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Hi mate as you suggested it was the external controls. Thanks very much for your advice and help. Hi

Thanks for that matey will try that and get back to you. Thanks

Hi mate Appreciate your reply,ah right i understand what you mean regarding Dv microswitch and as you stated it would have to go somewere i.e heating thats cleared that (thank you). It does have a timer and a thermostat, thermostat is on full with red and green light, timer clock ticks...

hi i have a ravenheat csi 85 AT boiler i get hot water but no central heating,on the diverter valve there is a switch i replaced it still did not work untill i pressed the button on it then heating came on untill i took my finger off button then it stopped again. According to the manual its...

Hi mate Thanks for the reply, but this problem was never a problem before, if that is the problem what may well have caused it? No recent works have been carried out Thanks

Thanks for the reply mate, Nothing has been touched no neighbours with any problems either, it seems to me as if when the cold water is turned on it seems to over power the hot water and knock it off if that makes sense to you. :?

Hi Guys/Gals The boiler is approx 4 to 5 years old Bit of a strange one for you heating works fine, hot water however works fine too but as soon as you mix the hot water with the cold water the boiler turns off but then as soon as you turn the cold water off the boiler fires up for hot...

Hi Guys Thanks for the replys, so i need a PCB board you think?, it does go through its strarting cycle but then the board starts clicking. any other thoughts from anyone? Thanks

Hi Peeps Need some advice i have the above boiler and it has suddenly decided to stop working,Looked at the manual no fault code is showing. It attempts to fire fire up then stops and so on and then the circuit board starts clicking again and again and just keeps doing that till you turn...

Thnks for that mate much appreciated, Kevplumb did mention that but he did'nt explain it how you did (But no disrespect to Kevplumb) thnakyou kevplumb too. Will let you guys know how i get on. P.s did have a call out charge of £50. Thnks

Thermistor = temp sensor thanks for that.. The one thing he didn't mention was the DHW heat ex which i will mention to him, Dont knw temp diff sorry not that clued up on them, I was working at the time he jus rang to say he checked them parts but can't seem to find the fault. Thnks

you say it could be scaled DHW heat Ex but when the boiler fires up on how water it heats up to full temp and then goes off (i kp coming back to this but is that problem not ascociated with a temp sensor?) Thermistor and burner pressure's and aps were checked and apparently were fine. and he...

it just constantly keeps coming on off on off.. Will check the aps on the combustion side. thnks Looking at a previous fault which someone had (same as mine) they changed the DHW temp sensor and it did the job, Could that not be the same case for me? many Thanks

What i mean my friend is hot water is fine when the boiler fires up the issue is the boiler switchin on and off constantly weather that be heating or hot water. Not a plumber so excuse me if i'm not able to write all info thnks

hot water is fine.. the only problem is its knocks the boiler on and off evry 10 sec's or so.. Could it possibly be the DHW temp sensor?? Thnks

boiler shuts off and then fire's up again keeps doing that all the time..

Hi Need some help please as no plumber's can seem to work out what's wrong.. the boiler over the few days has developed a tendancy to switch on and off as it please's.. Also i noticed that when hot water reaches the tap it knocks off? please help as its costing alot of money to call...

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