E11
Avenli
Temperature Calibration / Sensor Mismatch Fault
E11 displayed and the spa cannot maintain set temperature; heater cycles erratically.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Incorrect replacement temperature sensor, Poor thermal contact between sensor and heater tube, Firmware expecting different sensor value, Loose sensor mounting clip
How to Fix / Troubleshooting
Safety first: Unplug the spa before adjusting or replacing sensors.
- Verify sensor type:
- Confirm that any recently replaced water temperature sensor is an original or approved Avenli part.
- Using a non-OEM sensor with different resistance characteristics can trigger E11.
- Check mounting:
- Ensure the sensor is firmly clamped to the heater tube or fully inserted into its well.
- Use the original metal clip or bracket to maintain good thermal contact.
- Inspect wiring:
- Look for loose connections or partially inserted plugs at the control PCB.
- Reset system: After correcting mounting and wiring, unplug for 5 minutes, reconnect, and test heating.
- Persistent E11: If the correct sensor is installed and mounted properly, the main control PCB may have a calibration or firmware issue and should be replaced with the correct Avenli control box for your model.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Water Temperature Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements