High Country Tek HFS - Manual (Page 11)

Hydraulic Fan System Controller: HFS
The unit is fitted with LED indicators to show real time diagnostic information and indicate by error codes in a visual
manner the current operational status and if a fault develops with the system, where the fault may be originating from.
The red LED indicates power supply status with the LED „OFF‟ for less than 8 volts and flashes „ON/OFF‟ for more than
40 volts. This LED also acts as the communications transmitter when connected to the Opto 3000 unit.
The proportional coil PWM% LED is fully RED for 0% PWM and fully GREEN for 100% PWM, with shades of red, orange,
yellow and green indicating intermediate values.
The GREEN LED for the thermistor that is controlling the fan comes on steadily while the other thermistor LEDs are off,
if no more than one thermistor is above set point. If multiple thermistors are above set point, the thermistor that is
controlling the PI process has a blinking LED and the others above set point are on steady.
The clear LED is used only for „Infra-Red‟ communications when connected to the Opto 3000 unit and never shows any
visible light.
Thermistor
input status
LED’s
Error Code LED -
See page 12 for
details
Proportional Valve
output ‘ON’ LED
Power ON / Opto 3000
transmit LED Opto 3000 receive LED
Two part, polarised heavy
duty connectors.
( Female connector must be
ordered separately )
Fan speed
Over-ride
switch status
Diagnostic Indicators:
Power ON / Opto 3000 Transmit LED:
Opto 3000 Receive LED:
Proportional Valve Output LED:
Thermistor Input Status LED’s:
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