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We have 191 questions about mending 'problem thermostat boiler' in category Heating, Home Heating Systems which have been answered

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combi oil Worcester greenstar heatslave 12/18 switches off?

I have a internal combi oil Worcester greenstar heatslave 12/18 Its has a built programmer and Hot water t... [Read more]
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Domestic hot water very hot ?

Worcester bosch high flow 400 - hot water stat on the boiler is sett low but the water from the taps is extrem... [Read more]
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Problem with Worcester Bosch Greenstar 38CDi Classic ERP Boiler?

We had a Worcester Bosch Greenstar 38CDi Classic ERP boiler installed at the end of July 2015. We keep gettin... [Read more]
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Danfoss REP230 Thermostat Wiring?

Long story short, I have the above thermostat and had an installer try to replace it with the new NEST thermos... [Read more]
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Boiler Hot water intermittently losing temp, Heating seems fine?

The title explains the main issue, for some reason the hot water drops often every 20 secs or so, sometimes it... [Read more]
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Siemens RCR10/433 receivers?

I am in a recently acquired house and am new to all these wireless systems. I have looked at all the previous ... [Read more]
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No heating or hot water on system boiler?

I have a system boiler and at present I am calling for heating and hot water and am getting nothing. the pilot... [Read more]
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How do I reset my wireless Siemens RDJ10RF thermostat?

"I have a wirelss Siemens RDJ10RF thrmostat with RCR10/433 receiver.""The lights on the receiver have gone out... [Read more]
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is my boiler overheating?

I have no experience with boiler, I touched the flue duct on the top of the boiler, it's hurt, very very hot... [Read more]
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How to fix my Ariston MicroGenus MFF1 23 combi boiler?

It appears that the timer does not work to turn of the boiler off when it is instructed to do so. The thermost... [Read more]
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Baxisolowm50/4rsfaulty?

The pilot light is on boiler will not fire up I have linked out the boiler thermostat but still won't fire is ... [Read more]
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