Skip to main content
Error code reference
Bradford White Water Heater Error Code 1 flash/sec
Weak pilot signal on last call for heat.
SourceBradford White UPV75 - Service Manual: Ultra Low NOx Power Vent 75 Gallonp. 13
Diagnostic procedure
The full 1 flash/sec 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 for unstable pilot, blocked/restricted pilot tube, oxidation build up on pilot electrode, or wire damage to pilot assembly.
SourceBradford White UPV75 - Service Manual: Ultra Low NOx Power Vent 75 Gallonp. 13
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock 1 flash/sec procedure $9.95
Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.
Where this code is documented
1 manual in the MyPros+ library documents this code for Bradford White water heater.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
Get Started$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax