How to mend ... Boiler Dhw Heating

Heatslave 15/19 boiler - keeps kicking in?

i All, We have a heatslave 15/19 which was fine until a couple of days ago. A guy came round from the water... [Read more]

Glow Worm Ultimate 50FF making "popping" noises?

During heating my 50FF boiler is making popping noises almost as if the water is boiling inside. It is not hap... [Read more]

Baxi 105e instant fan continues to run and will not switch off?

Hi there. I have a Baxi 105e instant boiler. When heating DHW it goes through correct sequence as described... [Read more]

central heating not working?

I have a biasi 24s combi boiler. Dhw working but heating not working, flow pipe from boiler and first radiator... [Read more]

vaillant vcw-gb 242 eh not igniting to either heat dhw or ch?

boiler was drained to look at water valve diaphragm as central heating was not working (ie) diverter valve no... [Read more]

DHW sometime hot, sometimes not?

Hello, I've got an Ocean Alpha 240eco combi boiler. The DHW has gone tempromental, sometimes it gets hot som... [Read more]

Ravenheat LS 100T no DHW?

First off I have had this boiler for 2 yrs now and never had a problem before, the other day all of a sudden I... [Read more]

Ravenheat CSI 85 no DHW unless CH on?

Hi, I have a problem with a Ravenheat CSI 85 (18 months old) which will only give DHW when the CH is on. ... [Read more]

Biasi boiler M90f.28s, thatwon't fire up!?

my combi boiler will give me dhw okish but the water temp knob and therefore the volume of gas to the jets r... [Read more]

Ravenheat CSI 85AT boiler tripping problem?

Ravenheat condensing combi boiler CSI 85AT fault? My 1.5 year old boiler has developed a random & intermitt... [Read more]

Ravenheat condensing combi boiler CSI 85AT fault?

My 1.5 year old boiler has developed a random & intermittent tripping fault, in both modes of heating (i.e. CH... [Read more]

trouble with a protherm 80e?

help need when turning on hot water boiler dus not fire up but wot dus come up is on the self diagnostic digit... [Read more]

Potterton Performa 24 combi boiler on off cycling problem?

My Potterton Performa 24 combi boiler ignites correctly but only stays on for a minute initially then switches... [Read more]

Baxi 105e - Radiators heat up when dhw flowing?

When hot water (dhw) is flowing then the central heating system heats up as well. The Boiler is set to dhw on... [Read more]

Problem with Potterton 80e?

Potterton 80e DHW problem. When I turn on hot tap boiler does not start. If I turn tap off & back on about 1... [Read more]

ravenheat rsf820/2t?

boiler wont fire when asking for hot water.in summer/winter mode or just summer mode.can only get hot water if... [Read more]

Vaillant VCW GB 242 EH - burner keeps burning with Heating off and DHW Off?

DHW works fine, Boiler on with tap opened, off with tap closed, but reignites after a few seconds on low flame... [Read more]

Fixing a Baxi 105e Combi which reports a fault when cold, works when reset?

Hi - this has baffled me and the heating engineer I've called in to look at it. My Baxi 105e has been reportin... [Read more]

Puma 80 overheats and shutsdown when DHW switched off?

This 8 year old Potterton Puma 80 has had first a new diverter valve fitted, and now a circuit board, but stil... [Read more]

DHW pressure dropping after tap turned on?

Boiler: Baxi Genesis 80. About 15-45 seconds after the hot tap is turned on the flow will slow to a trickle a... [Read more]