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We have 93 questions about mending 'fine boiler not firing'

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Mend Heating, Home Heating Systems

Pottreton Perf 24 - Central heating goes on even if I swictch to hot water ?

When I turn the switch right for hot water only, I get the boiler firing up and providing central heating and ... [Read more]
Mend Heating, Home Heating Systems

vokera compact boiler?

My boiler broke down during the cold spot before xmas., A new return valve was put on, followed by a vermister... [Read more]
Mend Heating, Home Heating Systems

i have a worcester 28i junior, wont turn off constantly using gas?

hi , my boiler has been working fine, coming on when i turn hot tap on or shower on, and firing up when i tur... [Read more]
Mend Heating, Home Heating Systems

Drayton Digistat SCR not firing boiler?

Help, My drayton digistat scr is not firing up the Worcester/bosch 24i junior boiler. The scr is communicati... [Read more]
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intermittent problem with central heating valve not opening?

We have a Drayton wireless for our central heating, and a Drayton ZA5679-2 2 Port motorised valve also for hea... [Read more]
Mend Heating, Home Heating Systems

Problem with firing up potterton puma 80 boiler?

Hi, I wonder if anyone can help me fix this: THe pilot light is on and strong, the pressure is fine, but the b... [Read more]
Mend Heating, Home Heating Systems

Problems with firing up potterton puma 80?

Hi, I wonder if anyone can help me fix this: THe pilot light is on and strong, the pressure is fine, but the b... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Potterton Netaheat 10-16?

Any ideas what's wrong with my boiler? It was working fine this morning but this evening there is nothing. The... [Read more]
Mend Heating, Home Heating Systems

Hot water but no heating?

The hot water is working fine but the boiler is not firing for the central heating, any ideas? We have a ac... [Read more]
Mend Heating, Home Heating Systems

lost manual F22 and F25 codes?

Hi, can anyone help? New boiler working fine on the hot water side ..now have tried to put on CH..fine for x2... [Read more]
Mend Heating, Home Heating Systems

Boiler not firing up?

Hi, I have a 28i with a drayton wireless thermostat system. The thermostat is working fine as I have checked ... [Read more]
Mend Heating, Home Heating Systems

Ferroli Optimax not heating water?

I had the hot tap on today and the water suddenly went cold. Now when you turn the hot tap on the boiler is no... [Read more]
Mend Heating, Home Heating Systems

boiler not firing up?

my boiler has is a worcester bosch greenstar 40cdi and has been working fine . tonight turn it on and get the... [Read more]
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potterton suprima 40L hot water but no heating downstairs?

I have a Potterton Suprima 40L about 6 yr old. Had no problems with it over the past years. I have no central... [Read more]
Mend Heating, Home Heating Systems

drayton digistat RF2 not heating?

I have a drayton digistat RF2 which has been working fine until today, I have the flame symbol visable but no ... [Read more]
Mend Heating, Home Heating Systems

Why is my Vaillant ecoMAX828 so noisy?

The boiler works fine when firing up for central heating, and also for medium demand hot water. However, when ... [Read more]
Mend Heating, Home Heating Systems

Baxi Boiler Only Firing up sometimes?

Hi all, Wonder if someone can help me ASAP. I have a old Baxi Boiler FS 601 which has a tank in the bedroo... [Read more]
Mend Heating, Home Heating Systems

is there a problem with betacom 24?

have had betacom 24 fitted it seems to work fine but when heating onseems to be very noisy even when boiler st... [Read more]
Mend Heating, Home Heating Systems

Towerstat Receiver and Transmitter both look fine but boiler not firing up?

Hi I have a Towerstat RF fitted on a Heatline Boiler. Boiler appears fine, firing up for hot water etc wh... [Read more]
Mend Heating, Home Heating Systems

Worcester Heatslave 15/19 not working?

Hi, I have a worcester heatslave 15/19 combi boiler which worked fine until this morning when it suddenly sto... [Read more]
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