Rinnai 12 Error Code: No flame

The flame did not establish or went out. The manual lists confirming the gas is on, that the propane tank has gas, that the flame rod wire is connected, and correct gas type and pressure.

Is it safe to keep running? Check the steps below first. If the code returns, call a licensed gas technician. Flame rod and gas pressure checks are not for homeowners.

🛑 Stop and call a licensed pro if

• If the code returns, call a licensed gas technician. Flame rod and gas pressure checks are not for homeowners.
• You smell gas. Leave the house, do not touch switches, and call your gas utility from outside.
• Codes for flame failure, overheating, venting or the control board that return after one reset.
• Water leaking from the heater, the relief valve discharging, or scorching around the burner area.
• A carbon monoxide alarm sounds. Get everyone outside and call 911 or the fire department.

Safe first steps for any Rinnai code

1. Write down the exact code shown on the controller or the number of status light flashes.
2. Turn the water heater power off and back on (or press the reset button the manual describes) once. If the code comes back, stop resetting.
3. Make sure the gas supply valve to the heater is open and other gas appliances in the home are working.
4. Make sure the cold water supply valve is fully open and hot water taps are not partly closed.
5. Look at the outside vent terminal for snow, ice, leaves or anything blocking it (look only).

Ryan Giles · Red Seal Certified Plumber · Ask a plumber · Ask an HVAC technician