Micro Autonomations LLC – Fan Controller v3
14
Document Rev 1.0
Program Temperatures:
This mode allows the turn on temperature and 75% speed temperature points to be programmed.
Alternatively, the turn on or the 75% points may be programmed independently of each other, by
skipping one, and saving the other. The full speed temperature is then automatically calculated from
the turn on and 75% temperature points, whenever they are changed.
The controller will automatically detect whether the EFI or standalone temperature sensor is active.
When piggybacking on an EFI sensor, this is the only mode that should be used.
Note:
Choosing a sensor or selecting a pre-set range is disabled when the controller detects that the EFI input
is active
Use:
1.
Press and hold
Prg
for 2 seconds until the Status LED turns green, then release
Prg
.
The fan will
turn off to allow the engine warm up faster
2.
When the engine reaches the desired turn on temperature, press
Prg
to save the new turn on
temperature
2a. Or, press
Skip
to keep the previously programmed turn on temperature, and continue to
change the 75% temperature
3.
Continue idling the engine until it reaches the desired 75% temperature point, then press
Prg
again to save the new 75% temperature
3a. Or, press
Skip
to keep the previously programmed 75% temperature point, and return to
normal operating mode
Programming will then finish, both the Status and Error LEDs will turn off for one second, then the
controller will return to normal operating mode.
Definitions:
Turn on temperature – This is the temperature where the fan will turn on to 25%. The fan will turn off
when the temperature has dropped approximately 3-5*F below the turn on temperature.
75% temperature point – This is the temperature where the fan will operate at 75% speed. When
manually choosing temperature points, after saving a new high point, the fan should immediately turn
on to 75%.
Example:
The engine is idled from cold and allowed to warm up. The turn on temperature is manually set at 180°,
and the 75% temperature is manually set once the engine reaches 200°. This will put the full speed
temperature at 206°, and the fan will turn off after the engine temperature drops below ~176°.
