The Idrofit pump units are equipped with a pressure gauge on top of the valve. If thats what it is! You may want to try to read the static pressure one more time. Turn the power off, close the shutoff line valve. Read the pressure. Wait 10 or 15 minutes and compare the pressure readings. If the pressure dropps it's in the valve. If not check the floor level, leave it off overnight. Then check to see if the elevator car creeped down over night.
This way you will have ruled out the system holding pressure...
