18-HE46D1-3 7
Installer’s Guide
SYSTEM CHECK-OUT – COOLING UNITS ONLY
Verify that the control module is installed and wired per the
instructions contained within this installer’s guide. (J5-Blue
connected to “B”, J5-Yellow connected to “Y”, J5-Orange
connected to “Y”, Liquid sensor installed and connected,
ambient sensor installed and connected).
If uncertain about S2 dip switch 1, 2, 3, 4 settings, leave in
the factory preset position.
Apply power to the unit. Apply “Y” control signal.
Verify the green LED is flashing at 1/2 second ON 1/2 second
OFF rate.
Verify no red LED faults are present.
The fan should run continuously for a minimum of 10 sec-
onds after “Y” is applied. After 10 seconds the control may
begin to cycle the fan if the ambient outdoor temperature is
70 deg. or below. If the fan is cycling and the outdoor tem-
perature is below 70 deg., the control is working. If after
10 seconds of “Y” application the fan is on continuously, the
TEST Switch (S1) may be used to verify the Control Module
has control over the fan. Momentarily depress the TEST
Switch (S1) on the control board. The fan should then cycle
3 seconds on then 3 seconds off for 12 seconds.
NOTE:
If the green LED on the control board is full on with a blink/
flicker OFF every second make certain the orange wire
from the control board is connected to “Y” per these
instructions.
LEDS
The control board contains two LEDs; one green and one red
surface mount. The green LED is a status indicator labeled
LitePort on the control board and flashes at a 1/2 second on
(plus fast blink at the end for LitePort data) and 1/2 second
off rate in the cooling mode. In the heating mode the green
LED is full on with a blink/flicker OFF (LitePort data
transmission) every second.
The red LED is a small surface mount component located
near the end of the large capacitor. The red LED is labeled
ALERT on the control board. The red LED indicator is
normally off. If the red LED is on or flashing then a fault is
indicated according to the following:
Red LED Flashing 1/10 Second ON – 1/10 Second Off –
Liquid Sensor Fault
Red LED Flashing 1/2 Second ON – 1/2 Second Off – Ambient
Sensor Fault
Red LED continuously ON – I
2
C EEPROM Fault board
failure which cannot be field repaired
If the cause of a fault is cleared or repaired then the red LED
fault indication will clear with the removal and reapplication
of 24 VAC power (Y) to the control.
The solid state relay on the control module also contains a
green LED indicator. This LED indicates when the solid
state relay is energized by the control. If the control is cycling
the fan then this LED will be on/off accordingly.
8
CONTROL BOARD
12 34
ON
OFF
S2
TEST
S1
J3
AMBIENT
J2
LIQUID
BYO
J5
ALERT
Lite
Port
RED
LED
GREEN
LED
S2-1,2,3,4
DIP SWITCHES
S1
TEST
SWITCH
AMBIENT
SENSOR
LIQUID
SENSOR
B,Y,O
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