E17
Stihl
Shared Power Rail / Relay Fault
Display shows E17; heater icon and pump icon flash together, no spray and no heat
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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
Failed heater/pump relay on control PCB, burnt relay contacts, broken common supply trace, loose neutral connection
How to Fix / Troubleshooting
Safety: Unplug the unit. Work on the control board only if you are comfortable with electronics.
- Visual inspection: Remove the control PCB and inspect the heater/pump relay area. Look for discoloration, cracked solder joints, or burnt traces.
- Check connectors: Ensure the multi-pin connector feeding both heater and pump is fully seated and that neutral and line wires are secure.
- Relay test (advanced): A technician can test the relay coil and contacts with a multimeter. If the relay does not actuate or has high-resistance contacts, it should be replaced with the same type.
Because this involves mains switching, relay replacement is best done by a qualified service technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Heater/Pump Power Relay
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