E17
AquaHouse
Drain Valve Actuation Fault
E17 displayed and the unit indicates a drain valve or exhaust valve malfunction.
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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
Stuck drain valve piston in control head, Torn drain valve seal, Debris lodged in drain port, Failed AquaHouse drain solenoid (if equipped)
How to Fix / Troubleshooting
Safety first: Unplug the softener and place it in BYPASS. Depressurize the system before opening the drain valve assembly.
Step-by-step:
- 1. Inspect drain port: Remove the drain line and check for debris or scale at the port.
- 2. Access drain valve: Depending on the AquaHouse model, remove the drain valve cover or end cap to access the piston and seals.
- 3. Clean and lubricate: Rinse the piston and bore with clean water. Remove any iron or sediment. Lightly lubricate O-rings with silicone-based lubricant approved for potable water.
- 4. Check solenoid (if present): For models with an electric drain solenoid, verify the coil wiring and measure resistance with a multimeter. An open coil indicates failure.
- 5. Reassemble and test: Reinstall components, restore SERVICE mode and power, and run a manual regeneration to confirm proper drain operation.
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Repair Difficulty
Hard
4/5
Required Part
AquaHouse Drain Valve Assembly
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