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We have 389 questions about mending 'water heat exchanger'

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Mend Heating, Home Heating Systems

Vaillant Combi VCW 25/1 T3 Hot water temperature lowish?

My boiler has been in operation since 1983 and I have replaced various parts over the years so am fairly happy... [Read more]
Mend Heating, Home Heating Systems

Worcester 350 combi not heating domestic hot water?

I have a worcester 350 combi that works ok on the central heating side, but randomly fails to light when drawi... [Read more]
Mend Heating, Home Heating Systems

replace the water to water heat exchanger in my worcester bosch 28cdi combi?

The manual tells me to remove the filling loop by removeng the two holding scews and then slide the assemble t... [Read more]
Mend Heating, Home Heating Systems

Baxi Combi 105e - flame-out problem?

My boiler runs oK on CH & hot water. However if I shut the CH off from the Controller ,the Boiler keeps runnin... [Read more]
Mend Heating, Home Heating Systems

HOW CAN I STOP OVER PRESSURE?

VOKERA EXCELL 80SP - Have recently had Expansion Vessel, Press Releif Valve and Heat Exchanger replaced. Press... [Read more]
Mend Heating, Home Heating Systems

how can i fix my ideal isar he24 condencing combi boiler?

the boiler fires up every 5 minutes to preheat the water in the domestic hot water heat exchanger.The manual s... [Read more]
Mend Heating, Home Heating Systems

Protherm 80e - Heating cuts out before radiators warm?

Hi Hope somebody can help I have a Protherm 80e combi boiler. In the last two day's the central heatin... [Read more]
Mend Heating, Home Heating Systems

Having problems with Vokera 28 linea boiler - hot water off and on?

My problem is that my vokera 28 linea boiler is playing up. When you put on the hot tap the water comes out ve... [Read more]
Mend Heating, Home Heating Systems

Baxi Bermuda Back Boiler - No Hot Water Without Heating On!?

We have Baxi bermuda back boiler which has just had the heat exchanger replaced and a new threee way diverter ... [Read more]
Mend Heating, Home Heating Systems

Valiant Turbomax 282 DHW not very hot?

I have had a 282 for 10 years, repaced diverter valve, diaphams, micro switches etc. The DHW supply has never ... [Read more]
Mend Heating, Home Heating Systems

Pilot light trouble for johnson and starley water exchanger?

Can anyone explain why the pilot light for our J&S water heater keeps going out. Had a new heat exchanger and ... [Read more]
Mend Heating, Home Heating Systems

Water pressure on a Sime 100e combi-boiler?

... after replacing the diverter valve diaphragm, dhw heat exchanger and cleaning the inline filter I'm still ... [Read more]
Mend Heating, Home Heating Systems

Saunier Duval Codens F30 heat exchanger?

My Saunier Duval Codens F30 is always depressurising and also, when it works for sometime, it shows a fault co... [Read more]
Mend D.I.Y, Plumbing

ravenheat 820 no hot water?

i have a ravenheart 820,have previously had to have heating on to obtain hot water,to avoid overheating and st... [Read more]
Mend D.I.Y, Plumbing

High pressure on my Optima Ferolli 901 central heating?

Hi, I have a Ferroli optima 901 . I had problms with the DHW and foolishly adjusted this on the mod gas valve... [Read more]
Mend Heating, Home Heating Systems

No hot water with Worcester 28Si?

We have a Worcester 28Si and are now getting no hot water at all. It started a while ago. The central heating... [Read more]
Mend Heating, Home Heating Systems

my potterton performa 24 the hot water has problem - it comes hot and the?

the hot water comes hot and then cold, hot, cold, hot. Is heat exchanger or diaphragm or do i need to power... [Read more]
Mend Heating, Home Heating Systems

how can i fix my glow worm 30 cxi?

Hi, I have a glow worm 30cxi boiler and have a problem that hopefully someone can help with. The problem... [Read more]
Mend Heating, Home Heating Systems

tepid water from worcester bosch 24cdi?

i am only getting tepid hot water from my combi boiler. central heating working fine. i have change the heat e... [Read more]
Mend Heating, Home Heating Systems

black bits in hoses?

my vokera compact 24 was leaking water behind the pump, to access the leak i removed the hoses from the heat e... [Read more]
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