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Rinnai · Combi boiler

PCL Venturi reset accepted

Normal status I-Series Plus 150K and smallerI-Series Plus 175K and higher

What the display is showing

PCL shows after the second SW2 + SW3 press in the venturi reset. At that point code 170 is cleared and the boiler goes back to normal operation.

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

What to do

  1. Reached by holding SW2 and SW3 together until P, then holding them again until PCL shows.

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
  • P Venturi reset: first screen
  • 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.