BoilerFaultCodesYour boiler is nearing the end of its programmed maintenance cycle and is displaying a service reminder, but it should still provide heat and hot water for now.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: ALTERNATING 'H' 'n' GO TO FRAME 95
What causes this fault?
This code appears because your boiler has reached a pre-set internal timer that tracks how long it has been since its last professional inspection. It is not caused by a component failure, but rather a digital reminder designed to ensure the system remains safe and efficient. Once a qualified engineer performs the annual service and resets the timer, the message will disappear.
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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