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We have 217 questions about mending 'system hot works'

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Mend Heating, Home Heating Systems

Ferroli Optimax - no hot water ?

Hi, I hope someone can help me. I have had no hot water or heating for over 5 weeks. I have boiler cover thro... [Read more]
Mend Heating, Home Heating Systems

central heating Works but no hot?

Central heating works, boiler on, power on, all ok from tank (system mate) there are 2 pipes 1 label hot wat... [Read more]
Mend Heating, Home Heating Systems

my mains 24e baxi potteron make will not light up?

i have mains 24e gas boiler 2 weeks ago i found that hot was not as hot as normally it gives .i called the en... [Read more]
Mend Heating, Home Heating Systems

baxi 551 boiler and fire?

system works fine all day all radiators on and hot, water tank hot, then rads start to cool down, water still ... [Read more]
Mend Heating, Home Heating Systems

Could boiler heat exchanger be clogged?

My boiler seems to take ages to deliver hot water to the taps... over a minute, more to bathroom which is loca... [Read more]
Mend Heating, Home Heating Systems

heating system?

I had a glow worm 24hxi boiler fitted to my existing y plan system using the original controls(programmer,room... [Read more]
Mend D.I.Y, Plumbing

Hot Water Failing?

My Midas SI has problems sustaining hot domestic water, the heating system is ok, the hot water works for a ti... [Read more]
Mend Heating, Home Heating Systems

second pump system?

hav recently installed a wood burning boiler stove , the system with adition of 2 gate valves to route and con... [Read more]
Mend Heating, Home Heating Systems

how do I fix my Danfoss thermostatic cylinder valve?

The Danfoss thermostatic cylinder valve has stopped letting water into the hot water tank. I have removed t... [Read more]
Mend Heating, Home Heating Systems

fault f20 ecotec exclusive?

my heating system has just started playing up. the boiler switches off when you turn on the hot water tap the... [Read more]
Mend D.I.Y, Plumbing

Air lock in hot water system?

central heating works ok, but no flow through hot water cylinder
Mend Heating, Home Heating Systems

Pressure fault on Worcester 28Si II?

Hi. I'm repairing my boiler after it froze. I have the central heating working now (pump and flow sensor damag... [Read more]
Mend Heating, Home Heating Systems

vokera unica 28e no hot water?

My boiler and central heating system were installed 5 months ago. No problems until three days ago when we wok... [Read more]
Mend Heating, Home Heating Systems

"Clicking" sound inside Ideal Classic boiler?

My boiler has started to make a clicking sound intermittently. It can run for hours without a noise, then the... [Read more]
Mend Heating, Home Heating Systems

Ravenheat CSi 150 CH problem?

Hi My HW works fine, but when i put the CH system on the rads warm up nice and hot the boiler stops as expecte... [Read more]
Mend Heating, Home Heating Systems

Vokera Linea, plenty hot water, no heating?

I am unable to turn on my heating, either by using the timed clock or manually. The hot water still works when... [Read more]
Mend Heating, Home Heating Systems

Why is the LCD screen on my Optima 701 blank? (And how do I fix it?)?

Since I moved into this flat, the screen on the CH boiler has been blank, like there's no power getting to it.... [Read more]
Mend Heating, Home Heating Systems

pipes banging noise?

hi there i have a baxi wall mounted boiler on a single pipe system and when i put the heating on there is a l... [Read more]
Mend Heating, Home Heating Systems

Boiler cuts out when CH set to on?

I have a potterton system with a 2002 timing controler and a PT2 remote electronic thermostat. If the system i... [Read more]
Mend Heating, Home Heating Systems

i have just had my combi serviced?

i have a ferrori 701 combi boiler, the heating works and so does the hot water, i have had to change the prv a... [Read more]
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