i actually went and checked out how mine works.
it comes on all the time at a low speed until it detects a temp that the ddec says to turn on the fan to high speed.
i tested it by turning the engine on, and disconnecting the solenoid that controls the hydraulic speed control for the fan. when i unplug the solenoid, the fan goes to hurricane speed.
so mine appears to be set up like barry's and not like richards...
tom
|