Boiler Error Codes and Repair Guides
Boiler fault-code lookups, safe reset checks, pressure and ignition troubleshooting, and replacement-part decision guides.
Common boiler fault patterns
- Ignition lockouts, flame-signal faults, rollout switches, and blocked condensate drains.
- Low-water, pressure, pump, expansion tank, and flow-switch errors.
- Control-board, gas valve, sensor, and venting problems that decide repair versus replacement.
Boiler repair decision checks
- Match the fault code to the boiler family before clearing lockout history.
- Confirm venting, water pressure, and condensate path before ordering ignition parts.
- Use replacement quotes when the heat exchanger, gas train, or repeated safety lockouts are involved.
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