Fix Fault Boiler Thermostat

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We have 1247 questions about fixing 'boiler thermostat'

Digistat Drayton connection?

Hi, I’m useless with this stuff. Everything was fine and I had a service yesterday now I’ve lost the connection between thermostat and boiler, it’s calling for heat but not kicking in. Is it tha ... more


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Potterton EP2000 - pump control?

Potterton EP2000. Since having the pump replaced, the pump goes off when the boiler thermostat turns the bolier off. Consequently the last radiator never gets hot. How do I make the pump run continuou ... more


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Have CH+HW but HW alone is intermitant?

I have Potterton Ep2000 and Baxi Bermuda boiler with two valves a pump and a HW tank . I have CH but no HW or it runs intermittently I fitted a new thermostat to cylinder but this didn't work , whe ... more


Potterton Profile Boiler will not ignite. Possible Airlock?

We have a Potterton Profile 60e boiler. We have just replaced the central heating pump and turned everything back on. There are no airlocks in the water pipes and the water is flowing through the ne ... more


Valliant Eco Tech 615 boiler ?

since swapping a rad and bleeding boiler wont start in morning showing an F.15 code.( PCB board was replaced in June 2019 ) engineer at a loss and Valliant say replace PCB.( again) boiler is 9 years ... more


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My myson thermostat not turning on?

I changed the batteries in my myson thermostat, I reset the date and time and reprogrammed the on/off times however the heating isn't coming on at all even when I override it. I've tried resetting it ... more


How can I resolve an issue with BOSS Therm BPS242RF failing?

Just wondering if you have ever seen an issue like this: Heating setup: Boiler downstairs in kitchen, hot water storage tank in airing cupboard upstairs. One feed to radiators in main house and ano ... more


My radiators not heating up?

I have a 281 G/star combi boiler and have been away for 1 week and now back . Boiler is heating water fine but radiotors are not heating up. tried adjusting thermostat and bleeding etc , but nothing ... more


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Boiler heating above the programmed set back temperature ?

I have a boss therm wireless thermostat used all the advice regarding communication issues with this system however the boiler comes on during the night at random times and super heats the house. Setb ... more


Can't get Siemens RDJ10RF thermostat to reset?

Had no problem with the fitting on wall next to boiler but when I press "learn" on the other part to get two pieces to communicate absolutely nothing happens. Is there any way I can get my heating to ... more


Which model room thermostat do I need?

I have a Worcester Green Star 37cdi combi boiler. The room thermostat controller is showing an E1 fault so I need to replace it. Which model thermostat do I need?


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Capacitor replaced, second time since 2008, but the problem remains?

Hi Dave, took me a bit longer than 4 mins to replace my Drayton Digistat SCR capacitor but I have done it (no solder sucker makes cleaning solder from the holes difficult - any tips there?) I put the ... more


Is it easy to replace thermostat on potterton profile 80?

Boiler fires up when I jam thermostat knob with a piece of wood from below i.e. The knob moves up and down enough to lose contact.


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Worcester Bosch Greenstar Ri v Beast from The East?

My boiler has been struggling to reach thermostat temperature and has now started gurgling like its boiling a kettle inside also just noticed some drips of water on the worktop underneath from the pip ... more


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Boss therm not registering?

I had a new thermostat 2 years ago, but every day - at some time - it doesn't seem to receive or send messages. I have to take it off the wall, take it up to the boiler, turn the temperature down and ... more


home heating popular 90 boiler ?

My boiler will start up but after a short period of time about 4 to 5 mins it goes off and will not start again for about 30 mins, i have tried to start it with the pump turned off ans same story and ... more


Baxi Bermuda back boiler 551?

how to fix the furnace(no flame), the pilot light is on,the timer and thermostat are on


How can I program the BG330+ boiler?

Hi I hope someone can help. Our boiler only starts if manually forced to Hi or Low setting. It works for 15 min and then stops at around 60 to 65 deg, which ever is first. How I get it to start auto ... more


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alpha eco 2?

My boiler seams to be starting and stopping on its own, does not seem to be sinking with my thermostat,


Hot water & room temperature thermostat danfoss?

Need help! My temperature dial for my heating has fallen off ( this is the main that turns to switch heating on and controls temperature) its a simple dial (model- danfoss) housing association council ... more