How to mend ... Boiler Keeps Going Cold

My Biasi Boiler whisltes in a morning?

When the heating is set to come on early in the morning it makes a whistleing sound for about half an hour. It... [Read more]

no heat?

i have a ideal concord cx boiler it kicks in for about 5 mins some rads get warm some cold and some red hot an... [Read more]

Why do the diaphragms in my Vokera XL80sp keep perishing?

Ive had the boiler for about ten years now and its been reliable apart from the main (large) diaphragm in the ... [Read more]

boiler keeps going on and off (combi alpha 240e)?

when heating is on the boiller keep comeing on then going off, so radiators are hot then cold hot then cold, i... [Read more]

Sime hot water?

Boiler Sime Planet 100e Combi boiler. The hot water delivery varies from hot to cold. The diaphram in the di... [Read more]

combiboiler minic24 hot water problems?

i have a combi mini c24 heating/hot water boiler and when i turn the taps on the hot water do... [Read more]

Sime Format 80 C?

Hello, My Mothers Sime boiler has started to leak, the leak is just above the Cold Water Inlet for the Direct ... [Read more]

Hot water has stopped working on Vokera excell 80 SP?

Hot water has stopped working on Vokera excell 80 SP. I have tried to get water in every combination on my boi... [Read more]

Problem with hot water on Valiant Combi Boiler?

When we are running hot water through our valiant combi boiler, the water cycles though hot and cold and never... [Read more]

Hot water problems, cylinder not getting hot?

I have a back boiler heated vented system, there is central heating but no hot water after i flushed the sedim... [Read more]

Combi boiler-pressure low-hot water ok?

Hi, I have a Vaillant Turbomax 242/282e boiler and the pressure has dropped to 0.5. Hot water is fine from al... [Read more]

How to maintain the pressure from a combi boiler?

The hot water system in my house is supplied from a combi boiler, hot water on demand. The system works good,... [Read more]

water problems?

the hot water keeps going off when running water either for a shower or just washing the dishes it comes throu... [Read more]

Boiler fires up when demand for hot water but doesn't when demand for C/H?

I have a Potterton Netaheat Profile 80e boiler, Honeywell V4073A mid-position valve, Honeywell ST699B programm... [Read more]

Ariston A23/MFFI - no hot water without heating?

Hi everyone, something is wrong with my boiler. From sometime the hot water is too hot then getting cold and... [Read more]

Spare Parts for vokera 20/80 rs flowmatic?

I've got a suspect differential pressure switch (hot water goes from hot to cold, the diff press switches on t... [Read more]

I have CB24 Boiler and my water keeps running cold . ?

Over the last 20months (I am in a new built flat) I have had a plummer out 4 times and everytime they say the ... [Read more]

Do I have an air lock?

I have a gas boiler downstairs which heats water and a storage tank upstairs. My cold water supply has stoppe... [Read more]

my shower starts of hot then runs cold with vokera excell combi boiler?

can anyone tell me what would cause my shower to be hot then run cold? happens with hot water taps to?

Pipework Mix Up?

Hi there I recently relocated some pipework so that I could fit more ceiling joists to reinforce our loft conv... [Read more]