Biazi riva plus he NIGHTMARE!!!!!!

[Simon Cainyplumb]

Hi All
I'm new to this forum thing and I don't really knew w what I'm doing , so go easy please

Right info

Biazi riva plus he plus 28 kw
Heating but no hot water . Initially I thought flow switch .no fault showing on boiler just green light flashing waiting for a command .

Changes magnetic flow switch , no joy . Actuater on diverter valve working(motor runs pin moves . Diverter valve pin operates when pushed manually so not ceased . Checked dhw thermistor gets 15 ohms . Rings biazi .should he getting around 12 ohms on sensor so no issue there . Run a magnet over sensor I was advised by biazi. Does this still nowt. So then he says pcb . Ok I says , changes pcb . Sets up the board with the instructions . Now nothing works not even heating and I'm getting an air pressure switch fault code . I haven't gone any where near aps . Rings biazi again . He runs me through board setup , still same.
Still no hot water . Now he says oh may be the turbine in the flow switch has jammed , there's a filter in there that could be blocked . Why would he advise a pcb first ??

I'm st a loss now . How can I have heating , swap a board and now have an aps fault . Checked all connections etc biazi guy says could be condensate unit ?? Or aps . I know coincidences happen but I refuse to believe that after swapping the board the aps has decided to go or the condensate unit has suddenly blocked in the space of an hour .

Only been an engineer for a few two year and I don't do many breakdowns so any knowledge from you wiser guys would be greatly appreciated, before I end up ragging the boiler off the wall and throwing it in a skip

Cheers guys

 

[Chalked]

Hi
I take it your gas safe ?
If so, message a moderator on here with your details and we have a separate sub forum , so we don't encourage diy.

 

[king of pipes]

Pm your gas safe details to Dan or lou when they have been verified, this post can be moved to the GSRI forum where i am sure one of us will be able to help you , sorry but we cannot advise repairs
to any gas appliances on a public open forum for safety reasons. Cheers kop

 

[king of pipes]

Think you have been given some bad advice very much doubt it is the pcb board the heatings working , download the manual sit down have a cup of tea and read how the process of ignition works and how the boiler operates you may suprise yourself ? Kop

 

[Simon Cainyplumb]

Hi
I take it your gas safe ?
If so, message a moderator on here with your details and we have a separate sub forum , so we don't encourage diy.

Hi ye no probs . Will do pal . Sorry don't really know what I'm doing on forums etc . New to all this . I did put my gas safe reg no on my info when I signed up . Just thought it would go straight through

 

[Simon Cainyplumb]

Think you have been given some bad advice very much doubt it is the pcb board the heatings working , download the manual sit down have a cup of tea and read how the process of ignition works and how the boiler operates you may suprise yourself ? Kop

View attachment 31388

Ye I didn't think it was pcb in first place. I'm always reluctant to swap em, unless obvious signs of scorching or corrosion .
Another engineer had been out to it and said pcb, I told Cust I didn't think it was , rang biazi and he said it was . I don't know why I got myself involved in this job tbh . Keep my gob shut in future

 

[ShaunCorbs]

@Lou

 

[masons]

very much doubt it is the pcb board the heatings working

what do you mean ?

 

[masons]

remember on this boiler if you reset it five times or more you will need to turn the spur switch off and on to reset it