Boiler displays E15, may not respond to user inputs or may behave erratically.

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.

Possible Causes

Faulty display/keypad PCB, Moisture ingress into control panel, Damaged ribbon cable, Stuck or shorted buttons

Safety: Isolate power before removing the front panel or display module.

Dry the panel: If the boiler is installed in a damp area, moisture may affect the keypad. Gently dry the area and improve ventilation.
Power reset: Turn off power for several minutes, then restore. Sometimes the interface recovers after a full reset.
Inspect for damage: Look for cracked display, water stains, or corrosion around the keypad.
Professional replacement: If E15 persists, the display/keypad PCB or its cable must be replaced by a technician.

Medium 3/5

Display and Keypad PCB

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