How to mend ... Boiler Ch Water

GlowWorm 24ci boiler high pressure fault?

With the boiler left on, i.e. no demand for DHW or CH, the pressure will remain constant, set at 1.0 bar. Whe... [Read more]

Worcester Heatslave 20/25 Combi-boiler?

Our Worcester heatslave 20/25 combi-boiler seems to have a mind of its own. The hot-water sometimes takes age... [Read more]

how to fix my jaguar 23kw combi boiler?

my hot water is fine but when i put my ch on if say its preset to 50c it will come on go up to 59c then keep c... [Read more]

problem with puma 80 boiler?

The pressure drops regularly,but i cannot see any leaks,Both ch and hot water work ok but after turning hot wa... [Read more]

worcester 350 combi low pressure/leaking?

hi, my combi 350 worcester loses pressure slowly and i have totop it up,the other night it was on low pressure... [Read more]

Netaheat Profile 80e not lighting when call for heat?

I have a 20 year old Potterton Netaheat Profile 80e. Boiler heating water OK all summer. Wanted CH on today ... [Read more]

Vokera Linea Max - hot cycling after re pressurising expansion vessel?

I have re pressurised the expansion vessel to 12psi having isolated and drained the boiler. The vessel now hol... [Read more]

hot water and CH come on together when only one required?

my hot water and central heating comes on together when i only want one on i have a potterton back boiler wha... [Read more]

lost manual F22 and F25 codes?

Hi, can anyone help? New boiler working fine on the hot water side ..now have tried to put on CH..fine for x2... [Read more]

radiators not getting hot?

we have a vokera compact boiler and have had british gas out recently as we have a warrranty out with them but... [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]

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]

How can i fix Ferolli Modena 102?

When calling for hot water,boiler fires up and keeps running. Water sometimes hot but mostly cool.Fitted new h... [Read more]

How can I fix my Greenstar CDi condensing combi boiler?

...after nearly 4 years of fault free operation from new, this morning I had no hot water & a "EA" message dis... [Read more]

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]

CH is ON in the off position and will not turn off?

I have a Halstead Finest Combi boiler, which the CH automatically came on at night and unable to switch it off... [Read more]

Halstead ace high boiler, ch not working?

my central heating is not working but the hot water is fine, think it may be the diverter valve but not sure

ace high boiler problem?

replaced diaphram and diverter valve service kit , ch working ok , in dhw only mode both central he... [Read more]

centrel heating boiler problem?

when hot water is not in use and ch switch is on minimum the disply panel shows c instead of o and the pump ke... [Read more]