Rinnai Error Code 07: Circulation flow rate below 2.1 GPM (Tankless)
Rinnai error code 07 on a tankless water heater means: Circulation flow rate below 2.1 GPM. It is also called Rinnai diagnostic code 07.
Homeowner? What Rinnai code 07 means for you
Check, then call Your tankless water heater is reporting: Circulation flow rate below 2.1 GPM. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.
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 07 mean?
On the RH180 hybrid, the water circulating through the unit has dropped below 2.1 GPM.
Applies to: RH180 hybrid tank-tankless (non-SENSEI) only
Common causes of Rinnai code 07
- No power to the unit
- Water supply off, or supply pressure under 30 PSI
- Pump not running, or pump wiring loose/damaged
A technician checks these and 2 other possible causes on site before replacing any part.
Rinnai models that use code 07
Other Rinnai Tankless codes
All Rinnai Tankless Water Heater error codes →
Rinnai code 07: homeowner questions
What does Rinnai code 07 mean?
Circulation flow rate below 2.1 GPM. On the RH180 hybrid, the water circulating through the unit has dropped below 2.1 GPM.
Is it safe to keep using my tankless water heater with code 07?
It depends on the cause. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.
Can I reset Rinnai code 07 myself?
You can try one reset (power off for 30 seconds, then on). If Rinnai code 07 comes back, the cause is still there and a licensed technician should check it.
Who can fix Rinnai code 07 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.11. 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.