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We have 872 questions about mending 'heating valve boiler'

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Mend Heating, Home Heating Systems

Ideal boiler HE 30 Pressure problems?

My Ideal boiler HE 30 is losing pressure even when the isolation vales are closed on the heating flow and retu... [Read more]
Mend Heating, Home Heating Systems

Pressure rising to high ?

Hi. I have a Worcester 24i junior combi boiler and the pressure is rising all the time and the water is runnin... [Read more]
Mend Heating, Home Heating Systems

the boiler heats the water but none is sent to tap or radiators?

after replacing the flow switch and diverter valve assembly complete I still have the same problem . the boile... [Read more]
Mend Heating, Home Heating Systems

Potterton Performa 24 DHW issues?

My Potterton Performa 24 has developed a DHW fault, & I need help resolving it please. In November, it stoppe... [Read more]
Mend Heating, Home Heating Systems

Heating? Ariston micro genus 27 mffi?

hot water fine but when I put heating on the boiler fires up but the motorised valve just fitted on boiler doe... [Read more]
Mend Heating, Home Heating Systems

baxi 80e combi boiler?

HEATING symbol doesnt light up,have followed fault finding procedure & fitted new PCB still no heating, divert... [Read more]
Mend Heating, Home Heating Systems

Worcester heatslave 20/25?

Hi, I have been having a problem with my heating for some months now but very intermittent, occasionally the h... [Read more]
Mend Heating, Home Heating Systems

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]
Mend Heating, Home Heating Systems

Potterton Netaheat M11 no heating no hot water?

The boiler lights up and gets very hot and then closes down. We have replaced pump and fan. Zone valve wor... [Read more]
Mend Heating, Home Heating Systems

Glow-worm 30cxl?

Started off blowing 3amp fuse in boiler, water cold but heating working ok, engineer came out and fitted a ser... [Read more]
Mend Heating, Home Heating Systems

Boiler seems to be running cooler?

We have a Worcester Heatslave 20/25 boiler and it has been fine so far with regular maintenance. when the hea... [Read more]
Mend Heating, Home Heating Systems

help! glow worm betacom 24c no heating?

Ok here goes... the above boiler was working fine! After coming back from a weekend trip i noticed the hea... [Read more]
Mend Heating, Home Heating Systems

what is the part number for a central heating flow outlet valve on a ferrol?

What is the part number for a central heating flow outlet valve for a ferroli optima901 boiler
Mend Heating, Home Heating Systems

halstead ace he 30 combi boiler?

boiler is working fine hot water and heating but goes over pressure blows off through pressure release valve. ... [Read more]
Mend D.I.Y, Plumbing

istor he260 and manifold to underfloor heating?

our boiler provides hot water to the tap shows a c on the front control which i believe means the heating is o... [Read more]
Mend Heating, Home Heating Systems

potterton performa 30 HE?

Hi water working fine but when central heating is turned on upstairs radiators work ok but downstairs nothing.... [Read more]
Mend Heating, Home Heating Systems

Motorised valve for boiler?

I have a problem with my boiler- i only get hot water when the CH is switched on - i think the problem is with... [Read more]
Mend Heating, Home Heating Systems

baxi solo 30/80 boiler no hot water or heating?

I have baxi solo 30/80 boiler. the pump works. new three port valve has been installed. the boiler fires when... [Read more]
Mend Heating, Home Heating Systems

My Ariston Combi A boiler keeps losing pressure from Central heating loop?

Heating loop pressure drops to the red line twice a day. Cannot find any leaks from any of radiator and no lea... [Read more]
Mend Heating, Home Heating Systems

Falling Pressure?

Each year at this time when I turn the heating on on my Linea 24 combi boiler after being off all summer, the ... [Read more]

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