I've a baxi 105e boiler, british gas man fitted new pcb board yesterday, but radiators not as hot as before?
The PC board may not be the correct replacement. Compare it with the original. The model numbers will tell you.
Is the boiler thermostat turned right up? Its unlikely to be the wrong board as I dont think BG are that bad and there cant be that many others that will fit and work and there are no adjustments needed on a replacement board as against some boilers.The other possibility is that the knobs were not refitted on the same alignment as before (if that is possible)on the splines on the shaft behind the knob. If it wont turn up any higher get them back to look at it