BoilerFaultCodesYour boiler's main internal computer has developed a fault and is unable to control the heating system correctly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Defective control panel.
What causes this fault?
This fault occurs when the boiler's internal computer chips suffer a hardware failure or a communication breakdown between the electrical components. The most common reason is natural wear and tear of the delicate electronic circuits over time, or damage caused by an unexpected electrical power surge.
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
A boiler cover plan would cover faults like 7H — no call-out fees, no surprises.
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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