How to mend ... Boiler Water Keeps Cold

how to fix my reno HE30C combi series johnson & starley ?

my boiler is all on. my hot water is fine. but when i flick the switch up to put central heating on its not tu... [Read more]

ravenheat csi primary aaa ?

boiler fires upfor about 1 minute then shuts down for 10 mins then fires up again from cold its a new boiler b... [Read more]

Fault with Boiler?

I currently have the above domestic boiler, which is approximately 4 years old. Recently I have been having pr... [Read more]

I have a Ferroli F30 combi boiler?

The DHW doesn't run hot all the time (running cold after a couple of minutes) also the boiler bar pressure kee... [Read more]

vaillant ecomax 824e flashing e20,e13,f20. How to fix it?

Thing is, that my boiler (which is vaillant ecomax824e) use to go through these codes e20 and then f 20, or e1... [Read more]

ravenheat h85t looses pressure on ch only?

I have had my boiler switched to dhw only through summer ,now its dropped cold but back to ch/dhw works fine o... [Read more]

saunier duval F30E therma condens boiler. hot water not working ?

I have a f30e therma condens boiler, in the summer i had hot water great but i turned on the heating the other... [Read more]

Worcester 28 CDI with DHW fault?

When I turn on my hot water tap, the combi boiler fires up its usual way and supplies hot water but after 1 mi... [Read more]

Programming Honeywell CM921?

Hi: The heating engineer installed this unit during installation of a new boiler. This is a 1 day wireless pro... [Read more]

Glow Worm Compact 80E switches on without the tap !?

This morning I heard clicking and went to the boiler and noticed the domestic water heater switches on and off... [Read more]

How do I get my Ariston micogenius comb boiler to ignite?

I have a microgenius combi boiler. A couple of days ago my bath and shower water temp dropped and both were lu... [Read more]

no hot water evrything fires up?

Hi need help. Iv`e got a sime super90 I fitted a new diverter valve and micro switch about 8 months ago. Ever... [Read more]

TRVs not working?

I had a new combi boiler fitted about a year ago but it was only used for hot water but I recently had central... [Read more]

how do i turn down the water temperature on my worcester 24i boiler???

everytime i try to use the shower i either get scalded or i freeze, there is no hot water temp control on the ... [Read more]

My shower and hot water taps are running cold?

I have an ideal slimline classic boiler and the piolt light is on and it seems to be working. However i have j... [Read more]

how can i fix my 26cdi boiler no hot water?

hot water comes on goes cold after 2 mins auto air vent opens then closes water heats up then goes cold after ... [Read more]

how can i fix 26cdi boiler no hot water?

hot water comes on goes cold after 2 mins auot ait vent opens then closes water heats up then goes cold after... [Read more]

No hot water ?

Boiler, fires up and produces about 1 litre of hot water, then runs cold . Boiler flashes, F14.

Help with hot water feed on my Potterson Performa 28 boiler?

Hi, We have a strange issue in our house where the hot water is working, but not for every sink in the hous... [Read more]

cold water supply jammed?

Hi, I have Ravenheat Combi boiler. I turned of Cold water supply to the boiler yesterday to replace leaking pi... [Read more]