How to mend ... Boiler Starts Low

Heating/Hot Water Problems with Ravenheat RSF100ET?

Hi Original problem was not very hot DHW, but burner running flat out. Changed both DHW and CH thermistors, ... [Read more]

Not heating properly?

I have Potterton 50 boiler i just have changed the PCB as the engineer faulted for me. But after that, it did ... [Read more]

What's wrong with the Flexiflame 140?

The burners go to low flame (about 6mm) when the room stat stops calling for heat or when the programme ends i... [Read more]

How can i fix my 38cxi ultracom?

Has any one had problems with their cxi ultracom hot water not staying hot when trying to run bath or shower h... [Read more]

chaffoteaux calydra 80 keeps locking out?

hi.......i have a chaff boiler that keeps locking out on no flame detection,the boiler starts the ignition seq... [Read more]

worcester 24i - too high and too low pressure?

hi. i have a problem with my boiler. when i open that filling loop, it fills the boiler but the pressure go... [Read more]

Myson Apollo Boiler - Intermittant Fault?

I have had a problem for some time now that I have had people out to look at and many parts replaced within th... [Read more]

Potterton Prima F80 cold start problems ?

My boiler fails to start from cold but I can get it working by turning down the boiler stat to an almost off l... [Read more]

Ariston EuroCombi won't ignite?

I have an ariston eurocomi boiler, when you try to get hot water or heating it starts pumping water but not fi... [Read more]

Hot water prob - Vaillant Turbomax Plus?

For about the last 6 weeks or so our hot water temp has been very unstable. The boiler fires and heats wat... [Read more]

Worcester 28i rsf intermittent fault?

My boiler has an intermittent fault. It fails to fire up every so often. When this occurs, taking off the low ... [Read more]

My Potterton Puma 80 has pressure build up problem!?

When the boiler is providing hot water only everything is fine, operating without any problem. But when the c... [Read more]

ferroli f 30?

put new thermisters on hw/ ch. still on / off when reaches low temperature, water only warm. removed inner c... [Read more]

saunier duval isomax c/h and hot water working but not hot?

Saunier duval isomax, when i run the hot water it works fine for 5 minuits due to it having a storage tank ins... [Read more]

Worcester 9.24 Electronic D/H/W Problem?

Hi. We have a Worcester 9.24 Electronic. CH work's fine but when we try to use hot water the boiler never kick... [Read more]

Baxi 105e flame failure?

I have a problem where the burner ignites and after a few seconds the flames decrease the ignitor sparks again... [Read more]

how can i fix it and replace parts required on combi vokera20/80rsflowmatic?

when opening hot water tap boiler delays in firing up when it starts the water temperature goes to 60c the sup... [Read more]

squealing noise from biasi combi boiler?

I've not long moved into this house and the boiler has started making a squealing noise when you run the hot w... [Read more]

Intermitantly Glow-worm 38Cxi shakes the house!!?

Our 38cxi mounted on a brick external wall shakes the house - but not all the time. It appears to be when the ... [Read more]

Hot Water intermittent and radiators only warm..Vaillant Turbomax Pus 828E?

I have a 828e Turbomax Vaillant boiler. The temperature on it keeps dropping constantly and then the boiler ki... [Read more]