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We have 298 questions about mending 'hot water dhw'

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Mend Heating, Home Heating Systems

How do I fix my Worcester Heatslave 20/25 combi?

If I run the hot water for a few minutes the temp drops to about 20 degrees, I've turned up the dhw thermostat... [Read more]
Mend Heating, Home Heating Systems

error code 5 on maxol supacombi he 28?

hi all . error code 5 keeps coming on when the boiler is either heating up dhw or ch . flame is light and wate... [Read more]
Mend Heating, Home Heating Systems

Why has Heat Exchanger on IDEAL ISAR HE24 gone?

So... At the end of 2008 (early December, so about 4.5 years ago). We had central heating installed for the... [Read more]
Mend Heating, Home Heating Systems

new worcester 550I combi boler?

When the hot tap is opened fully the temp of the water increases until the boiler trips out .Worcester service... [Read more]
Mend Heating, Home Heating Systems

Ravenheat csi 85t?

No ch,no hot water,green power light on,red light stays on/lockout.no 240v at pump or fan.checked fuse,changed... [Read more]
Mend Heating, Home Heating Systems

Halstead finest gold, no hot water, only when heating is on?

Halstead finest gold, only get hot water when heating is on for a few minutes. Otherwise no hot water at all? ... [Read more]
Mend Heating, Home Heating Systems

ravenheat csi85a ch problem ?

dhw working fine but boiler cycling when in ch mode.boiler will light and go out after about ten seconds and g... [Read more]
Mend Heating, Home Heating Systems

how can i fix my boiler?

i have a vaillant turbomax 242e changed diverter valve but still not getting hot water .gasman told me dhw hea... [Read more]
Mend Heating, Home Heating Systems

dhw?

Hot water gets to 50 then turns off till temp drops then comes back in
Mend Heating, Home Heating Systems

My halstead ace30 DHW not getting hot ?

The boiler fires up ok but the water I only Luke warm the CH is ok tried altering the control an resetting but... [Read more]
Mend Heating, Home Heating Systems

glowworm betacom 30 problem?

Hello folks, boiler is 2 years old, had plate heat exchanger cleaned/changed/cleaned...dhw sensor replace... [Read more]
Mend Heating, Home Heating Systems

problems with hot water on heatline viso 24?

i have hot water but it keeps getting cold and then hot and keeps fluctuating. I have cleaned the dhw exchange... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Saunier Duval Semia Condens boiler?

The Central Heating (CH) side works perfectly but the Domestic Hot Water (DHW) has developed a problem, thus..... [Read more]
Mend Heating, Home Heating Systems

Ferroli Modena 102 luke warm hot water?

Any help have Modena 102 sometimes when 1st time calling CH the gas flame is very low if flame doesn't spread ... [Read more]
Mend Heating, Home Heating Systems

Powermax 155 mixer valve design?

I have a Powermax 155 boiler. It has a mixer valve supplying DHW. Mine allows hot water to descend into the co... [Read more]
Mend Heating, Home Heating Systems

vokera combi hot water issue?

Hi My hot water tap has to be on full flow in order to trigger the boiler to fire up. Can it be adjusted to f... [Read more]
Mend Heating, Home Heating Systems

halstead ace he 30 dhw problem?

Hi All, I wonder if there is someone out there who can help with a very strange fault on a Halstead Ace HE... [Read more]
Mend Heating, Home Heating Systems

halsted boiler problem?

i have a halsted ace he 30 combi boiler. when i turn on the hot water,the rads warm up,although i have only s... [Read more]
Mend D.I.Y, Plumbing

Valliant turbomax VUW282/1 e - Hot water problems?

Where to start - When we turn on the hot tap we don't get hot water unless we turn it on full. It runs for ... [Read more]
Mend Heating, Home Heating Systems

diverter valve not operating?

Hi I am having a problem with my potterton performa 28i boiler. Central heating works fine. Dhw giving cold ... [Read more]

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