con
Glow-worm fault code
Glow-worm con: no communication between the PCB and the user interface
Engineer only
Glow-worm describes con on Energy range boilers as: no communication between the PCB and the user interface. Possible causes Glow-worm lists, for an engineer to check: electronics defective.
What you can safely do
There is nothing you can safely do yourself with this one. Leave the boiler off and book an engineer.
Call a Gas Safe engineer if
- Book a Gas Safe registered engineer.
Find a Gas Safe engineer near you
Opens the official Gas Safe Register search.
Applies to: Energy range. Codes can differ between models, so check your manual.