greenstar 35cdi problems

[gassman]

Boiler had an F0 fault code which turned out to be the pcb.
However after changing the pcb which came with the wiring loom it will now not do anything.
Display is d3 and the blue led is flashing.
Any ideas?
Found on line info was Terminals 8-9 not detected at connector ST7. This pcb has no ST7 connection to my knowledge. Other info was link missing?
The roomstat link is still in place.
Please advise as I have a very upset customer. Bosch tec shut till Monday but I need to sort this asap.
Thanks

 

[SavageW]

Got a mate to send me this,hope it helps

 

[gassman]

Thank you very much for your help, very much appreciated.
I will check this out in the morning.

 

[SavageW]

No worries

 

[hammers4spanner]

I have had this twice on these and I can confirm you have a port on the pcb that needs addressing.

I did however have an issue still with both of them after. One the fan blew when turned power back on.
Other was that it would stuck on low fire .
Had the local engineer out on one and he just scratched his head endlessly.

Now I pre warn cust if pcb on these have gone pop.