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Mend Combi Ch Dhw

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We have 64 questions about mending 'combi ch dhw'

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Mend Heating, Home Heating Systems

why does the DHW work and not the Central Heating Worcester 24i rsf combi ?

the pressure is fine the boiler fires up when you run the hot water but the CH is not working. Have put it on ... [Read more]
Mend Heating, Home Heating Systems

britony combi 80 no CH!!?

i have a britony combi 80, it works fine for DHW but when heat is called for the CH it goes through the sequen... [Read more]
Mend Heating, Home Heating Systems

Vaillant VCW GB 242EH combi boiler?

CH flame failure due to low water pressure. re- pressurised but wont ignite. pump , fan & DHW working OK
Mend Heating, Home Heating Systems

Vaillaint COmbi boiler CH turns off after 1minute?

My mumz Vaillant combi boiler (18yrs old) ignites for CH demand then the flow heats up, Return remain cold...a... [Read more]
Mend Heating, Home Heating Systems

Problem with CH only on Ferroli Combi 77 FF boiler?

Hi I have a ferroli combi 77 FF boiler which works fine on DHW and is OK the first time it comes on with CH. H... [Read more]
Mend Heating, Home Heating Systems

Ideal isar combi stuck in DHW, won't fire?

Hello Does anyone know much about Ideals? Mine is stuck in dhw, it isn't firing (no fan no pump either).... [Read more]
Mend D.I.Y, Plumbing

Installing drain off valve?

Hi, I have just bought a 3 bed bungalow and am intending to install a new CH / DHW system via a combi. I ha... [Read more]
Mend Heating, Home Heating Systems

Halstead ace high burner problem?

I have a Halstead ace high combi boiler. I have replaced the diaphrams in the flow switch CH & DHW and removed... [Read more]
Mend Heating, Home Heating Systems

ideal classic combi nf 280?

ch overheat stat keeps tripping.water temp gets very hot while showering and then trips, does not matter if se... [Read more]
Mend Heating, Home Heating Systems

worcester 24i rfs combi problem?

i have fault with my 24i combi. when demand on either ch or dhw is on, the boiler fires, lights but keeps on s... [Read more]
Mend Heating, Home Heating Systems

Baxi Combi 80Eco no DHW?

Hello, I have recently bought a house with a relitively new central heating system. The boiler is a Baxi Co... [Read more]
Mend Heating, Home Heating Systems

Brittony Combi SE Boiler leaking, no DHW?

My Brittony Combi SE Boiler lpg is leaking at the 3 way valve. The DHW works with the CH on but not without it... [Read more]
Mend Heating, Home Heating Systems

while running hot water boiler runs hot & cold for the duration tap is on?

tested gas supply 21 mb flow rate 12 ltr removed heat exchanger dhw clear changed both ch &dhw sensors checked... [Read more]
Mend Heating, Home Heating Systems

No hot water on Worcester 28CDi?

I have a Worcester 28CDi combi. The CH works fine but the DHW has a problem. When i open a hot tap the red lig... [Read more]
Mend Heating, Home Heating Systems

How can i fix my Halsted cOMBI 82?

I CANNOT GET DHW UNLESS MY CH IS RUNNING AND THEN TAKES TIME FOR DHW LIGHT AND BURNER TO IGNITE. WHAT IS THE F... [Read more]
Mend Heating, Home Heating Systems

Combi 80, CH losing pressure quickly?

Hi, just found this website and it seems there are a lot of knowledgeable people in cyberspace. My question... [Read more]
Mend Heating, Home Heating Systems

what would be causing a "pouring" sound from my ferroli modena 80e?

A few months ago the over flow on my ferroli modena 80e combi was in constant over flow and the ch pressure ga... [Read more]
Mend Heating, Home Heating Systems

vokera linea 24 combi boiler?

the gas supply to my Vokera linea 24 pulses ie on 5/6 seconds then off 5/6 seconds off on both dhw & ch.
Mend Heating, Home Heating Systems

Vaillant GB2 EH - Got DHW but no CH and its freezin!?

Hi Guys - am in desperate need for tips on how to fix our Vaillant VCW-GB-282 EH Combi. Installed about Apr 19... [Read more]
Mend Heating, Home Heating Systems

How do I increase my combi boiler hot water temperature above 60*?

Ferolli Maxima 35C. Good animal, had it for 3 years but it niggles me that the DHW is limited to about 60 deg... [Read more]
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