BoilerFaultCodes Complaints of noise (9) Medium
Your boiler is struggling to move water through its system due to a buildup of internal debris, causing it to run loudly.
Book a service
This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.
Technical description: Heat exchanger partially blocked.
Typical repair cost £250-500 (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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