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Error code reference
Sub-Zero Freezer Error Code E3
Communication error between control board and control panel (base units only).
SourceSub-Zero Freezer - Service Manual: Integrated (700-2) Seriesp. 3-42, 8-26
Diagnostic procedure
The full E3 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 control cable and connections between control panel and Methode connector on back duct. Check wiring from Methode connector to electronic control board.
SourceSub-Zero Freezer - Service Manual: Integrated (700-2) Seriesp. 3-42, 8-26
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 Sub-Zero freezer.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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