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Error code reference
Bradford White Water Heater Error Code 10 flashes red (V2)
Abnormal combustion chamber temperature profile during heating cycle; insufficient combustion air.
SourceBradford White Ultra Low NOx Water Heaters - Service Manual: ECO Defender Seriesp. 9
Diagnostic procedure
The full 10 flashes red (V2) 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
Clean all combustion air intakes to the appliance. Clean the burner. Remove all obstacles that may restrict air flow to the burner. Replace gas control.
SourceBradford White Ultra Low NOx Water Heaters - Service Manual: ECO Defender Seriesp. 9
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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