Harris
Stuck Relay / Control Logic Fault
Pump will not turn off using the keypad; only turns off at the breaker
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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
Welded motor relay contacts on control PCB, Keypad failure sending constant run command, External automation overriding local control
How to Fix / Troubleshooting
Safety first: Use the breaker to shut off power before opening the control housing.
- Check external control: If the Harris pump is connected to automation, disconnect the control cable and test local keypad control. If normal control returns, reconfigure the automation.
- Test keypad buttons: Verify that the STOP/OFF button responds and is not physically stuck.
- Inspect control PCB: Look for signs of overheating near the motor relay. A welded relay will require PCB replacement.
Do not rely on a faulty control to stop the pump; replace the control module if the relay is stuck.
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Repair Difficulty
Medium
3/5
Required Part
Harris pump control module
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