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We have 612 questions about mending 'water not hot boiler fires up'

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Mend Heating, Home Heating Systems

how can I fix my euro combi ariston A/23?

when I open the boiler it starts to do clicking noises and then firing up and it then stops and fires up and ... [Read more]
Mend Heating, Home Heating Systems

Drayton Digistat SCR not firing boiler?

Help, My drayton digistat scr is not firing up the Worcester/bosch 24i junior boiler. The scr is communicati... [Read more]
Mend Heating, Home Heating Systems

ravenheat csi 85 a [t] boiler?

main burner fires up on off repeatedly, heating water gets hot, domestic gets hot for few minuits then runs co... [Read more]
Mend Heating, Home Heating Systems

Pressure fault on Worcester 28Si II?

Hi. I'm repairing my boiler after it froze. I have the central heating working now (pump and flow sensor damag... [Read more]
Mend Heating, Home Heating Systems

Lockout?

I have a Worcester Bosch heatslave 20/25, 7 years old, serviced every year. Boiler has stopped working, no ... [Read more]
Mend Heating, Home Heating Systems

red light on vokera compact boiler?

my boiler keeps firing up and the green light flashes but then turns red. The system then re-fires and it turn... [Read more]
Mend Heating, Home Heating Systems

ravenheat white star 100?

the boiler will fire up on hot water and heating after a few seconds it shuts down, it will keep coming on the... [Read more]
Mend Heating, Home Heating Systems

only water no heat?

hi i have a ravenheat rsf84e bolier wont fire when water and heating selected if hot tap is run boiler fires b... [Read more]
Mend Heating, Home Heating Systems

intermittent problem with central heating valve not opening?

We have a Drayton wireless for our central heating, and a Drayton ZA5679-2 2 Port motorised valve also for hea... [Read more]
Mend Heating, Home Heating Systems

worcester bosch 537i gas combi?

open dhw tap - boiler fires and goes to full fire fan on pump on no hot water
Mend Heating, Home Heating Systems

Saunier Duvall F30E Hot water but no heating?

Hiya. Hot water operates fine however....demand for heat , boiler fires up ok, temp display increases to 77 de... [Read more]
Mend Heating, Home Heating Systems

suprima 40l pls help?

boiler only fires up when hot water and heating on new three port valve/new pcb/new over heat valve runs fo... [Read more]
Mend Heating, Home Heating Systems

how can i fix?

my wallstar boiler does not fire up when i switch the central heating on however if I switch the hot water on ... [Read more]
Mend Heating, Home Heating Systems

Ravenheat Combi Boiler problems?

I have a Ravenheat CSI 120(T) low nox boiler installed 29 October 2010. Since then I have had four visits fro... [Read more]
Mend Heating, Home Heating Systems

boiler cuts of when hot is called for?

when i turn on the hot water when the boiler is running is cuts out then want start untill i turn room stat d... [Read more]
Mend Heating, Home Heating Systems

Help - water working, but not heating?

My Vaillaint boiler has had 8 engineers out in 7 weeks and still the heating won't switch on. The exchanger h... [Read more]
Mend Heating, Home Heating Systems

can anyone help- Domina 80E CH fault?

I can get hot water easily and constantly but the central heating doesnt work properly. The CH comes on when i... [Read more]
Mend Heating, Convector Heaters

Gas boiler fails to fire and safety cut out has switched in?

I have an oldish gas boiler - Potterton Netaheat Profile - which provides both hot water and serves room radia... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Vaillant combi boiler?

I have a vcw-gb 242 combi boiler and now find the central heating wont fire up. When i turn on the hot water t... [Read more]
Mend Heating, Home Heating Systems

How can i fix my Chaffoteaux Minima HE 30 Combination boiler?

Chaffoteaux Minima HE 30 Combination boiler with intermitent hot water. fires up and runs for 20 - 30 seconds ... [Read more]

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