How to mend ... Valve Dhw Flow

Why does my Aplha 280E Boiler fail to light now & again?

My Alpha 280E boiler has the following problem -9 times out of 10 it is OK. Sometimes, you switch on the combi... [Read more]

Alpha CB24 no hot water?

Am I right in thinking it is the diverter valve or DHW flow switch that is the problem? Green light bleeps, bu... [Read more]

DHW flow switch sticking/leaking?

I hope someone can give me some ideas? I have a Halstead Finest Gold and I am experiencing a problem with the ... [Read more]

Potterton Puma 80 - No hot water?

Potterton Puma 80 works fine with central heating, but without CH on, it does not produce hot water. At hot wa... [Read more]

why does my combi boiler run a full pelt?

I have an alpha 240 eco combi boiler. On Monday i came home to find the heating had stopped working. On inspec... [Read more]

halstead combi dhw fault?

have an ace high combi model which responds and ignites to dhw demand, yet the water stays luke warm then some... [Read more]

How can I fix my Potterton Puma 100?

I have a Potterton Puma 100 which keeps closing down. I seem to cure the problem for a while but then it shut... [Read more]

how do I fix the leak from the back of the DHW flow valve in my alpha 280E ?

I have a dribble of water coming from the back of the DHW flow valve in my alpha 280E combi boiler. I have tak... [Read more]

Valiant vuw 242/1e dhw fault?

Have a client with above boiler who's dhw would only work when there was a large demand-eg tap belting out. G... [Read more]

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]

Worchester Bosch 280 RSF will not supply DHW?

My boiler works OK when used on CH, but will not supply DHW when the boiler is cold, if the boiler has been he... [Read more]

vokera 80 e combi boiler no hot water?

You have told me that the problem could a faulty flow valve. I have just had the dhw microswitch replaced, is... [Read more]

Expansion vessel replacement?

Hi all, I have a Glowworm 80e combi with pressure issues. Low pressure on the gauge (sub 0.5bar). Fillin... [Read more]

The hot water on my Alpha Ocean 240e is only just tepid!!?

I have an Alpha Ocean 240e, It's keeping the radiators nice and warm but the DHW only gets hot if you run the ... [Read more]

Ferroli Modena 80e won't fire up, D.H.W or C.H?

When i put a call in for DHW or CH everything starts ok but the burners dont fire up, there is a spark, i have... [Read more]

DHW sometime hot, sometimes not?

Hello, I've got an Ocean Alpha 240eco combi boiler. The DHW has gone tempromental, sometimes it gets hot som... [Read more]

i have a glow worm swift flow 80 combi boiler, need help to repair?

dhw was intermittent and now i'm lucky if the heater fires up at all the pilot light is ok , i have fitted a n... [Read more]

Ravenheat combi boiler LS80T (Little Star) 3 way valve emergency valve?

I was replacing the low water pressure switch on my ravenheat combi boiler and found it clogged with that magn... [Read more]

DHW problem Vaillant Turbomax Plus 828E?

If I open the cold water supply valve to the boiler fully, when drawing hot water the temp. rises to approx 83... [Read more]

Puma 80 overheats and shutsdown when DHW switched off?

This 8 year old Potterton Puma 80 has had first a new diverter valve fitted, and now a circuit board, but stil... [Read more]