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Error code reference
Whirlpool Microwave Error Code No Display
Thermal fuse, Copernicus Appliance Manager, or User Interface failure causing blank control.
SourceWhirlpool Microwave - Tech Sheet: Service Diagnostics & Error Codesp. 4
Diagnostic procedure
The full No Display 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
Check wiring from main line to Copernicus Appliance Manager; check connection from wiring harness to User Interface (J4); measure 14 VDC at J4-2 to J4-4.
SourceWhirlpool Microwave - Tech Sheet: Service Diagnostics & Error Codesp. 4
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 Whirlpool microwave.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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