How to mend ... System Heat Combi

Boiler fires when it shouldn't?

Got a Performa 28 combi. I've noticed that sometimes when no heat or hot water are called, the boiler fires up... [Read more]

recurring rust problem with Vaillant combi/heating?

I have a Vaillant combi VCW280, 5 years old, with Hudevad radiators. We are going through a recurring cycle of... [Read more]

poor hot water from a combi (halstead ace high 102)?

i fitted my boiler a year ago and got a gas man to do the gas and commision the boiler.heating is fine.hot wat... [Read more]

How can fix my Vaillant VCWGB 282EH combi boiler?

My vaillant VCW GB 282 EH boiler failed to heat raditors but hot water supply seems to be working. I found it ... [Read more]

Heat Upstairs But not Downstairs?

I have 6 radiators in my house, 4 upstairs and 2 downstairs. My upstairs radiators are fine but I have a probl... [Read more]

Puma 80e downstairs radiators cold upstairs very warm?

Hi i have a Potterton Puma 80e combi boiler. With the central heating on the upstairs radiators are getting ve... [Read more]

wireing diagram for a ferroli domicompact f30?

I have a ferroli domicompact f30 boiler with a convensinal central heating system. i have lately instaled unde... [Read more]

pressure increases when switched on?

my combi boiler pressure guage increases from 1 bar to 3 bars when swithched on and it only fires up to heat w... [Read more]

Worcester 350 Combi Plate heat Exchanger - Is engineers diagnosis correct ?

We have a Worcester 350 Combi and recently when we have been running the hot water the system has been overhea... [Read more]

How can Ifix my Vokera 12-48 RSE Mynute Combi boiler?

When the power is switched on with the thermostat calling for heat, the fan immediately comes on but the boile... [Read more]

how can i fix sticky divertor valve on worchestor 280 rsf gas combi?

valve is not diverting to allow water to heat up,this happened about 5 years ago and i replaced valve and sort... [Read more]

how do i fill my chaffeteaux et maury sterling pp combi boiler?

My boiler is showing no pressure on the guage and if i try to bleed the rads up stairs there is no water or ai... [Read more]

My radiators are only hot downstairs, what is causing this?

My radiators are hot down stairs, however i can not get heat into them up stairs. I have tried bleeding the ra... [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]

How can i fix my Ideal response 80 boiler?

Hi I was hoping someone could help me please. My combi boiler has stopped working today. The lights are on ... [Read more]

How do you test a circulation pump on a Raven Heat Combi boiler?

Ive got a Ravenheat Combi Boiler (one without a pilot light window). A fw weeks ago it just stopped working. W... [Read more]

My CH boiler keeps blowing out when its windy outside!?

Hi, I hope someone can help me with this one. I have an old Baxi Wm 381 RS CH boiler in a house we just moved ... [Read more]

vaillant gb221h combi?

Domestic hot water fine. When heating calls for heat, the divertor valve plunger pulls in to the valve very sl... [Read more]

My Vokera combi boiler will not ignite?

Can anyone help me: My Vokera Mynute 14e Combi will not egnite when I switch on rads or hot water. I have foun... [Read more]