E15
Lochinvar
User Interface / Keypad Communication Error
Display shows E15; heater may not respond to user inputs or external controls.
Advertisements
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.
Advertisements
Possible Causes
Loose ribbon cable between display and main board, Failed display/keypad module, Control board communication fault
How to Fix / Troubleshooting
Safety: Turn off power before removing the front control panel.
Steps:
- Inspect keypad and display: Remove the front bezel to access the display module. Check for moisture intrusion or corrosion on the circuit board.
- Check ribbon cable: Ensure the flat ribbon cable between the display and main control board is fully seated at both ends and not damaged or pinched.
- Dry out moisture: If condensation is present, gently dry the area with a clean cloth and allow time for complete drying before reapplying power.
If E15 persists, the display module or main control board may need replacement by a technician.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Display / Keypad Assembly
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements