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We have 463 questions about mending 'central heating valve'

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Mend Heating, Home Heating Systems

Vokera Linear 24 timer fault?

The boiler works fine in both hot water and central heating modes until the timer is set. When the time is rea... [Read more]
Mend Heating, Home Heating Systems

Glowworm Ultimate 40FF - main burner keeps going out and relighting?

The pilot lights, its continues to spark then the main burner lights then the main burner goes out after a few... [Read more]
Mend Heating, Home Heating Systems

Why is there hot water but no heating?

I have a glowworm micron 40ff boiler,when hot water is selected on programmer the boiler fires up,but before t... [Read more]
Mend Heating, Home Heating Systems

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]
Mend Heating, Home Heating Systems

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]
Mend Heating, Home Heating Systems

Pipework Mix Up?

Hi there I recently relocated some pipework so that I could fit more ceiling joists to reinforce our loft conv... [Read more]
Mend Heating, Home Heating Systems

valliant boiler?

hi and thanks for taking the time to answer my question.... we cannot get any hot water for bath or shower o... [Read more]
Mend Heating, Home Heating Systems

Could a faulty diverter valve cause lockout when the taps are turned off?

I have a potterton puma 80e. The lockout light is comming on after a shower has been taken. It lights once t... [Read more]
Mend Heating, Home Heating Systems

Vaillant Turbomax 242E problem?

Would be very grateful for your help here, I have a Vaillant Turbomax 242E combi boiler that in the last Two d... [Read more]
Mend D.I.Y, Plumbing

Draining a sealed system and adding a rad?

My daughter and family have moved in to a chalet bungalow and one upstairs bedroom lacks a radiator. My son i... [Read more]
Mend Heating, Home Heating Systems

Help Topping Up Water Pressure on Vokera 20-80 RS Flowmatic!?

Hi there, I've been having a few problems with my boiler (Vokera 20-80 RS Flowmatic), as we are able to get... [Read more]
Mend Heating, Home Heating Systems

worcester bosch 230 combi rsf?

No hot water, only when central heating on. I have identified the problem as being the diaphragm plunger is... [Read more]
Mend Heating, Home Heating Systems

BAXI BAHAMA 100?

I HAVE A BAXI BAHAMA 100 COMBI BOILER, THE CENTRAL HEATING WORKS FINE, BUT THE HOT WATER IS NON EXISTANT! ... [Read more]
Mend Heating, Home Heating Systems

worcester bosch 230 combi rsf?

worcester bosch 230 combi rsf Hi I have a worcester bosch 230 combi rsf and believe the Diverter valve is f... [Read more]
Mend Heating, Home Heating Systems

worcester bosch 230 combi rsf Diverter valve?

Hi I have a worcester bosch 230 combi rsf and believe the Diverter valve is faulty. I have central heating whi... [Read more]
Mend Heating, Home Heating Systems

How can I restore the hot water supply from my Potterton 45 back boiler?

I have a Potteron back boiler for central heating and hot water.Until recently it has all worked OK but now I ... [Read more]
Mend Heating, Home Heating Systems

potterton 50el - heating but no hot water (cont.) - bump?

Hi Hi-spec, Hi Ray, Thanks again for your advice.... but i still have this problem. I have been away for... [Read more]
Mend Heating, Home Heating Systems

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]
Mend Heating, Home Heating Systems

Possibly faulty mid position valve?

As the summer is here I decided to turn my central heating off but keep the programmer on for the hot water. ... [Read more]
Mend Heating, Home Heating Systems

Worcester 9.24 electronic Boiler H/water prob?

Hi The central heating works fine but recently the burner would go off a few minutes after turning on the h... [Read more]
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