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We have 228 questions about mending 'water demand heating'

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Mend Heating, Home Heating Systems

Potterton Puma 80 - No hot water?

Potterton Puma 80 works fine with central heating, but without CH on, it does not produce hot water. At hot wa... [Read more]
Mend Heating, Home Heating Systems

Glow-worm Express 100 demand light goes off when I put hot water on?

Can anyone help when the heating is on if I put hot water on the demand light goes off thus water goes cold if... [Read more]
Mend Heating, Home Heating Systems

Worcester Bosch 24CDi, switches off during HWD?

I have a 24CDi boiler, which lately has been switching off when hot water is demanded. It switches off and bac... [Read more]
Mend Heating, Home Heating Systems

Baxi 105e - Flashing HW LED?

The normal graan hot water led keeps flashing after a demand for water. The boiler is firing and eventually th... [Read more]
Mend Heating, Home Heating Systems

heating no hot water?

haveing problems with worcester 24 si boiler working in central heating no problems but will not fire up on ho... [Read more]
Mend Heating, Home Heating Systems

Vaillant VCW GB 182E Combi Boiler?

The boiler provides hot water on demand but the central heating will not come on despite the boiler, thermosta... [Read more]
Mend Heating, Home Heating Systems

vokera 24e boiler doesnt relight?

Usually in the morning, central heating working fine. Then use hot water as normal, but once demand form hot w... [Read more]
Mend Heating, Home Heating Systems

Worcester 35cdi II problem?

Help ! I've got a Worcester 35 cdi II which seems to be ovepressurising when there is a demand. When cental he... [Read more]
Mend Heating, Home Heating Systems

Potterton Suprima 60L no heating but hot water ok!?

Recently my Potterton Suprima 60L started playing up and has a red fault light displayed. It won't reset and h... [Read more]
Mend Heating, Home Heating Systems

Ferroli HE31C - code d1 and d2 - no heating but water ok!?

Hi Can someone help me. I have a brand new (prof. installed) HE31 C and I have scoured the manual but it does... [Read more]
Mend Heating, Home Heating Systems

Baxi combi 105HE boiler fault on the heating side?

I have a Baxi 105HE combi boiler. When the hot water is in demand the boiler will run ok no matter how many t... [Read more]
Mend Heating, Home Heating Systems

Baxi 105HE Heating fault?

I have a Baxi 105HE combi boiler. When the hot water is in demand the boiler will run ok no matter how many t... [Read more]
Mend Heating, Home Heating Systems

Worcester 24i rsf no hot water?

I followed the fault diagnosis and replaced the flow switch. However the boiler reset kept tripping out (overh... [Read more]
Mend Heating, Home Heating Systems

No hot water coming from the boiler?

I hope someone can help. I had a small leak in my kitchen which was easily repaired but the mains water had to... [Read more]
Mend Heating, Home Heating Systems

Danfoss RX1 not responding?

I have a Danfoss TP5000RF wireless programmer and a Danfoss RX1 receiver unit. For some reason the heating has... [Read more]
Mend Heating, Home Heating Systems

heatline 24 boiler?

have moved into a new place boiler has knob missing to turn dial to radiator, although can use tweezers, never... [Read more]
Mend Heating, Home Heating Systems

Why does my Potterton Lynx boiler not work? Please help a single mum!!?

Recently moved into new house and told water and heating working fine (although due to weather I haven't had t... [Read more]
Mend Heating, Home Heating Systems

I can not get C/Heating on VCW GB 242 EH Vaillant Combi Boiler ?

I have just renewed the Divertor valve on my combi I have hot water while switch is in Summer mode, but when I... [Read more]
Mend Heating, Home Heating Systems

Worcester 350 Combi mains fuse blows?

The two amp mains fuse on the 350 combi board near the mains input connector has blown. Replacing same all ok ... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Worcester 240 ?

Central heating working but, no hot water out of taps.I have just replaced the Demand indicator neon,which had... [Read more]
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