Check whether there is power, whether controls are calling for heat and whether the boiler displays a fault code. In cold weather, also consider an accessible frozen condensate pipe.
Understanding the issue
Check whether there is power, whether controls are calling for heat and whether the boiler displays a fault code. In cold weather, also consider an accessible frozen condensate pipe.
What to check
Do not remove the boiler casing or attempt gas work. If you smell gas, follow emergency gas-safety guidance rather than continuing troubleshooting.
When to get advice
Households with vulnerable occupants may need a faster response, particularly during very cold conditions.
This is general information, not a substitute for inspecting your property. Do not work on gas equipment or live electrical parts unless appropriately qualified. If there is immediate danger, call 999. If you smell gas or suspect a gas escape, leave the affected area and call the National Gas Emergency Service on 0800 111 999 from a safe location. Do not operate electrical switches or use naked flames.
Official guidance
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