E14
Pentair
Thermostat / Temperature Setpoint Fault
Heater displays E14 and will not fire when there is a call for 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 keypad or display board, Faulty internal thermostat circuit, Corrupted control board firmware, Shorted keypad buttons
How to Fix / Troubleshooting
Safety: Turn off power before removing the front panel or control bezel.
- Power cycle: Turn off power at the breaker for 2–3 minutes, then restore power to reset the control.
- Inspect keypad and display: Check for moisture intrusion, cracked display, or stuck buttons. Dry any condensation and ensure the overlay is intact.
- Check wiring between display and main board: Reseat ribbon cables or harnesses connecting the user interface to the main control board.
- Replace display/keypad module: If buttons do not respond or setpoints cannot be changed, replace the user interface module.
- Firmware/board replacement: If E14 persists with a new keypad, the main control board may need replacement by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Keypad / Display Board
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