E18
Idrobase
Regeneration Timeout Fault
E18 error and unit logs excessive regeneration time
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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
Valve not reaching end position, Motor stalling intermittently, Incorrect cycle time programming, Severe blockage in resin bed or distributors
How to Fix / Troubleshooting
Safety: Disconnect power and isolate water before opening the valve or tank connections.
- Review programming: Check that each regeneration step time (backwash, brine draw, rinse, refill) is within Idrobase recommended ranges. Correct any obvious errors.
- Check motor and cam: Observe the cam movement during regeneration. If it pauses or reverses unexpectedly, inspect the motor and piston for binding.
- Inspect resin bed: If flow is very low during backwash or rinse, the resin bed may be fouled or channelled. Consider performing a resin cleaning with an approved cleaner or replacing the resin.
- Distributor check: Remove the valve head and inspect the top and bottom distributors for blockage or damage.
- Test again: After corrections, run a full regeneration and confirm that it completes within normal time without E18.
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Repair Difficulty
Hard
4/5
Required Part
Control Valve and Resin Bed
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