Fault codes / RV water heater / SPARK, NO GAS

RV water heater: Spark, no gas

What it means: Gas not getting to the burner.

What to check

11 in. W.C. with 2+ appliances running; 10.5 VDC minimum; blocked burner tube or orifice; loose ECO or solenoid wires; dirty edge connector; bad ECO, valve or board.

Learn the system

• Tank water heaters
• Tankless water heaters
• Water heater gas side

Practice it on a service call

• No hot water on electric
• Water heater lights, then goes out
• Water heater lights then faults

Guided diagnosis

• Water Heater

Other RV water heater codes

• RV water heater: Gas, no spark Ignition side
• RV water heater: Gas and spark, still locks out Flame not being proven

Full field guide: Suburban and Atwood tank water heater

Codes come from the maker manuals and public service sheets. Your model's own chart always wins, and LP and 120 volt work belongs to a qualified technician.