"Creaking and noisy' Levelers

Sorry, did not see the problem with the jacks down and he retracted and it fixed it. LCI jacks use a Pressure switch on the Manifold that sends the signal when jacks are retracted. LCI jacks do NOT have sensors for the jacks down or retracted in the usual sense. They use a pressure switch on the manifold that since LCI jacks are power up and down, when retracted there is a static pressure. When the jacks all fully retract, the pump then pumps the pressure and shuts off. THAT pressure is what the manifold pressure switch reacts too. IF you have a small internal leak in the system, the pressure drops a little and the Jack down error is called for. You then do a ALL retract and the pump pressurizes the system again to satisfy the switch. MOST times the pressure switch is defective and you replace it. Doug

This is the pressure switch.

http://www.lci1.com/assets/content/support/sheets/TI___044_Pressure_Switch_Identification.pdf