E7
Poolex
Keypad / User Interface Fault
Poolex pool heater shows E7 and does not respond to keypad inputs.
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Possible Causes
Failed Poolex display/keypad board, Damaged keypad membrane from UV or moisture, Loose ribbon cable, Liquid ingress into control panel
How to Fix / Troubleshooting
Safety: Turn off power before removing the front control panel.
Steps:
- Inspect panel: Look for cracks, water inside the display window, or stuck buttons.
- Dry moisture: If condensation is present, carefully dry the area and improve weather protection.
- Check ribbon cable: Reseat the cable between the keypad and main PCB.
Replacement:
- Order the correct Poolex display/keypad assembly for your model.
- Swap the panel, transferring the gasket to maintain waterproofing.
- Reconnect the ribbon cable and test operation.
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Repair Difficulty
Easy
2/5
Required Part
Display / Keypad Board
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