E12
Saci
Internal Sensor Calibration Error
Pump display shows E12 and speed fluctuates unexpectedly
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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
Corrupted firmware settings, Electrical noise on sensor lines, Faulty internal pressure/flow sensor (if equipped), Control PCB malfunction
How to Fix / Troubleshooting
Safety first: Turn off power before accessing the control compartment.
- Factory reset: Use the user manual to perform a factory reset of the Saci pump controller. Re‑enter required parameters (speeds, schedules).
- Check grounding: Ensure the pump is properly earthed and that control cables are not run alongside high‑voltage lines, which can induce noise.
- Inspect internal sensors: If your model has an internal pressure or flow sensor connected to the PCB, verify the connector is secure and not corroded.
If E12 persists after reset and wiring checks, the control PCB or sensor module may require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Internal Sensor Module
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