Rinnai RH180 Installation Fundamentals page 53

Maintenance Codes
Code Definition
12 No Flame.
cont.
13 Combustion.
53
Remedy
Licensed
Ensure gas line, meter, and/or regulator is sized properly.
professional
Ensure gas type and pressure is correct.
only
Bleed air from the gas lines.
Ensure vent length, vent size and combustion air comply with the requirements
stated in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas
and Propane Installation Code, CSA B149.1.
Verify dip switches are set properly.
Check power supply for loose connections.
Check power supply for proper voltage and voltage drops.
Ensure flame rod wire is connected.
Check flame rod for carbon buildup.
Disconnect and reconnect all wiring harnesses on unit and PC Board.
Check for DC shorts at components.
Check gas solenoid valves for open or short circuits.
Remove burner plate and inspect burner surface for condensation or debris.
Review items listed under codes "05" and "10".