Hi guys, have an odd one here, have two york chillers on site, mod:ycva-55L-50B. Both chillers will shut down completly, have power to everything!! all pressures fine, but if i replace the inlet water sensor they imediatly start up again, being so old there is no fault code system, and it is imposs to get hold of york tech division, has anyone come across this prob or have any solutions??

Many Thanks...