Poolex
Display Backlight / LCD Failure
Poolex pool heater display is very dim or unreadable, but the unit still runs.
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Possible Causes
Aging LCD backlight, Voltage drop in display power supply, Moisture damage to display board, Faulty display contrast settings (on some models)
How to Fix / Troubleshooting
Safety: Turn off power before removing the display panel.
Steps:
- Check contrast/brightness: Some Poolex models allow adjustment via the menu; try increasing brightness.
- Inspect for moisture: Dry any condensation and improve sealing.
- Check connectors: Reseat the display power connector.
If the display remains dim, replace the Poolex display module.
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Repair Difficulty
Easy
2/5
Required Part
Display Module
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