E20
Clearwater
Auxiliary Output Overcurrent Fault
E20 displayed and the unit indicates an overload or short on an auxiliary output (e.g., brine pump or external valve).
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
Shorted Clearwater brine pump, Shorted external relay coil, Damaged output driver on control board, Incorrect accessory wiring
How to Fix / Troubleshooting
Safety first: Unplug the softener before inspecting wiring. Do not work on live circuits.
- Disconnect accessories: Remove connectors for any auxiliary devices (brine pump, external valves) from the Clearwater control board.
- Inspect wiring: Look for pinched, bare, or crossed wires on accessory circuits.
- Test without load: Restore power with accessories disconnected. If E20 clears, reconnect devices one at a time to identify the faulty accessory.
- Replace shorted device: Replace any Clearwater brine pump or external valve that causes E20 when connected.
If E20 appears even with all accessories disconnected, the output driver on the control board is likely damaged and the board must be replaced.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Clearwater brine pump
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements