E15
Idrobase
Main Control Board Fault
E15 error and controller does not power up or randomly reboots
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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
Internal PCB failure, Shorted component on board, Persistent overvoltage, Liquid damage to electronics
How to Fix / Troubleshooting
Safety: Unplug the softener before opening the control housing. Only qualified persons should work on live circuits.
- Visual inspection: Remove the control cover and inspect the main PCB for burn marks, corrosion, or cracked solder joints.
- Check for moisture: Look for signs of condensation or leaks above the control area. Fix any plumbing leaks before replacing electronics.
- Connector check: Reseat all connectors to the board, including power, motor, sensors, and display.
- Isolate fault: Disconnect non-essential loads (e.g., sensors, motor) and power the board alone. If it still fails or E15 appears, the board is defective.
- Replace board: Order the correct Idrobase control board model. Transfer any jumpers or configuration plugs from the old board. Reassemble and reprogram parameters as required.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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