Recent: Windows 11, Dell 5450, JBL Bluetooth headphones?

Mend > Home Heating Systems

Mend Ravensheat RFF 820/20 Combi Boiler Heating System Issue

Ravensheat RFF 820/20.DOMESTIC HOT WATER ONLY WORKS WHEN HEATING IS ON?

My combi boiler only supplies hot water to the taps when the Radiator system is switched on.
Anyone any ideas what could be wrong.
Cheers
Alan

albar
November 2006
RavensheatRavensheat RFF 820/20Heating, Home Heating SystemsCombi Boiler Heating System Boiler Issue
Is the diaphragm the one in the three way valve

albar
November 2006
Thanks very much Mike.
Albar

albar
November 2006
you need a new diaphragm.

BG MIKE
November 2006

Related Questions ...

Mend combi pressure heating
4

Pressure in my Ariston Combi Boiler drops when switched off?

I recently purchased a new flat, which has an Ariston Combi boiler (installed last year along with new heating... [Read more]
Mend central heating combi boiler heating system
3

Vaillant Combi Boiler - No Central Heating?

Hi, It appears that my boiler is not working correctly. I get hot water through the taps and shower no proble... [Read more]
Mend combi boiler central heating heating system
1

Ravenheat - only get hot water when heating is on?

A friend has a Ravenheat combi boiler. When he turns on the hot water the boiler fires up but he gets no hot ... [Read more]
Mend boiler combi pressure
2

Ferroli Optima 901 -occasional Hot water problem?

Hi I have a Ferroli Optima 901 combi boiler and have recently been experiencing occasional problems with no ho... [Read more]
Mend combi boiler hot water pressure relief valve
1

Ferroli Optima 901 -Intermittent Hot water problem?

Hi I have a Ferroli Optima 901 combi boiler and have recently been experiencing intermittent problems with no ... [Read more]
Mend combi boiler ferroli optima heating system
2

Ferroli Optima 901 -Intermittent Hot water problem?

Hi I have a Ferroli Optima 901 combi boiler and have recently been experiencing intermittent problems with no ... [Read more]
Mend boiler heating systems

Remove boiler cover?
Mend Heating, Home Heating Systems

How to fix my fireplace?
Mend Worcester Combi Ignition

Worcester 30 Cadillac combi boiler won’t fire up and the EA?
Mend vaillant ecotec boiler

Vaillant ecotec 831 plus?
Mend thermostat heating siemens

Siemens RDJ10RF thermostat problem?
Mend Heating, Home Heating Systems

Remove cover off gas boiler?
Mend boiler thermostat replacement

Oil fired boiler thermostat?
Mend heating radiators boiler

Worcester boiler dripping water?
Mend boiler heating lockout

Greenstar 24Ri boiler, fast flashing - can I reset?
Mend heating boiler Worcester Bosch

Boiler cycle?
Mend radiator thermostat heating

One radiator in a bedroom is always cold?
Mend Heating, Home Heating Systems

How do i stop the time from flashing on the Siemens RDJ100RF?

How to mend ...

Find out how to mend just about anything howtomendit.com for free repair help, information and advice.
Mend Home Heating Systems ...

Related Categories

Mend Convector Heaters
Convector Heaters
Mend Fan Heaters
Fan Heaters
Mend Oil Filled Radiators
Oil Filled Radiators

Topic

Combi Boiler: Hot Water Only With Heating On