Error code reference

Sub-Zero Freezer Error Code 86

Serial communication failure between VS compressor controller and electronic control board (700TF/I-2V only).

SourceSub-Zero Freezer - Service Manual: Integrated (700-2) Seriesp. 3-24, 8-5

Diagnostic procedure

The full 86 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

If not experiencing cooling problems, clear error code. If cooling problems exist, check serial communication wire leads for proper connection orientation at control board and VS compressor controller.

SourceSub-Zero Freezer - Service Manual: Integrated (700-2) Seriesp. 3-24, 8-5

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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

4 manuals in the MyPros+ library document this code for Sub-Zero freezer.

Models covered by the manuals that document this code

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The full 86 procedure

Where this code is documented

Models covered by the manuals that document this code

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