F80
FAULT CODE
Glow-worm
Condensate Drain Fault
Medium Severity
DIY Check Possible
The condensate cannot drain freely, possibly due to a blockage or freeze.
Cold Weather Note
Insulate external condensate pipes to prevent winter freezing.
Step-by-Step Fix Guide
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Step 1
Check for ice or debris in the condensate pipe
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Step 2
Pour warm water over frozen sections
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Step 3
Reset after clearing
Gas Safe Reminder
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.