E11
Calpeda
Temperature Sensor Fault (Motor or Water)
Controller shows E11 and pump runs but display indicates sensor error
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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.
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Possible Causes
Open-circuit motor temperature sensor on Calpeda motor, Shorted water temperature probe in Calpeda system, Damaged sensor cable between sensor and controller, Incorrect sensor type configured in Calpeda controller
How to Fix / Troubleshooting
Safety first: Isolate power before handling any sensor wiring.
- Locate the sensor: Identify whether the error refers to motor temperature (embedded in motor windings or housing) or water temperature (probe in pipe or pump body).
- Inspect wiring: Follow the sensor cable from the probe to the Calpeda controller. Look for cuts, abrasions, or loose connectors. Reseat plugs and tighten terminals.
- Measure sensor resistance: Disconnect the sensor and measure its resistance with a multimeter. Compare to the expected value from the Calpeda manual (e.g., NTC thermistor curve). Infinite or zero resistance indicates a failed sensor.
- Replace faulty sensor: Install a Calpeda-approved replacement sensor of the same type and rating. Route the cable away from high-voltage lines to avoid interference.
- Check controller settings: In the controller menu, confirm that the correct sensor type (e.g., NTC 10k) is selected. Adjust if necessary and reset the E11 error.
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Repair Difficulty
Medium
3/5
Required Part
Calpeda motor temperature sensor
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