BoilerFaultCodes HEATER “SMELLS” FROM OUTSIDE BUILDING AT POINT OF TERMINATION Emergency
Your boiler is struggling to burn gas cleanly and is exhausting fumes inefficiently outside, which could indicate a dangerous build-up of combustion gases.
Act immediately
Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now — this fault can be dangerous if ignored.
Technical description: i) Gas rate too high ii) Blocked flue iii) Insufficient aeration iv) Delayed ignition due to poor pilot flame v) Heater case not fitted correctly vi) Defective sealing around heater case
Typical repair cost £120-250 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
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