High Country Tek HFS-2Q - Manual (Page 15)

Hydraulic Fan System Controller : HFS - 2
Diagnostic Indicators :
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 2000 unit
Power ON / Opto 2000 transmitter:
than 40 volts. This LED also acts as the communications transmitter when connected to the Opto 2000 unit.
The clear LED is used only for ‘Infra-Red’ communications when connected to the Opto 2000 unit and never shows
any visible light.
Opto 2000 Receiver:
Proportional Valve Output:
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 RED LED for the reversing coil trigger input comes ON only when the input is connected to the +Supply voltage
indicating that the manual reverse sequence has been initiated. Once this sequence has been started, and in the
duration of the purge cycle, new or multiple manual trigger inputs will be ignored as will any automatic purge
Manual Reverse Trigger:
The RED LED for the reversing coil output comes on with the output.
The LED blinks on for about 0.1 seconds and then off for about 0.1 seconds to indicate shorts and blinks on for about
0.5 seconds and then off for about 0.5 seconds to indicate opens. In either cases, the alarm output comes on
‘Steady’ to indicate an error.
p g y , p gg p g y p g
sequence signals.
Reverse Valve Output:
y
Manual trigger Reverse
Valve sequence
Activated.
Proportional Valve
output ‘ON’. Power ON / Opto 2000
transmitter Opto 2000 receiver
Thermistor
input status
Reverse Valve
( Purge ) Output ‘ON’.
See page 16 for
details
15
Two part,
polarised heavy
duty connectors