E16
FAULT CODE
Biasi
Condensate Trap Full / Blocked
Medium Severity
DIY Check Possible
The condensate trap is full or the drain pipe is blocked. Condensate cannot drain freely.
Cold Weather Note
Frozen condensate pipes are very common in cold weather. Insulating the pipe can prevent this.
Step-by-Step Fix Guide
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Step 1
Check the external condensate pipe for blockages or ice
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Step 2
Pour warm (not boiling) water over any frozen sections
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Step 3
Clear any debris from the drain exit
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Step 4
Reset the boiler 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.