Your boiler is the heart of your home’s heating system. When it suddenly stops working, panic can set in — especially during colder months. But not all boiler problems require professional help. At A&C Heating and Plumbing Ltd, we want to help North and West London residents feel confident handling minor boiler issues safely.
1. Check the Boiler Pressure
If your boiler stops working or makes unusual noises, check the pressure gauge. The ideal range is usually between 1 and 1.5 bar.
How to fix it:
If the pressure is too low, locate the filling loop (usually a silver braided hose) and slowly open the valves to top up. Don’t forget to close them once the gauge reads correctly.
Tip: If pressure keeps dropping, you may have a leak — call a professional.
2. Reset the Boiler
Modern boilers often show error codes. If your boiler has locked out due to a temporary fault:
How to fix it:
Press the reset button (check your manual for location). Wait a few minutes. If the issue continues, it may be a deeper problem.
3. Bleed Your Radiators
Cold spots or uneven heating could be due to trapped air.
How to fix it:
Use a radiator key to slowly release air from the top of the radiator until water drips out. Don’t forget a towel!
4. Check the Thermostat Settings
It may sound simple, but thermostats can be accidentally changed or run out of batteries.
How to fix it:
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Make sure the temperature is set correctly
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Replace the batteries if needed
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Check that it’s communicating with the boiler
5. Verify Power and Gas Supply
A tripped switch or gas valve can stop the boiler from running.
How to fix it:
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Check your fuse box for tripped circuits
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Ensure your gas supply valve is open
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For prepayment meters, make sure you have credit
When to Call the Professionals
While these tips can help solve minor issues, you should call a Gas Safe registered engineer if:
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The boiler keeps losing pressure
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You smell gas
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Water is leaking from the boiler
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There’s no hot water or heating after basic checks
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You see repeated error codes
Trust A&C Heating and Plumbing Ltd in North & West London
We’re your local experts in boiler repair, servicing, and installation. Fast response, certified engineers, and honest pricing.
Covering areas such as Ealing, Chiswick, Acton, Islington, Harrow, Kilburn & more
Call us on 0779 559 5757
Contact Us Online
FAQs – DIY Boiler Troubleshooting
Q: Is it safe to top up my boiler pressure?
A: Yes, as long as you follow the manual and don’t overfill.
Q: Why does my boiler keep turning off?
A: Could be low pressure, thermostat issues or air in the system.
Q: Can I fix a leaking boiler myself?
A: No. This is a job for a qualified heating engineer.
Need Help With Your Boiler?
If your boiler isn’t working properly and DIY fixes don’t solve the issue, get in touch with A&C Heating and Plumbing Ltd today.
Same-day repairs Experienced engineers Transparent pricing Local to North & West London
Call 0799 559 5757 or Book Online