Baxi 2pf pump continually running

[hulsong]

This boiler is heating koi pond (daft I know) the boiler works fine on a
loop from permanant live to switch live. although reading a previous
post it seems that the pcb is shot with the pump continually running.
the other promblem is with the digital stat there is only putting out 148v
so not enough to run the fan????? P.S. A Corgi plumber is over seeing
the work but is not familiar with this type of system I.E ponds.

 

[corgiman]

just how is he "overseeing" something he has no idea about

 

[hulsong]

just how is he "overseeing" something he has no idea about

he is overseeing the boiler side, but its the electrics from the stat which he isn,t familar with. the boiler is not running from the stat at the moment it just powered from a 13a socket and the on-off switch. we are trying to determine
why there is only 148v from the switch live on the stat ( not coupled to
boiler)operate? surely the fan needs 240 to