Billywizz,
the P2 valve and the switch that brings the "P2" onto the VEMD are 2 different things, side by side. If the valve doesn't close any further you can bet that the valve is closed and probably the microswitch is loose and that is why the "P2" stays.
Best is to observe T4 at a steady state, open and close the Valve, you should have no more than 15°C variation (normally no more than 10°C)
3top
