Danfuss muss
I have a Cummins 370 with the Sauer Danfuss (sp) hydraulic radiator fan switch. When the dash A/C is turned on, the radiator fan does not start, consequently the condenser overheats and a visible clo...
Forum Discussion
The controller might not see the signal from the switch on the AC compressor. Remove the connector on the switch and see if the pressure fan comes on high. Then try jumping the connector. Most likely a bad switch on the AC unit. If the unit is now low on freon, there might not be enough pressure to activate the switch
