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Fix Fault Boiler Thermostat

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We have 1248 questions about fixing 'boiler thermostat'

What is wrong with our Potterton Profile 80E boiler?

It is about 20 years old but works very efficiently when ON. The trouble is the pump is on constantly (24/7) and the boiler keeps firing up even when the thermostat in the hall is off and the program ... more
home Fix label Heating label_important Home Heating Systems category Pottertondone

do i need a new dt20rf programmer?

the digital display has gone blank and does not control the heating. the boiler still works and can be controled by the boiler thermostat. ihad to turn this down to frost as the heating came on and wo ... more
home Fix label Heating label_important Home Heating Systemsdone

why is radiators hot when only water is on..HELP?

the boiler is a micron glow worm and timer is lifestyle model LP522..When i switch water on the radiators get very hot even though heating is not on..still the same if i turn the temp down on the ther ... more
home Fix label Heating label_important Home Heating Systemsdone

Saunier Duval Combi Boiler Pressure Rises?

Hi Hopefully someone can answer this problem for me please? I have a Saunier Duval Thema Condens F30e Boiler which recently had the heat exchanger replaced (intermittent hot water). However, si ... more
home Fix label Heating label_important Home Heating Systems category Saunier Duvaldone

my rsf820/20t keeps cutting out after a minute?

my boiler keeps cutting out after a minute and i have to keep relighting it i have replaced the pump for new one can you give me some ideas,i thought it might be fan or overheat cut off thermostat
home Fix label Heating label_important Home Heating Systemsdone

baxi combi, my radiators are on all of the time all of a sudden?

the electric blew in our house and later on i noticed the rads in the house were on constantly. I have a Baxi combi boiler only a year old and a boss bps242rf wireless thermostat and br1 receiver. ... more
home Fix label Heating label_important Home Heating Systems category Baxidone

ikon 4050ci boiler fault?

Ikon 40-50 ci Only fires if I turn stat off and on several times, I have replaced PCB , pressure switch and thermostat could it be multifunction controller.
home Fix label Heating label_important Home Heating Systems

What else can I try after resetting my Siemens RDJ10RF?

I have done the usual reset and the green light is on the receiver and the arrow is lit on the thermostat showing it knows heat is required but the heating is not coming on. We do have hot water so th ... more
home Fix label Heating label_important Home Heating Systems category Siemensdone

no hot water or heating even though boiler fires up?

When I turn on my hot tap the boiler fires up but the water does not get hot, when I turn on thermostat the boiler fires up but the rads do not get hot? It's a Worcester 28i.
home Fix label Heating label_important Home Heating Systems category Worcesterdone

What is wrong with my central heating?

Hi My central heating and hot water will not turn on when requested. The electronic time is set to 24 hrs and the thermostat is turned up to 35 degrees plus but nothing. The boiler on light is lit bu ... more
home Fix label Heating label_important Home Heating Systemsdone

Potterton Profile 80E Starts OK on HW but not on CH?

Boiler would start (fan running for 20 seconds) but would not complete the ignition cycle. Replaced the PCB. After replacing the PCB the boiler goes through full start sequence and ignites when progra ... more
home Fix label Heating label_important Home Heating Systems category Pottertondone

isar he30?

help , i have a isar he30 combi boiler the problem i am having is heating is turned off via honeywell cm927 thermostat but the heating remains on . has any one got any ideas why this is happening as i ... more
home Fix label Heating label_important Home Heating Systems category Honeywelldone

Problem with Potterton Promax HE24 Boiler?

The hot water system works ok. I have fitted a thermometer to the outlet from the boiler and this goes up to over 70 until the cylinder thermostat cuts in. If I run water then it cuts in as expected. ... more
home Fix label Heating label_important Home Heating Systems category Potterton

Replacing LP112 Programmer?

I'd like to replace my LP112 Programmer & TS 142 mechanical roomstat with something more accurate and with optimum start etc. I've put in TVRs incl 2 Terrier Programable TRVs and the boiler is an old ... more
home Fix label Heating label_important Home Heating Systems category Honeywelldone

Drayton RFI Digistat?

My Drayton Digistat SCR has a constant red light and does not fire up the boiler through the wireless thermostat when the fire symbol comes on. Have changed the battery and tried to relink signal bu ... more
home Fix label Heating label_important Home Heating Systems category Drayton

Hot water but not central heating . . ?

I have just moved into a flat which has a Sabre 29HE Plus combi boiler. It is heating the water but when I switch the Main control to the hot water and central heating setting, it still heats the wat ... more
home Fix label Heating label_important Home Heating Systemsdone

Ferroli HE31C - Hot water but no heating?

There is an error code D2 on the boiler and no matter what I try I can't make it go away. I've tried turning it off then back on again and it seems to start firing up but then goes straight back to D2 ... more
home Fix label Heating label_important Home Heating Systems category Ferrolidone

How can i fix my potterton combi 80?

My problem is when i switch the water on it takes ages for the flame to ignite, once it ignites it only stays on for about 30 seconds so i have no hot water, my second problem is the central heating f ... more
home Fix label Heating label_important Home Heating Systems category Potterton

Drayton Digitstat RF1 Wireless Thermostat?

Have come home from an extended holiday to find no heating. Stat set at 15c to come on when house cold. Stat showing 13c. Found boiler had lost pressure so topped up. Following morning still no heat ... more
home Fix label Heating label_important Home Heating Systems category Draytondone

Broag remeha 24v boiler working perfectly -but?

The boiler fires up when it should with the programmer, everything fine until programmer times out but electric is still going to room thermostat and boiler thermostat, electrician says not wiring but ... more
home Fix label Heating label_important Home Heating Systems category Remehadone

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Fix Fault

Audio Bathroom Appliances Boats Breakables Cameras Clocks and Watches Clothing Computers Cooling D.I.Y Furnishings Furniture Garden Tools Heating Household Appliances Kitchen Appliances Leisure Equipment Memory Musical Instruments Navigation Office Appliances Power Tools Security Systems Software Telephones Toys Vehicles Video

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