Error code reference

Wolf Warming Drawer Error Code 40

Element Sensing - Less than 3°C (5°F) change in temperature over 10 minutes of continuous call for heat; occurs only during preheat mode with door closed.

SourceWolf Service Manual: ICB WWD30: Service Manual3-12 / 5-3

Diagnostic procedure

The full 40 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
1
First diagnostic step
If unit is outdoors and temperature is below freezing point, instruct on unit limitations. Verify Thermal Cutout is not open. Verify Element is not open. Replace TCO or Element if open.

SourceWolf Service Manual: ICB WWD30: Service Manual3-12 / 5-3

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

6 manuals in the MyPros+ library document this code for Wolf warming drawer.

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