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Mend Heating, Home Heating Systems

How do I lower the pressure on a combi boiler?

My pressure is too high. It is recommended to be between 1 and 2.5 and it is on 4. I have tried bleading the r... [Read more]
Mend Heating, Convector Heaters

alpha cb24 boilers?

I have an alpha cb24 boiler which was installed over 4 years ago,for the last week or so i have been unable to... [Read more]
Mend Heating, Home Heating Systems

valiant combi VCW GB 242EB?

i have supply of hot water through my combi boiler but the heating does not fire up? also the pressur keeps d... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Thema classic F30E?

The seal has gone on the diverter valve allowing water to leak into it's mating part rendering both parts knac... [Read more]
Mend Heating, Home Heating Systems

Further to Heating, but no hot water!?

With ref to the previous (very prompt answers) It's a pumped system! Can I still bleed as per answer 3 or is... [Read more]
Mend Heating, Home Heating Systems

My Glow warm Space saver MK II boiler -buzzing sound?

My Glow warm Space saver MK II boiler makes buzzing sound when the heating or the hot water is switched on. Ca... [Read more]
Mend Heating, Home Heating Systems

Potterton Puma 100e Low Pressure?

I have replaced the safety valve and thermostat on my boiler, when the system pressurises to about 1bar the lo... [Read more]
Mend Heating, Home Heating Systems

My Vaillant VCW combi-boiler doesn't provide hot water for bath?

Although all the controls are turned to maximum my Vaillant VCW GB 242 EH combi-boiler doesn't provide hot wat... [Read more]
Mend Heating, Home Heating Systems

worcester 15RI lockout problems?

hi,I need help with my greenstar 15 RI which keeps going into lockout. The boiler is just outside guarantee,an... [Read more]
Mend Heating, Home Heating Systems

wot is up with my boiler chaffoteaux and maury?

when in use piolet light goes out chaffoteaux and maury and when running hot water
Mend Heating, Home Heating Systems

How can i increase the water pressure on my worcester 350 combi boiler?

How can i increase the water pressure on my workcester 350 combi boiler. The pressure is low (below 1/2) but ... [Read more]
Mend Heating, Home Heating Systems

worcester 24i rsf fault with heating?

After heatings been on for around 10 mins starts to make noise like air in the boiler ,Changed the pressure va... [Read more]
Mend Heating, Home Heating Systems

Intermittent Hot Water?

Hot water is luke warm and fluctuates in temperature. On boiler controls temp goes from 70 to 80 and then dro... [Read more]
Mend Heating, Home Heating Systems

Worcester Bosch 240 - reset switch problem?

Hi, I am in need of some help, I have a problem with my Worcester Bosch 240 boiler. I have already replaced th... [Read more]
Mend Heating, Home Heating Systems

Valiant boiler but no water out of hot taps?

We have a valiant boiler and have no water at all coming out of the hot taps or shower. The pressure gauge is ... [Read more]
Mend Heating, Home Heating Systems

Valient boiler no hot water?

we have have a combi valient boiler and we used to get hot water fine, we then only had hot water when the boi... [Read more]
Mend Heating, Home Heating Systems

Ravenheat CSI 85 Boilern fault?

The only way I can get my central heating to work is if I switch the boiler of at the mains leave for an hour ... [Read more]
Mend Heating, Home Heating Systems

Heating, but no hot water!?

Had to change a rad, so drained down compleat system, inadvertantly drained hot water as well!! refilled and b... [Read more]
Mend Heating, Home Heating Systems

potterton performa 24 / combi boiler?

no hot water-no heating/ no ignition light / does not appear to be igniting/pump working pressure ok
Mend Heating, Home Heating Systems

how can i fix my ferroli optimax 25c boiler?

the hot water works fine but the heating will not work if i press the mode button 3 times it comes on for 15 m... [Read more]

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