Troubleshooting guide
RV water heater has no heat or lockout light
Use this for Suburban, Dometic/Atwood, or Furrion water heater lockout/no-heat conditions.
Use this atlas to identify likely meaning and prepare for service. Shut off power, LP gas, fuel, or water when a listed appliance condition involves flame, gas smell, exhaust, generator shutdown, high temperature, moving jacks/slides, refrigerant, 120 VAC, control boards, repeated ignition failure, or a persistent lockout. Call the appliance maker, RV dealer, or a qualified RV technician for repair.
Owner-safe checklist
- Turn the appliance off.
- Confirm the tank is full for tank models.
- Do not repeatedly reset flame, ECO, thermal cut-off, or over-temperature faults.
Code tables for these appliances
- Furrion tankless water heaters 12 codes
Related fault codes
- Dometic water heater: Lock-Out Lamp
- Furrion water heater code E0
- Furrion water heater code E1
- Furrion water heater code E2
- Furrion water heater code E3
- Furrion water heater code E4
- Furrion water heater code E6
- Furrion water heater code E7
- Furrion water heater code E9: Flame sensed before ignition
- Suburban water heater: RESET light
Official sources
Suburban/AtwoodSuburban Tank Water Heaters Operation & Maintenance GuideDometicDometic WH-6GA/WH-6GEA/WH-9GEA L.P. Gas Water Heater ManualFurrionFurrion 2.4GPM Tank-less Gas Water Heater Troubleshooting and Service ManualDometicDometic Gas/Electric Combination Function Information | Water Heaters - Combo Gas & Electric | SupportDometicDometic Gas Function | Water Heaters - Gas | SupportDometicDometic How to Clear a Water Heater Over-Heating Failure | SupportDometicDometic How to Clear a Water Heater Over-Heating Failure | Water Heaters - Gas | SupportDometicDometic How to Operate Your Water Heater | On Demand Water Heater (OD-5001) | SupportDometicDometic There Is No Ignition When Water Is On (Power Vent Fan Is Running) | OD-5001 | SupportSuburban/AtwoodSuburban Tankless Water Heaters Operation & Maintenance Guide Models IW60 and IW60RLSuburban/AtwoodSuburban ST-42 and ST-60 On Demand Water Heater User ManualFurrionFurrion 2.4GPM Tankless Gas Water Heater User Manual CCD-0005507
Plus 5 more official sources.