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We have 298 questions about mending 'hot water dhw'

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Mend Computers, Desktop PCs

trouble with a protherm 80e?

help need when turning on hot water boiler dus not fire up but wot dus come up is on the self diagnostic digit... [Read more]
Mend Heating, Home Heating Systems

One hot water tap only gets warm, others in house get HOT?

Hi I have a Glow Worm Compact 100p (permanent pilot) providing CH and DHW. All the hot water taps work fin... [Read more]
Mend Heating, Home Heating Systems

Baxi 105e - Radiators heat up when dhw flowing?

When hot water (dhw) is flowing then the central heating system heats up as well. The Boiler is set to dhw on... [Read more]
Mend Heating, Home Heating Systems

i can get hot water but no c.h. baxi condencing boiler?

i can get dhw but the boiler will not fire up when i switch to c/h
Mend Heating, Home Heating Systems

worcester bosch 28cdi DHW problems?

Hi, having had at least a couple of years good use of this boiler,recently the hot water when run for 2 or 3 m... [Read more]
Mend Heating, Home Heating Systems

worcester bosch 28cdi DHW problems?

Hi, having had at least a couple of years good use of this boiler,recently the hot water when run for 2 or 3 m... [Read more]
Mend Heating, Home Heating Systems

ravenheat rsf820/2t?

boiler wont fire when asking for hot water.in summer/winter mode or just summer mode.can only get hot water if... [Read more]
Mend Heating, Home Heating Systems

pilot light goes out dhw potterton puma 80?

pilot light keeps going out on hot water linked out overheat stat & hot water worked fine replaced overheat st... [Read more]
Mend Heating, Home Heating Systems

My Alpha combi boiler has very low water pressure at the DHW hot tap?

My Alpha Ocean 280p Combi Boiler has a very low DHW pressure and flow. I have checked the cold water inlet fil... [Read more]
Mend Heating, Home Heating Systems

ravenheat 24t ls 80t white star?

boiler is a 15 months old the water started going very hot then cold the3n hot then cold at fairly low tempera... [Read more]
Mend Heating, Home Heating Systems

Glow worm Compact80e hot water failure?

Intermittent failure. Shower sometimes fails to deliver hot water. If tap turned on then delivers. Suggeste... [Read more]
Mend Heating, Home Heating Systems

Worcester 28CDi Intermittant hot water?

When running hot tap hot water keeps going cold for a few seconds then comes back on. Watching the lights on f... [Read more]
Mend Heating, Home Heating Systems

CH OK no HOT WATER on Vaillant Turbomax Plus 824E ?

Central heating works fine, but not hot water on any taps. When I turn the taps warm water coming for few SECO... [Read more]
Mend Heating, Home Heating Systems

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]
Mend Heating, Home Heating Systems

vokera excel 80 E combi does not give hot water in DHW mode?

It gives hot water in the taps only when CH mode. Some times in DHW mode it attempts to fire and the fan may c... [Read more]
Mend Heating, Home Heating Systems

Fixing a Baxi 105e Combi which reports a fault when cold, works when reset?

Hi - this has baffled me and the heating engineer I've called in to look at it. My Baxi 105e has been reportin... [Read more]
Mend Heating, Home Heating Systems

No DHW?

I installed a new pump, on SIME 102 super, central heating is fine but domestic hot water doesn;t work
Mend Heating, Home Heating Systems

Ferroli Modena 102 DHW not regulating?

The hot water is always very hot even at the lowest thermostat setting, will it be a faulty thermister or some... [Read more]
Mend Heating, Home Heating Systems

DHW pressure dropping after tap turned on?

Boiler: Baxi Genesis 80. About 15-45 seconds after the hot tap is turned on the flow will slow to a trickle a... [Read more]
Mend Heating, Home Heating Systems

What`s wrong potterton puma 80?

System lock-outs, Low system pressure System over pressures, sometimes no water flow through heating system b... [Read more]
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