Vokera Excel 80SP Problems

[GQuigley67]

this happens on and off, sometimes it works fine and others it doesnt.

what it is thats happening is that the heating is working fine, but sometimes the hot water isn't. I noticed that with the tap running, the burners weren't firing up. I think it may be the domestic diaphragm that may need replaced. Anyone got any 2nd opinions or came across this problem ?

 

[Billy Bob Bob]

could well be diaphragm or sticking aps

 

[GQuigley67]

what you mean sticking aps ? i'm new to servicing and repairing.

 

[Billy Bob Bob]

air pressure switch try taking the combustion door off see if that helps also check the veturies are clean

 

[Billy Bob Bob]

Manuals & Literature | Vokera look here for mi,s probably is the diapragm

 

[GQuigley67]

ok thanks gasman, I was thinking of doing a course for advanced fault finding in combi boilers, I believe you get an E1, E3 & E5 qualification at the end of it and its for £600. Do you thnk this would help improve my skills on repairing and servicing ?

 

[Billy Bob Bob]

no it would just tell you the basics and its dear at £600 experience is the best teacher,best advice i can give you get a multimeter learn how to use it your best tool,read posts on here you will learn loads

 

[GQuigley67]

oh ok, so i'm guessing a multimeter to check electrical components, clean and brush the boiler, flue .. check the flue gases. Is this a typical service ? and replace any components which are faulty ? is it one of those things were the thought of it is scarier than actualy doing it ? if you know what i mean

 

[Billy Bob Bob]

strait forward when you get into it

 

[wnjswozo]

have fun ,and always start with basics on fault finding,ask customer everything,always check polarity,is there gas ,is there power
as gas man says experaince,is the only way.have fun

 

[GQuigley67]

I have noticed that the flue terminal outside has a hole in the inner flue, is this enough to condemn the boiler ?

 

[Billy Bob Bob]

yes this will cause the boiler to vitiate

 

[GQuigley67]

yeah ? now that u mention it the flame is looking rather orange. well i changed the domestic diaphragm today as this morning i wasn't getting any hot water at all. Its working fine now regarding the hot water, and the old diaphragm was half melted and had a small hole in it.

Well i suppose i better replace the flue aswell then I don't know how long that hole has been there as i haven't inspected the flue before

 

[Reg Man]

Do you check the flow switch first?

 

[GQuigley67]

Gas man my pilot light has been going out aswell, do you think this is due to the hole in the flue ?

 

[Reg Man]

Hole in the flue is a worry. Do a combustion analysis. If its bad result, I think that will tell you how serious it is. In any event it requires rectification.

 

[Billy Bob Bob]

Gas man my pilot light has been going out aswell, do you think this is due to the hole in the flue ?

doubt it, what boiler? holes in flues are rare,unless you own a potterton prima

 

[GQuigley67]

the vokera excel 80sp, thats my boiler. well i'm going to need to replace the flue as its damaged, I don't have a flue analyser at the moment but I'm pretty sure that the carbon monoxide readings would be higher than usual as i suspect the boiler isn't getting enough oxygen to burn efficiently. the pilot light doesn't go out all the time, just the odd time. Is this due to a gust of wind or is it a fault ?

 

[Reg Man]

If the flues damaged change it. It could be snuffing the pilot if there is recirculation of products of combustion. Two other things; If the flue terminal is located in a pressure zone, also, dirt or incorrect adjustment on the pilot assembly.