Operation - ECR EMI America Series Installation, Operation And Maintenance Manual

CACH/CAHH Microprocessor Controller Operation
Cooling mode
For cooling operation, first turn the unit on
via the POWER/SEND button.
1. Select Cooling mode via the MODE
button.
2. The room temperature and set point
temperature will be displayed.
3. The setpoint temperature will change by
one degree with each successive press
of the UP or DOWN ARROW buttons.
Holding the button in will change the
temperature rapidly.
4. Place the setpoint temperature below the
room temperature.
5. The compressor will start and cooling will
continue for a minimum of two minutes
and as long as the setpoint remains below
room temperature.
6. The Cooling LED will illuminate as long
as the unit is calling for cooling.
7. Once the room temperature is satisfied for
at least sixty seconds and the two-minute
minimum run time has elapsed the com-
pressor will cycle off.
8. The fan will operate as described in "Fan

Operation. "

NOTICE
Once the cooling has cycled off or fol-
lowing a power outage, the compressor
will not restart for at least three minutes
(anti-short-cycle timer).
Comfort where it counts
CACG/CAHG & CACH/CAHH
• Installation, Operation and Maintenance Manual •
Heating mode
Optional Electric heat operation (Air
Conditioning unit outdoors)
For operation with electric heat the control
must first be configured properly (Heat source
– ON, Heat pump – OFF). See Figure 36,
Page 35.
For electric heat operation, first turn the unit
on via the POWER/SEND button.
1. Then select Heating mode via the MODE
button.
2. The room temperature and setpoint tem-
perature will be displayed.
3. Press either the UP or DOWN ARROW
buttons to change the setpoint tempera-
ture.
4. The setpoint temperature will change by
one degree with each successive press
of the UP or DOWN ARROW buttons.
Holding the button down will change the
temperature rapidly.
5. Place the setpoint temperature above
room temperature.
6. The electric heat will energize and heat-
ing will continue as long as the setpoint
remains above room temperature.
7. The Heating LED will illuminate as long
as the unit is calling Heating mode.
8. When the room temperature has been
satisfied for at least sixty seconds and
the two-minute minimum on-time has
expired, the electric heat will switch off.
9. The fan will operate as described in "Fan
Operation. "
40
Air Handlers
(continued)
P/N 240007756, Rev. A [051509]