Rinnai Error Code 180: Gas valve air/fuel adjustment limit reached (Boiler)
Rinnai error code 180 on a boiler means: Gas valve air/fuel adjustment limit reached. It is also called Rinnai diagnostic code 180.
Homeowner? What Rinnai code 180 means for you
Call a technician Your boiler is reporting: Gas valve air/fuel adjustment limit reached. The boiler has locked out or cannot run properly. One reset is fine; if the code comes back, it needs a licensed technician to find the cause.
Safe things you can check yourself
- Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
- Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
- Look at the pressure gauge on the boiler. If it reads much lower than usual or near zero, or water is leaking, call a technician.
- Outside, make sure the intake and exhaust pipes or vent cap are not blocked by snow, ice, leaves or a nest.
- Check that the boiler gas valve is open (handle in line with the pipe).
- Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Rinnai error code 180 mean?
The Smart-Sense gas valve has hit its gas-rich or gas-lean adjustment limit, which is restricted by gas type. In normal operation the limits shouldn't be reached.
Applies to: I-Series Plus boilers — 150K BTU and smaller (Combi and Solo)
Common causes of Rinnai code 180
- Incorrect gas supplied
- Parameter A0 gas type set wrong
- Incorrect gas valve parameters entered
A technician checks these and 1 other possible causes on site before replacing any part.
Rinnai models that use code 180
Other Rinnai Boiler codes
All Rinnai Boiler error codes →
Rinnai code 180: homeowner questions
What does Rinnai code 180 mean?
Gas valve air/fuel adjustment limit reached. The Smart-Sense gas valve has hit its gas-rich or gas-lean adjustment limit, which is restricted by gas type. In normal operation the limits shouldn't be reached.
Is it safe to keep using my boiler with code 180?
It depends on the cause. The boiler has locked out or cannot run properly. One reset is fine; if the code comes back, it needs a licensed technician to find the cause.
Can I reset Rinnai code 180 myself?
You can try one reset (power off for 30 seconds, then on). If Rinnai code 180 comes back, the cause is still there and a licensed technician should check it.
Who can fix Rinnai code 180 near me?
Aurora Star Tech Inc. repairs Rinnai boilers in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: Boiler Not Heating: What to Check
Troubleshooting guides
- No heat or some zones cold All brands · Boiler
Source: Rinnai Troubleshooting I-Series Plus Boiler Diagnostic Codes (800000375), p.13. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.