Rinnai Error Code SEt: Initial settings not yet confirmed (Tankless)
Rinnai error code SEt on a tankless water heater means: Initial settings not yet confirmed. It is also called Rinnai diagnostic code SEt.
Homeowner? What Rinnai code SEt means for you
Usually minor Your tankless water heater is reporting: Initial settings not yet confirmed. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.
Safe things you can check yourself
- Check that gas reaches the house: other gas appliances work, or the propane tank is not empty.
- Make sure the heater is plugged in and its breaker is on. In winter, keep the power on: it protects the unit from freezing.
- Outside, make sure the intake and exhaust pipes or vent cap are not blocked by snow, ice, leaves or a nest.
- Check that the hot and cold water valves under the heater are fully open.
- If you have a remote controller, turn it off and on once. If the code comes back, call a technician.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Rinnai error code SEt mean?
Shown on first power-up of a SENSEI RX/CX unit, which ships configured for natural gas and indoor installation. The installer must confirm or change the initial settings before the heater is used.
Applies to: SENSEI RX/CX series only
Common causes of Rinnai code SEt
- Unit powered up for the first time
- Factory default settings (natural gas, indoor) not yet confirmed by the installer
- Initial settings need to be changed to match the actual installation
Rinnai models that use code SEt
CX160iCX199iCXP160iCXP199iRX130iRX160iRX180iRX199iRXP160iRXP199i
Other Rinnai Tankless codes
All Rinnai Tankless Water Heater error codes →
Rinnai code SEt: homeowner questions
What does Rinnai code SEt mean?
Initial settings not yet confirmed. Shown on first power-up of a SENSEI RX/CX unit, which ships configured for natural gas and indoor installation. The installer must confirm or change the initial settings before the heater is used.
Is it safe to keep using my tankless water heater with code SEt?
Usually yes. Code SEt is normally minor, but if it keeps coming back have it checked.
Can I reset Rinnai code SEt myself?
You can try one reset (power off for 30 seconds, then on). If Rinnai code SEt comes back, the cause is still there and a licensed technician should check it.
Who can fix Rinnai code SEt near me?
Aurora Star Tech Inc. repairs Rinnai tankless water heaters in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: Tankless Water Heater No Hot Water: What to Check
Troubleshooting guides
- No hot water All brands · Tankless Water Heater
- Water temperature fluctuates All brands · Tankless Water Heater
Source: Rinnai Troubleshooting TWH Diagnostic Codes (100000652), p.5. 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.