Error code reference

York Furnace Error Code 8 Flash

Flame rectification has been lost 5 times during 1 call for heat after it was recognized by the control.

SourceYork P*XU/G9D-UP Furnace - Full Service Manualp. 8

Diagnostic procedure

The full 8 Flash 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

Check for restricted vent system, blocked or restricted condensate drain, or foreign objects in the inducer housing.

SourceYork P*XU/G9D-UP Furnace - Full Service Manualp. 8

Unlock with pass

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 York furnace.

Models covered by the manuals that document this code

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The full 8 Flash procedure

Where this code is documented

Models covered by the manuals that document this code

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