Franklin Electric
Short Cycling / Control Instability
Pump starts and stops repeatedly every few seconds or minutes
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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
Faulty pressure switch or flow sensor feeding Franklin Electric controller, Automation system sending rapid start/stop commands, Loose control wiring, Overly sensitive dry-run protection settings
How to Fix / Troubleshooting
Safety first: Turn off power before working on control wiring or sensors.
- Observe control signals: Check the automation or timer to ensure it is not programmed to cycle the pump rapidly.
- Inspect sensors: Examine pressure or flow switches for sticking contacts or waterlogged diaphragms. Replace if faulty.
- Check wiring: Tighten low-voltage control terminals on the Franklin Electric controller and look for intermittent connections.
- Adjust protection settings: If the controller allows, increase the delay or hysteresis on dry-run or low-flow protection to prevent nuisance trips.
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Repair Difficulty
Medium
3/5
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