Rinnai RH180 Installation Fundamentals page 52

Maintenance Codes
Code Definition
10 Air supply or
cont. exhaust blockage.
11 No Ignition.
12 No Flame.
52
Remedy
Licensed
Ensure listed 4" B-vent material is used and there are no reductions in the vent
professional
system.
only
Check fan for blockage.
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.
Check that the gas is turned on at the water heater, gas meter, or cylinder.
Ensure the appliance is properly grounded.
Licensed
Ensure gas type and pressure is correct.
professional
Ensure gas line, meter, and/or regulator is sized properly.
only
Bleed all air from the gas line.
Verify dip switches are set properly.
Ensure igniter is operational. (check igniter wiring harness for damage.)
Check gas solenoid valves for open or short circuits.
Remove burner cover and ensure all burners are properly seated.
Remove burner plate and inspect burner surface for condensation or debris.
Check that the gas is turned on at the water heater, gas meter or cylinder.
Check for obstructions in the flue outlet.
Ensure the appliance is properly grounded.