How to mend ... Boiler Keeps Going Cold

Saunier Duval Thelia 623 boiler / shower issue?

Saunier Duval Thelia 623 combi boiler The weathers nice at the mo so the cental heating has been off the l... [Read more]

ravenheat csi system overheat red light?

the overheat indicater light comes on intermitanly when the boiler starts from cold and when it starts during ... [Read more]

potterton performer 28 leaks water?

when heating is switched on, the boiler seems to leak cold water from around the open 15mm pipe, under the ass... [Read more]

very hot water,high pressure and drips.....ahhhh!?

recently moved into house with ferroli modena 80e,serial starts 99. well it is a nightmare. the water in showe... [Read more]

Worcester Heat Slave 20/25 boiler. Very Low pressure?

Hot water pressure is very low. Water temp OK. Full cold water pressure. Water meter confirms no leaks. For... [Read more]

Baxi Bahama 100 - Hot water problem?

Hi there to anyone who can possibly help me with the above problem. The boiler works fine for central heati... [Read more]

How can i fix my Boiler. Ocean Alpha 240P?

When i run the hot water taps or have a shower all the radiators start to get warm as well and the water tempe... [Read more]

High pressure on my Optima Ferolli 901 central heating?

Hi, I have a Ferroli optima 901 . I had problms with the DHW and foolishly adjusted this on the mod gas valve... [Read more]

Problems with Ravenheat Combi RSF Fanned?

Boiler has no markings on, but have manual that says... Fanned Combi RSF 84E - RSF 100E RSF 84ET - RSF ... [Read more]

Worchester Bosch 280 RSF will not supply DHW?

My boiler works OK when used on CH, but will not supply DHW when the boiler is cold, if the boiler has been he... [Read more]

FER (Ferroli) combi boiler.sre no 0126L8129?

C/H working ok. Hot water temperature is not regulating and gets dangerously hot. Termister is clean and che... [Read more]

f.25 fauly code?

i have a vaillant ecomax combi boiler,every now and then it shows me the fault code f.25.in the book this says... [Read more]

Should my combi boiler come on when the cold tap is used..??

I have recently had a Glowworm combi (30cxi) installed - everything appear to be working fine, but I have noti... [Read more]

Advice desperately needed: no hot water or heating?

I am a new house owner and are having issues with the central heating and hot water. As of sunday, it went off... [Read more]

Lukewarm radiators and fluctuating water temperature?

I have a Baxi 105e combi boiler. The problem started about 2 months ago. The boiler fires up as normal, but th... [Read more]

worcester 28si II boiler?

from a cold start my worcester boiler pressure is 1 bar, but when i switch the central heating on and it warms... [Read more]

how can I fix my biasi boiler - model M90E.245?

The boiler goes on and off and doesnt provide constant hot water (so showers turn from hot to cold very quickl... [Read more]

Central heating won't start up on Sime Formula 80?

From a cold start my Sime Formula 80 will not start the central heating. The boiler will fire up for a few sec... [Read more]

my potterton performa 24 the hot water has problem - it comes hot and the?

the hot water comes hot and then cold, hot, cold, hot. Is heat exchanger or diaphragm or do i need to power... [Read more]

how can i fix my glow worm 30 cxi?

Hi, I have a glow worm 30cxi boiler and have a problem that hopefully someone can help with. The problem... [Read more]