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Plumberpro, Home Appliance Technician
Category: Appliance
Satisfied Customers: 634
Experience:  Heating and hot water heating appliances experienced
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I have a Glow worm compact system boiler. it's a 2002 model

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I have a Glow worm compact system boiler. it's a 2002 model , sometimes the pilot doesn't light and when it does light it only stay on for about 5 minutes.

Hi , is the pressure above 1.2 bar?

Does the boiler produce heat?

Customer: replied 2 years ago.

yes way above 2.6

When it runs for those five mins , does it produce some heat , ie boiler lights and starts heating water?
Customer: replied 2 years ago.


OK , then most likely the boiler is overheating .
Causes are sludged ,dirty system
Failing pump
Or faulty boiler stat .
First I would try to bring the pressure down to around 1.2 by bleeding a radiator bleed valve( with rad bleed key) into a pot , release the water/ air till pressure drops .
Make sure radiators are all bled and any manual air bleed valves, especially near hot water cylinder as air can cause overheating as the water can't flow through the boiler at the right flow rate
Plumberpro and other Appliance Specialists are ready to help you
Customer: replied 2 years ago.

thank you

Your welcome