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Rinnai · Combi boiler

P Venturi reset: first screen

Menu / mode display I-Series Plus 150K and smallerI-Series Plus 175K and higher

What the display is showing

Letter P shows on the display when SW2 and SW3 on the PC board are held together during the venturi reset used for code 170. It is the first step; holding both buttons again goes on to PCL.

Applies to: Rinnai I-Series Plus boilers and combis (150K and smaller, 175K and higher)

What to do

  1. Press SW2 and SW3 together until P appears.
  2. Hold SW2 and SW3 together a second time until PCL appears.

Models that show this code

8 models in I-Series Plus 150K and smaller, I-Series Plus 175K and higher

IP060160CIP090099CIP090160CIP090199CIP120199CIP150199CIP175199CIP199199C

Other codes on the same units

  • SW1-SW3 PC board buttons (SW1, SW2, SW3)
  • ECL Reset complete (gas solenoid circuit)
  • FFF Maintenance performed marker
  • LC Lime condition – flush plate heat exchanger
  • PCL Venturi reset accepted
  • Parameter mode Parameter settings menu
  • Perf data Performance data menu
  • SS Service Soon reminder

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Source: Rinnai Troubleshooting I-Series Plus Diagnostic Codes (800000375), Code 170 step 7 p.13. Summarized in our own words; check the original manual for your model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.