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We have 79 questions about mending 'boiler not firing system boiler'

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Mend Heating, Home Heating Systems

How can i fix my Potterton Performa 30 HE Boiler?

Boiler failing to fire up; showing fan & flame fault indication. Dismantled boiler and checked fan on 240v sup... [Read more]
Mend Heating, Home Heating Systems

Something wrong with my boiler?

I have a Vaillant Ecotec 831 and when the heating is not firing the boiler loses pressure and then when fired ... [Read more]
Mend Heating, Home Heating Systems

heating not working. glowworm 18hxi?

two of my radiators have not been heating up, yeaterday i switched the rest of my radiators off bar one to see... [Read more]
Mend Heating, Home Heating Systems

Digital clock battery DOMI compact F24 B?

If the battery runs flat on the digital clock connected to a Ferroli DOMI compact F 24 B would this prevent th... [Read more]
Mend Heating, Home Heating Systems

red light on vokera compact boiler?

my boiler keeps firing up and the green light flashes but then turns red. The system then re-fires and it turn... [Read more]
Mend Heating, Home Heating Systems

Ravenheat Little Star LS100 problem?

I have had a few problems with this boiler for the last year in that the DHW is only hot when it feels like it... [Read more]
Mend Heating, Home Heating Systems

which nut to bleed a Reillo 40 boiler?

I recently ran out of oil but have today filled the tank. The sytem is now only firing for a few seconds and c... [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

f64 showing and boiler not firing up?

my boiler was showing f64 on digital display and noticed pressure dropped right off scale , turned off system ... [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

Problem with hot water demand?

I have a vaillant 824 E, problem with hot water demand - boiler kicks in on start up but temperature on boiler... [Read more]
Mend Heating, Home Heating Systems

warmflow boiler brand new?

why does burner stop firing? flue system seems to be at fault DRAUGHT FROM FLUE BLOWS OUT FLAME
Mend Heating, Home Heating Systems

potterton flowsure plus?

hot water and central heating work however my problem is this: couple of weeks ago boiler seemed to 'cycle' a... [Read more]
Mend Heating, Home Heating Systems

Boiler still flashing red and green after repressurising system to 1.5 bar?

Hello.... I have an Alpha SY24 boiler...this evening i put the hot water on. Boiler fired up ok. However at s... [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

why does my Worcester 28CDi not give hot water?

The boiler will sometimes fire up when I open a hot tap, but usually it won't give hot water unless its firing... [Read more]
Mend Heating, Home Heating Systems

RAVENHEAT ls100t - warm water only, heating ok?

Hello, I'm hoping someone may be able to help. My combi boiler was fitted around 6 years ago, and after two ... [Read more]
Mend Heating, Home Heating Systems

boiler not firing?

Boiler is not firing up. I have switched off electrical supply, reset the thermal cut out button (this didn't ... [Read more]
Mend Heating, Home Heating Systems

thermecom boiler?

we ran out of oil, had delivery yesterday, took about 1 hour to start system again, since firing up we have th... [Read more]
Mend Heating, Home Heating Systems

worcester 24i rsf combi ?

help trying to fit new rad to my system . gave up reconnected old rad ,boiler not firing up ,so press the rese... [Read more]
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