic procedure

The full U40 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 communication lines, make sure all contacts are touching and plugged in correctly. Replace relay board.

SourceDacor Discovery Wall Oven - Full Service Manualp. 9-19

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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

1 manual in the MyPros+ library documents this code for Dacor oven.

Models covered by the manuals that document this code

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The full U40 procedure

Where this code is documented

Models covered by the manuals that document this code

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