Error code reference

Honeywell Water Heater Error Code 0 Flashes

Control is off or pilot is out.

SourceHoneywell Gas Water Heater - Service Manual: FVIR (GPX, GS6, GSX)p. 10

Honeywell codes Honeywell water heater codes

Diagnostic procedure

The full 0 Flashes 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

Follow the lighting instructions on the front of the water heater and attempt to relight the pilot. Confirm that the pilot is lit by looking through the viewport.

SourceHoneywell Gas Water Heater - Service Manual: FVIR (GPX, GS6, GSX)p. 10

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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 Honeywell water heater.

Models covered by the manuals that document this code

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The full 0 Flashes procedure

Where this code is documented

Models covered by the manuals that document this code

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