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Mend > Home Heating Systems

How do I reset my wireless Siemens RDJ10RF thermostat?
How do I reset my wireless Siemens RDJ10RF thermostat?
Fault Codes for Worcester Bosch Greenstar 24i Junior?
Fault Codes for Worcester Bosch Greenstar 24i Junior?
DRAYTON DIGISTAT RF1 WIRELESS THERMOSTAT?
Drayton digistat rf1 wireless thermostat?
Unknown error code (E168) on Potterton Promax 24 HE Plus?
Unknown error code (E168) on Potterton Promax 24 HE Plus?
Ravenheat Boiler not firing up?
Ravenheat Boiler not firing up?
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Mend heating boiler radiator
2

how do i restore correct pressure to boiler?

I have a Linea 28 boiler and have followed instructions to restore pressure with no apparent effect. Could thi... [Read more]
Mend Vaillant Combi Heating
1

vaillant combi 242eh?

all works fine until temp is reached,then boiler refuses to relight until switched off and back on by mains sw... [Read more]
Mend central heating hot water freezing
1

HOW CAN I FIX MY BOILER?

My timer on my central heating boiler (MODENA 102) is not working correctly the heating is coming on in the... [Read more]
Mend boiler heating engineer
1

how do i reset or mend F12 on boiler glow worm 24 hxi?

Boiler shows F12. How can i reset this or is it an engineer problem?
Mend boiler heating vaillant
1

vaillant combi?

dhw is ok ch fires up for few seconds then goes off and continues this cycle on ch. only water in boiler is ge... [Read more]
Mend boiler heating troubleshooting
1

how can i fix my protherm 40-50 ci?

it will not fire fan runs on and off and there is a constant clicking niose any suggestions.
Mend boiler heating hot water
2

worcester combination boiler 9.24 electronic?

hi,when the heating is off, we have no hot water, this does not happen when heating is on ? can you tell me wh... [Read more]
Mend boiler pressure worcester boiler
5

How to increase pressure on Worcester Greenstar 28i junior boiler?

Just had a new combi boiler installed 2 weeks ago and it is running fine, but the pressure bar has dropped to ... [Read more]
Mend heating hot water boiler
7

I have an Alpha HE CB25/33 boiler?

The heating works fine but there is no hot water. It comes out luke warm when it is on heating and water, but ... [Read more]
Mend vokera 24 water
1

vokera compact 24 poor hot water flow?

I have a vokera compact 24 mtn about 4 years old the hot water flow has been getting progressively less and le... [Read more]
Mend wire room thermostat
3

How to wire a room thermostat?

Hi, i have a Ravenheat csi 120 (t) low nox combi boiler but there is no room thermostat so i have bought a Sal... [Read more]
Mend boiler heating faulty
1

Baxi Solo PF does not fire?

When I switch the heating on the boiler fan comes on, the heating cirulation pump comes on but the boiler does... [Read more]
Mend central heating expansion tank radiators
1

centrol heating refilling system?

I am having a problem refilling my stystem after empytying it. The water will not fill the rads from the expan... [Read more]
Mend Heating, Home Heating Systems
9

Vaillant turbomax error F22?

My boiler randomly switches itself off and shows F22 for no reason - ie, it's not empty. There's no reason and... [Read more]
Mend economy 7 control
2

How does my Horstmann Economy 7 Quartz/Maxistore control work?

I have the above control box for my economy seven electricity and my bill seemed very high for Aug to Nov. Loo... [Read more]
Mend boiler pressure ravenheat
2

my pressure valve keeps opening for no reason i run it at 1and half bar?

when the boiler is running it is fine soon as it is turned off over night the boiler empties through the press... [Read more]
Mend boiler leaking heating
1

Ferroli 701 losing pressure and leaking?

Hi, I wonder if there is a simple solution to the following problem: The Ferroli Optima 701 loses pressure ... [Read more]
Mend boiler heating thermostat
17

Baxi Solo 3 PFL - Boiler On light but no fire up?

My Baxi Solo 3 PFL failed to start. The 'Boiler On' light comes on when the timer switches on but the boiler w... [Read more]
Mend boiler thermostat installation
1

potterton performa 24?

hello,my name is octavian and i have a potterton performa 24 heating system. I lost the manual and now i would... [Read more]
Mend heating pcb gas valve
1

baxi solo 2 how can i fix?

perment live & switched live present ,no power to ap,switch,no power to fan,no power to gas valve,fitted pcb ... [Read more]
Mend Heating, Home Heating Systems

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Remove boiler cover?
Mend Heating, Home Heating Systems

How do i stop the time from flashing on the Siemens RDJ100RF?
Mend heating radiators boiler

Worcester boiler dripping water?
Mend Worcester Combi Ignition

Worcester 30 Cadillac combi boiler won’t fire up and the EA?
Mend Heating, Home Heating Systems

How to fix my fireplace?
Mend boiler thermostat replacement

Oil fired boiler thermostat?
Mend boiler heating lockout

Greenstar 24Ri boiler, fast flashing - can I reset?
Mend vaillant ecotec boiler

Vaillant ecotec 831 plus?
Mend Heating, Home Heating Systems

Remove cover off gas boiler?

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