Water heater field checklist
Water heater error code checklist
Use this before ordering parts or booking service. Match the exact model
number, verify the simple checks, then price the likely parts.
Before you reset it
- Record the fault code, water temperature, gas/electric model type, and venting setup.
- Check inlet screens, condensate drain, exhaust obstruction, and water-flow demand.
- For ignition and flame faults, inspect the igniter, flame rod, gas supply, and vent path.
- For temperature faults, check the thermistor or temperature sensor before replacing a board.
Parts worth pricing
When to stop
Stop for gas odor, flue blockage, carbon-monoxide concerns, scorching, or any combustion fault that returns after reset.
