Glow-worm User interface keypad failure

Furnace display works but controls are unresponsive or buttons do not function

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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

Worn or damaged keypad, Moisture ingress into Glow-worm control panel, Faulty interface PCB, Loose ribbon cable

How to Fix / Troubleshooting

Safety: Isolate power before removing the control panel.

User steps:

  • Try a power cycle: turn off at the isolator for 30 seconds, then back on.

Technician steps:

  • Remove the front panel and inspect the keypad and display board for damage or moisture.
  • Check and reseat the ribbon cable between the user interface and main PCB.
  • Replace the user interface module if buttons remain unresponsive.
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Repair Difficulty

Medium 3/5

Required Part

User Interface / Keypad Module
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