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We have 9 questions about mending 'combi 90 system' in category Heating, Home Heating Systems which have been answered

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my grant mk11 combi boiler starts to fire but then locks out?

my grant 90 mk11 oil fired boiler attempts to fire there is an initial response and then ignition fails. There... [Read more]
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Grant outdoor combi 90 v3?

My sealed system loses pressure when I run the hot water. When boiler cuts in the system builds up pressure ag... [Read more]
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Firebird Oil boiler, pressure always increases?

Hello Firebird, We have a Firebird Combi 90 and a few weeks ago we had thermostats put on our radiators an... [Read more]
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Boiler not pressurising - Halstead finest gold?

I have a Halstead Finest Gold Combi boiler. I used to put pressure into the system by turning a value lever at... [Read more]
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Boiler not pressurising - Halstead finest gold?

I have a Halstead Finest Gold Combi boiler. I used to put pressure into the system by turning a value lever a... [Read more]
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How can I fix my Potterton promax HEplus?

My mother recently had a combi boiler installed after having a traditional hot and cold water system previous... [Read more]
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Worcester 24i - Cold Radiators!!!?

Hello I am having problems with my central heating system. Basically the radiators are cold even when the hea... [Read more]
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Add water to sealed Worcester Bosch Highflow 400 combi boiler?

As the sealed system does not have an expansion tank, we are looking for a screw to turn 90 degrees to let wat... [Read more]
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Over-pressurised combi boiler system - help!?

Trying to re-pressurise my Sime Super 90 Plus, I opened filling loop valve and let water in to 1 bar pressure.... [Read more]

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