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Fix Fault Boiler Thermostat

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We have 1248 questions about fixing 'boiler thermostat'

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My Potterton Prima F80 is not shutting down?

After many years of service my boiler has just developed a strange fault. Even though the time controller (Honeywell ST6400C) is in the 'off' cycle, the boiler is still running. It shuts off periodica ... more

home Fix label Heating label_important Home Heating Systems category Pottertondone

Oil fired boiler thermostat?

I'm struggling to get enough heat out of my boiler in this prolonged cold spell. I've been told to turn the boiler stat to maximum because the mains water is now very cold and the stat simply controls ... more

home Fix label Heating label_important Home Heating Systems

Greenstar boiler heating water but not central heating independently?

Hi folks I wonder if you could help me with the following problem - I have a Worcester Bosch Greenstar ri (15 I think) condensing boiler (it's not a combination) and it's decided to have the follow ... more

home Fix label Heating label_important Home Heating Systems category Boschdone

worcester danesmoor 15/19 no response?

our boiler fired up in the morning no problems.we had power cut in afternoon and boiler will not do anything. when turning on/off dial at front does not bring on any power light,have checked power a ... more

home Fix label Heating label_important Home Heating Systems category Worcester

fixing thermostat?

i have just moved to different house the boiler is a myson 500c.the thermostat is stuck on 2 and i can shift it.i presume this should just by hand easily.is there anything i am doing wrong?

home Fix label Heating label_important Home Heating Systems category Myson

BOILER ON FULL EVEN WHEN OFF?

Hi, our boiler which is less than 6months old seems to be on full even when it's actually switched off at the thermostat. This is resulting in the downstairs radiators being extremly hot and upstairs ... more

home Fix label Heating label_important Home Heating Systemsdone

Worcester 350 boiler?

The red low system pressure light came on and the boiler stopped, having filled the system up through the loop to 2bar, the red light stays on, no other lights come on including the power light, there ... more

home Fix label Heating label_important Home Heating Systems category Worcesterdone

If I turn the thermostat down the boiler turns off?

Hello, Can anyone please help. I have a Worcester 25si boiler & would like to turn the thermostat down however, even if i do this by a small amount (even 3 degrees) it turns off. Any idea of wh ... more

home Fix label Heating label_important Home Heating Systems category Worcesterdone

vokera linea combi boiler problem?

have just moved house, when the boiler is set to hot water only. when the water temp drops below 40 on the display the boiler fires up and heats the water to 60. but there are no taps on or dripping, ... more

home Fix label Heating label_important Home Heating Systems category Vokeradone

How do you repair two flashing lights (overheat thermostat)?

My Worcester 24cdi boiler has packed up after I made the disasterous idea to decorate and remove a radiator. Since this I get two red flashing lights with no hot water or heating. There is no sparking ... more

home Fix label Heating label_important Convector Heaters category Worcester

Not getting full heat from the radiators?

I have a Potterton Primera combi boiler. The radiators are not heating properly, they are barely warm (as if each of them has been turned down low) and the pipes are the same. Throughout each radiat ... more

home Fix label Heating label_important Home Heating Systems category Pottertondone

Heating Digistat RF2 unit?

My ACL Drayton Digistat RF2 signals to the SCR receiver (which picks up the signal correctly) when I first insert the batteries, but after that it doesn't seem to send any more signals to the SCR unit ... more

home Fix label Heating label_important Home Heating Systems category Draytondone

Drayton digi stat - new batteries but nothing works?

Have just replaced batteries and there is stil no display - no display no heating - is there nanyway to bypass the wireless thermostat and put boiler on constant?

home Fix label Heating label_important Home Heating Systems category Draytondone

vailant combi boiler?

my combi boiler will produce hot water but will not heat the radiators. the boiler will kick in untill it gets to the temperature that the thermostat is set to and then cut out as it normally should. ... more

home Fix label Heating label_important Convector Heaters

how can I fix my vokera syntesi 29 combi-boiler?

my vokera syntesi combi-boiler works ok when first switched on, after a couple of hrs, the boiler becomes noisy and the burner will not fire up even though the thermostat light is on, if i then t ... more

home Fix label Heating label_important Home Heating Systems category Vokeradone

Potterton Promax 15HE Boiler -relay clicking problem?

Hi, Need some help please. A 6yr old Potterton Promax 15HE on an unvented boiler installation has suddenly stopped heating both DHW & CH. Had worked well without issues for 6yrs. Now when reset, fan ... more

home Fix label Heating label_important Home Heating Systems category Pottertondone

boiler wont fire up?worchester 24i jounior?

my boiler will not fire up, water pressure seems fine.new batteries in thermostat,vent to the outside of the house is clear

home Fix label Heating label_important Home Heating Systems

No hot or cold water-Pottrerton Boiler & Accolade Storage Tank Help! ?

Hi all, I have a Potterton Suprima 60L Boiler and an Accolade 144 AA160 unvented hot water storage system. It is fitted in a 7 year old house, we are experiencing very low temperatures in Scotland at ... more

home Fix label Heating label_important Home Heating Systems category Pottertondone

my worcester R40HE boiler turning off issues?

the last 2 days this boiler that is just running the central heating will only turn off when the on off switch is turned . neither the central heating timer or the room thermostat make no difference ... more

home Fix label Heating label_important Home Heating Systems category Worcester

wanted potterton firetide 35/51 spairs?

hi can anyone help iam looking for back boiler thermostat control box for a potterton firetide 35/51 part number 209325. gc number 44-590-15 thanks will

home Fix label Heating label_important Home Heating Systems category Potterton

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