BoilerFaultCodesYour boiler is not broken; it is simply in 'Holiday' mode, which keeps the system turned off except for frost protection.
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: Displayed when the boiler control switch is in the 'H' position.
What causes this fault?
This code appears because the physical control knob on the boiler's front panel has been rotated to the 'H' setting. When this mode is selected, the boiler intentionally stops providing heating and hot water to save energy while you are away. It is a user-activated setting rather than a mechanical failure or a system error.
This code is most frequently seen during the summer months or holiday periods when homeowners manually adjust their settings before travelling.
DIY fix possible
Locate the main control switch on the boiler panel.Turn the switch from the 'H' position back to one of the active icons (Summer or Winter mode).Check if the display changes to show a temperature or power indicator.
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A boiler cover plan would cover faults like H — no call-out fees, no surprises.
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