6720220330 Revised 05-12
5
malfunction light powered off of the hot (R) side of the
transformer, then the thermostat malfunction light
connection should be connected directly to the (ALR)
contact on the unit’s UPM board.
To the left of the thermostat connection block are a row of
2 red and 4 green LED’s. These LED’s indicate the operating
status of the unit. They are labeled as follows:
EM (red) Emergency Heat On
W1 (red) Auxiliary Heat On
O (green) Reversing Valve Energized, unit is
in cooling mode
Y2 (green) Second Stage Compressor On
Y1 (green) First Stage Compressor On
G (green) Fan On
Just above the connector block is a single red LED labeled
CFM that will blink intermittently when the unit is running
and may flicker when the unit is off. This LED indicates the
air delivery of the blower at any given time. Each blink of
the LED represents approximately 100 CFM of air delivery
so if the LED blinks 12 times, pauses, blinks 12 times, etc.
the blower is delivering 1200 CFM. Refer to Figure #7 for
factory programmed air delivery settings for the ES Series.
To the right of the thermostat connection block is a green
LED labeled dehumidify. This feature is not utilized on the
ES Series.
Just above and to the right of the thermostat connection
block are four sets of jumper pins labeled ADJ, DELAY, HEAT
and COOL. The ADJ set of pins are labeled NORM, (+), (-)
and TEST. ES units will all be set on the NORM position from
the factory, however, airflow can be increased (+) or
decreased (-) by 15% from the pre-programmed setting by
relocating the jumper in this section. The TEST position is
used to verify proper motor operation. If a motor problem
i
s suspected, move the ADJ jumper to the TEST position and
energize G on the thermostat connection block. If the
motor ramps up to 100% power, then the motor itself is
functioning normally. Always remember to replace the
jumper to NORM, (+) or (-) after testing and reset the unit
thermostat to restore normal operation.
NOTE: Do not set the ADJ jumper to the (-) setting when
electric heaters are installed. Doing so may cause the
heaters to cycle on their thermal overload switches,
potentially shortening the life of the switches.
The other three sets of jumper pins are used to select the
proper program in the ECM motor for the unit. Refer to
Figure #7 for the proper jumper placement.
NOTE: Always disconnect power before changing jumper
positions on the interface board and reset the unit
afterward.
To the left of the red and green status LED’s is a row of 1/4”
male quick connects. These are used to pass thermostat
inputs on to the rest of the control circuit. Remember to
always turn off unit power at the circuit breaker before
attaching or disconnecting any wiring from these
connections to avoid accidental short circuits that can
damage unit control components.
SAFETY DEVICES AND THE UPM CONTROLLER
Each unit is factory provided with a Unit Protection Module
(UPM) that controls the compressor operation and
monitors the safety controls that protect the unit.
Safety controls include the following:
• High pressure switch located in the refrigerant
discharge line and wired across the HPC terminals on
the UPM
• Low pressure switch located in the unit refrigerant
suction line and wired across terminals LPC1 and LPC2
on the UPM.
• Freeze Sensor—the freeze sensor input is active all the
time, if a freeze option is not selected the freeze
terminals will need a jumper. There are 2 configurable
freeze points, 30°F and 15°F. The unit will enter a soft
lock out until the temperature climbs above the set
point and the anti-short cycle time delay has expired.
The freeze sensor will shut the compressor output down
after 90 seconds of water flow loss and report a freeze
condition. It is recommended to have a flow switch to
prevent the unit from running if water flow is lost.
NOTE: If freeze protection sensor is not installed, a jumper
between freeze contacts must be installed on the UPM
board otherwise unit will not start.
(Figure #7)
MOTOR PROFILE AIR FLOW TABLE CFM
SINGLE STAGE UNITS
FAN Y1 AUX. EMERG. PLUS MINUS TAP
MODEL ONLY
COOL/HEAT
HEAT HEAT ADJ ADJ
COOL/HEAT/DELAY
ES018 450 600 600 600 690 510 C
ES024 550 800 800 800 920 680 B
ES030 650 1000 1000 1000 1150 850 A
ES036 850 1200 1200 1200 1380 1020 B
ES042 1000 1400 1400 1400 1610 1190 D
ES048 1100 1600 1600 1600 1840 1360 D
ES060 1300 2000 2000 2000 2300 1700 B
ES070 1500 2200 2200 2200 N/A 1870 A
MOTOR PROFILE AIR FLOW TABLE CFM
TWO STAGE UNITS
FAN Y1 Y2 AUX. EMERG. PLUS MINUS TAP
MODEL ONLY
COOL/HEAT COOL/HEAT
HEAT HEAT ADJ ADJ
COOL/HEAT/DELAY
ES025 450 500 800 800 800 900 700 A
ES035 700 800 1200 1200 1200 1400 1000 A
ES049 900 1000 1600 1600 1600 1800 1400 B
ES061 1200 1400 2000 2000 2000 2100 1900 A
ES071 1600 1600 2200 2200 2200 2300 1900 A
ES SERIES
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