Rheem ARL-JEZ 16 Seer Series, Installation Instructions Manual, Page: 22 / 40

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CONTROL DESCRIPTION (SEE FIGURE 3)
7-Segment LED
• Displays status and diagnostic codes (See Status and Diagnostic Description)
• Displays diagnostic/fault recall (See Test Mode/Fault Recall)
Red LED (Y1)
• Y1 red LED (solid on) indicates Y1 call from thermostat is present
Line Voltage Connector (ST1)
• Line voltage is connected to control board at Connector ST1
• Maximum wire size accepted is 6 AWG copper wire
• Torque terminals up to 20 in. lbs. max (Check wire terminations annually)
Compressor Wiring Connectors (ST2)
• Compressor wiring assembly is factory installed (Red – Run, Yellow – Start,
Black – Common)
Compressor Control (K2)
• Sealed single pole compressor relay switch with optical feedback feature (arc
detection)
Thermostat Connector (E2)
• R – 24VAC from the indoor unit 24VAC transformer (40 VA minimum)
• C – 24VAC Common from the indoor unit 24VAC transformer
• Y1 – Call for unit operation (cooling)
• L – Communicate/flash diagnostic codes to an indoor thermostat that is enabled
with an ‘L’ terminal, ‘check service light’, or similar function
FIGURE 3
ICC BOARD
FIELD LINE VOLTAGE
CONNECTION (ST1)
COMPRESSOR
WIRING
CONNECTOR (ST2)
O.D. FAN (OFM) RELAY
COMPRESSOR
CONTROL (K2)
ICC (INTEGRATED
COMPRESSOR CONTROL)
7-SEGMENT LED
AMBIENT SENSOR
SW2 BUTTON
THERMOSTAT
CONNECTION
(E2)
TEST BUTTON
RED LED (Y1)
LOW VOLT FUSE
LOW PRESSURE CONTROL INPUT
HIGH PRESSURE CONTROL INPUT
COMPRESSOR
SOLENOID
OUTPUT
{
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CAUTION
UNIT MAY START SUDDENLY AND WITHOUT WARNING
Solid red light indicates a thermostat call for unit operation is present at
the ICC control. ICC control will attempt to start unit after short cycle timer
expires or when in Active Protection mode will attempt to restart unit prior
to Lockout mode.