Rinnai RH180 Installation Manual download pdf (Page 35)

RH180 Manual 35

Diagnosc Codes and Remedies

Code Denion Remedy

05 Air Filter Error

Follow the procedure “Air Screen Inspecon, Detecon & Cleaning” in this manual. If

the error code connues to ash aer cleaning the air lter, review the items in

“Code 10” or contact a qualied service technician.

07 Circulaon Flow Rate

Has Dropped Below

2.1gpm

Check water lter for blockage

Check pump operaon and wiring

Clean Heat Exchanger

10 Air Supply or Exhaust

Blockage

Check that nothing is blocking the vent, inlet screen or “Combuson Air Assembly”

Check all vent components for proper connecons.

licensed

professional

only

Ensure listed 4” b-vent is used and there are no reducons in the vent system

Check fan for blockage

Ensure vent length, vent size and combuson air comply with the requirements

stated in the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and

Propane Installaon Code, CSA B149.1.

11 No Ignion

Check that the gas is turned on at the water heater, gas meter, or cylinder.

Ensure appliance is properly grounded.

licensed

professional

only

Ensure gas type and pressure is correct.

Ensure gas line, meter, and/or regulator is sized properly.

Bleed all air from gas lines.

Verify dip switches are set properly.

Ensure igniter is operaonal.

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 condensaon or debris.

12 No Flame

Check that the gas is turned on at the water heater, gas meter, or cylinder.

Check for obstrucons in the ue outlet.

Ensure appliance is properly grounded.

licensed

professional

only

Ensure gas line, meter, and/or regulator is sized properly.

Ensure gas type and pressure is correct.

Bleed all air from gas lines.

Ensure vent length, vent size and combuson air comply with the requirements

stated in the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and

Propane Installaon Code, CSA B149.1.

Verify dip switches are set properly.

Check power supply for loose connecons.

Check power supply for proper voltage and voltage drops.

Ensure ame rod wire is connected.

Check ame rod for carbon build-up.

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 condensaon or debris.

13 Combuson Review items liste under codes “05” and “10”.

FE Flammable Vapors

Detected

 Leave the area immediately, leaving the exit point open to allow venlaon

 Do not touch any electric device (including phone or light switch)

 Call emergency personnel from a neighbors phone

 Do not try to reset the water heater or light the pilot to any other appliance

When safety personnel have idened the area as safe and all ammable vapors

have been removed and eliminated, the units can be reset by unplugging the unit

then plugging back in.

If “FE” connues to ash aer area is determined to be free from ammable vapors,

contact a qualied service technician.

Some of the checks below should be done by a licensed professional. Consumers

should never aempt any acon that they are not qualied to perform.

WARNING

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Rinnai RH180 Installation Manual Page 35

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