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We have 284 questions about mending 'hot water demand'

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Mend Heating, Home Heating Systems

Central Heating problem with Worcester Bosch RSF 240?

I have recently changed my leaking diverter valve on my Worcester Bosch RSF240 combi boiler. The hot water op... [Read more]
Mend Heating, Home Heating Systems

Vaillant Turbomax 828 problem?

This is a strage one! I am not sure whether my diverter valve is on the way out or whether something else is c... [Read more]
Mend Heating, Home Heating Systems

Ravenheat CSI 85AT fires up and goes of every 20 seconds?

I have a Ravenheat CSI 85at that is just over 3 years old. This is the one that does NOT have the honeywell ga... [Read more]
Mend Heating, Home Heating Systems

Halstead Ace High, high pressure rise to 2.5bar when heating is on?

Please help, all rads bled okay, hot water demand fine. But pressure on gauge shows a rise from 0.5 to 2.5bar... [Read more]
Mend Heating, Home Heating Systems

baxi combi instant 105e?

no hot water heating ok burner light on demand light on no taps open?
Mend Heating, Home Heating Systems

sime boiler 80 E?

I have a sime boiler friendly format 80 E. The flame will not ignite when placed under demand either by hot wa... [Read more]
Mend Heating, Home Heating Systems

Can mains gas pressure make Combi Boilers run hot and cold water?

I've been hearing a lot about gas pressure being low in the news due to the excessive demand there has been on... [Read more]
Mend Heating, Home Heating Systems

central heating?

I have a Highflow 400BF system. Recently the pressure has dropped to 1.1 bar, but when I try to top up the gu... [Read more]
Mend Heating, Home Heating Systems

Worcestor 350 HW but no CH?

The burners won't ignite when CH is selected, the demand light comes on but no ignition. When CH is turned off... [Read more]
Mend Heating, Home Heating Systems

How Can I Fix A Potterton EP2002 Heating System?

My daughter has a Potterton EP2002 system with a Potterton Suprima 40L boiler and a MPE322 diverter valve. Th... [Read more]
Mend D.I.Y, Plumbing

no central heating on demand?

when i select CH boiler fails to ignite but when i select just HW i get hot water and central heating is th... [Read more]
Mend Heating, Home Heating Systems

Central heating not working independantly?

Replaced room thermostat as old one damaged, replacement is Drayton Combistat, 3 wire config'. All seemed wel... [Read more]
Mend Heating, Home Heating Systems

Worcester 240 slow pressure rise?

Hi..I have recently replaced two major parts in my Worcester 240: "Diverter Valve".... during the summer 2009... [Read more]
Mend Heating, Home Heating Systems

24i/28i Junior Problem?

Father christmas has brought me an early present! Please help if you can! My boiler knocked off while in use a... [Read more]
Mend Heating, Home Heating Systems

baxi combi 80e intermitent hot water failure and pessure droppping?

My baxi combi 80e has an intermittent fault with the demand hot water running cold and the system is also losi... [Read more]
Mend D.I.Y, Plumbing

Would router interfere with wireless room thermostat?

Our room thermostat ( Honeywell) has ceased to communicate with our boiler.This coincides with having a router... [Read more]
Mend Heating, Home Heating Systems

worcester 28cdi?

C/H works fine but no hot water on demand... any ideas ????
Mend Heating, Home Heating Systems

No heating, but hot water. Boiler tells me there is ' NO demand for heat'?

I have a Vaillant ECOtec plus combination boiler. I rang Vaillant and they asked me to make various checks. T... [Read more]
Mend Heating, Home Heating Systems

potterton performer 24kw HEcombi?

Hello ,is there any quallified heating engineers out there who may know wat this fault is. no hot water,the p... [Read more]
Mend Heating, Home Heating Systems

Worcester 24i RSF Junior - Water Flow Switch Melted!!?

Hi, had a few probs recently wi boiler, new Gas Valve & new PCB within last 2 months seemed to have sorted it.... [Read more]
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