Fix Fault Boiler Thermostat

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We have 1247 questions about fixing 'boiler thermostat'

Glow-worm betacom 30c combi boiler overheat thermostat light flashing?

Overheat thermostat light flashing and reset will not work. Every time I reset it just goes back to fault. No hot water. No central heating. Glow-worm betacom 30c combi boiler. 5/6 yrs old. GC No. 4 ... more


drayton lp522?

Boiler comes on even when thermostat sais off. Boiler serviced 2 months ago. Boiler in house. Good insulation and thermost in room is low . Just bought house so do know if this has been a long term is ... more


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Micron 50ff cutting out before room up to temperature?

Hello all; have an old 50ff although in the last year it has had fitted a new air pressure switch, new fan, new pcb, new thermistor, heat sync and new honeywell controller (st699). So yes, new boiler ... more


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why is my combi boiler not staying fired for central heating. water fine?

my Glow worm combi has been having odd days when the central heating isn't working but then has been ok again after a day or two. But now it hasn't worked for the last four days. Hot water is fine. ... more


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How can I fix the timer on my Gledhill Boilermate central heating boiler?

I have a Gledhill BoilerMate system driving my central heating system which has a Grasslin Thermostat timing system. I noticed recently that the central timer part is not physically connected to th ... more


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Baxi Combi 80e - Hot water Inconsistant?

I have a Baxi Combi 80e. I have an issue that the hot water doesn't run constantly when the tap is on and will turn to cold and then get hot again. The boiler will ignite whilst it's running hot and g ... more


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fitting thermostat?

Fitting thermostat to Glow-worm 24cxi boiler


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Remeha Avanta plus boiler hot water is working but not central heating?

Can anyone help please? My boiler is heating hot water fine, but the central heating won't turn on. I've checked the pressure and it's above one bar, there are no error codes, just one dot showing in ... more


My Boss therm BR1 receiver works erratically?

My new Boss thermostat controls work erratically. Normally the BR1 receiver shows a green light at the top ( I think that indicates it is connecting to the sender unit in the hall) but occasionally it ... more


Siemens rdj10rf thermostat clock?

I have the Siemens rdj10rf thermostat clock and receiver. I changed the batteries on the thermostat, I pressed the resetime button the receiver, which is on the wall beside the boiler. And I pressed t ... more


ideal combi 30 boiler heating not working on timer only override?

The heating only comes on when I override the timeclock if in timer mode the timeclock keeps the correct time but does not bring the heating on. I thought it might be a faulty thermostat but if u turn ... more


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RDH10RF, thermostat not turning radiators on?

I've got a Worcester 28CDi boiler & Siemens RDH10RF thermostat. The batteries in thermostat died so i changed them. Now it won't turn my heating on. I've got hot water but no heating. The lights on th ... more


red flashing button siemens RCRIO/433?

red button keeps going from green to red on RCRIO/433 Receiver, the boilers temperature often goes a degree above setting the boiler is still cutting in and out as normal but the receiver does not s ... more


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Glowworm cx30i gas boiler?

My boiler comes on intermittently when the thermostat is turned down below zero degrees. It is all running fine and domestic hot water is OK too, when you turn the heating thermostat to demand he boi ... more


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Vokera Compact cutting out?

Boiler is cutting out and very reluctant to reset. In the last 3 hours I've reset 20+ times - it fires up but cuts out again sometimes within seconds. We have a care package and in the last week 3 p ... more


Valiant thermostat , BMU-Err ?

Vaillant thermostat and boiler with the error message on thermostat What do I do?


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I have a ferroli Modena 102 Modena boiler?

My central heating light on control panel keeps flashing and boiler will kick up then go of after 2 minutes but also my thermostat doesn't work is this the problem many thanks


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 temperature control and Central heating temperature control dial both marked from 1 to 6. ... more


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home heating systems?

I have an 12 yr old Highflow Electronic system, which is working perfectly for hot water. However the heating comes on heats up some of the radiators and then goes off. The thermostat is connected t ... more


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digistat rf3 SCR wont talk to boiler?

i am installing a digistat rf3 to replace a previous digistat. the scr and remote digistat programmer/thermostat are communicating with each other but not with the boiler. the boiler comes on as soon ... more