installed a vaillant 637 yesterday, when i did the wiring unfortunately the pcb is burnt, i found a pcb in ebay for good price, but later i realised the part number is 0020052093, this is the old part number, the new part number is 0020132764, this is for sale on other sites, so have i bought the wrong pcb? or it also works for modern vaillant boilers?
many thanks,
many thanks,