Manual

cc_fortI c
Alert i
LOW Voltage
Terminals
L
,L
:1
DFT IDFT DF2
I¥ v
,c
Fa IT2 I _Ap
_CD_ _L=J |
\/ I .L
LPS HPS Defrost Control Board
Figure 3.24VAC Comfort Alert TM
Wiring Diagram
The module cannot be powered by the C terminal
on a defrost board or other control board without
experiencing nuisance alerts.
NOTE: After the thermostat demand signal is
connected, verify that 24 VAC across Y and
C when demand is present.
NOTE: Factory installed modules may have
different thermostat demand signal wiring.
Follow manufacturer's wiring instructions
when replacing module.
TROUBLESHOOTING
interpreting The Diagnostic LEDs - When
an abnormal system condition occurs, the
Comfort Alert TM module displays the appropriate
ALERT and/orTRIP LED will flash a number of
times consecutively, pause and then repeat the
process.To identify a Flash Code number, count
the number of consecutive flashes.
Every time the module powers up, the last ALERT
Flash Code that occurred prior to shut down is
displayed for one minute.
Cooling -- Gradually lower the thermostat
temperature setpoint below the actual room
temperature and observe that the outdoor unit
and indoor blower energize. Feel the air being
circulated by the indoor blower and verify that
it is cooler than ambient temperature. Listen
for any unusual noises. If present, locate and
determine the source of the noise and correct
as necessary.
Short Cycle Protection -- With the system
operating in COOLING mode, note the setpoint
temperature setting of the thermostat, and
gradually raise the setpoint temperature until
the outdoor unit and indoor blower de-energize.
Immediately lower the setpoint temperature of
the thermostat to its original setting and verify
that the indoor blower is energized and that the
outdoor unit remains de-energized. Verify that,
after approximately 5 minutes, the outdoor unit
energizes and that the temperature of the air
supplied to the facility is cooler than ambient
temperature.
Heating -- Lower the thermostat setpoint
temperature to the lowest obtainable setting and
set the thermostat function switch to HEATING.
The indoor blower and outdoor unit should stop
running.After a minimum of five minutes, increase
the setpoint temperature of the thermostat to the
maximum setting.Verify that the outdoor unit and
indoor blower have energized. Feel the air being
circulated by the indoor blower and verify that
it is warmer than ambient temperature. Listen
for any unusual noises. If present, locate and
determine the source of the noise and correct
as necessary.
NOTE: Other sources for heating (i.e.: electric
furnace, fossil fuel furnace, air handler with
electric heat options, etc.) that interface with
the unit should be functionally checked to verify
system operation and compatibility. Refer to the
installation instructions for this equipment and
perform a functional checkout in accordance
with the manufacturer's instructions.
OUTDOOR THERMOSTAT (if supplied)
The outdoor thermostat prevents the electrical
auxiliary heat (if used) from operating above a
desired set point. Selection of the set point is
determined from the building design heat load.
The thermostat is adjustable from 45°F to 0°R
The factory temperature setting is at 40°R
Defrost CycleTimer --The defrost cycle timer
controls the time interval of the hot gas defrost
after the defrost sensor closes. It is located
in the lower left corner of the defrost control
board. Three interval settings are available: 30
minutes, 60 minutes, and 90 minutes.Time setting
selection is dependent on the climate where the
unit is being installed.
Example 1. Dry climate of Southern
Arizona. A 90 minute setting is
recommended.
Example 2. Moist climate of Seattle,
Washington. A 30 minute setting is
recommended.