How to mend ... Water Central Heating Turned

Central Heating comes on with hot water?

I have a Landis and Gyr electronic timer (seems fine) attached to a boiler which provides hot water via a hot ... [Read more]

my boiler wont kick in when turned onto central heatng?

i have a worcester heat slave 9.24 boiler when i turn the water on the boiler kicks in and works ok however w... [Read more]

How can i fix my Vaillant combi boiler?

The water pressure drops quite fast when the central heating is turned on. Looking at the external overflow p... [Read more]

Why does the Hawk II Optima keep turning on central heating without request?

I have a Hawk II Optima combi boiler which is around 10yrs old. I've pushed the selector switch to the disable... [Read more]

Is my Fan faulty?

After having problems with my boiler not supplying any DHW or CH the last couple of days i am of the opinion i... [Read more]

how can I fix Combi Ideal Response 120. No hot water/central heating?

I am trying to fix an Ideal Response 120. After replacing the Limit stat, when DHW is turned on initially mach... [Read more]

Boiler fires up when demand for hot water but doesn't when demand for C/H?

I have a Potterton Netaheat Profile 80e boiler, Honeywell V4073A mid-position valve, Honeywell ST699B programm... [Read more]

Sime Super 90 - heating comes on when hot water truned on?

My Sime super 90 has these problems: * always heats the central heating when the hot tap is turned on *... [Read more]

how to get hot water?

central heating working but hot no water boiler will not egnite when water hot tap is turned on sime halstea... [Read more]

worcester 240 - no hot water?

No hot water when I turn on one tap, I can sometimes get hot water when two hot taps are turned on at once. c... [Read more]

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]

How can I fix my modena 80 e ferroli boiler?

My central heating boiler is not working. I have switched the thermostat on and the boiler is not firing up. T... [Read more]

Baxi Bermuda boiler not igniting?

My Boiler won't ignite to either heat water for the taps or central heating. The pilot light is on. The thermo... [Read more]

water will not heat up?

Drained central heating system as a pipe was leaking.Put a new piece of pipe in. Turned water back on,put cent... [Read more]

Worcester Bosch 24CDi combi boiler?

When I turn on the hot water tap the water goes to taps and central heating radiators. Water from tap is only... [Read more]

Why does my central heating go on and off without any time settings?

I have a turbomax 828e valianlt boiler which supplies hot water to the taps and the central heating. However, ... [Read more]

how to fix my vaillant 242 e-h combi(fires up when not req)?

My boiler fires up every couple of minutes for about 10 seconds then shuts down again,there is nothing in the ... [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 dow i fix saunier duval hot water is luke warm?

hot water is not hot but luke warm central heating working fine temperature is turned to give max hot water pr... [Read more]

What is causing my boiler to randomly operate the central heating?

My boiler, a Potterton Puma 80e, works fine on the hot water cycle, but randomly operates the central heating.... [Read more]