Manual 2100-670
Page
18 of 32
FIGURE 21
Adjusting Freezestat Alarm Delay
6. Press UP or DOWN keys to change to the desired
value.
7. Press ENTER key to save the value.
Indoor Airflow Operation
Blower Speed Control
The blower is capable of changing speeds to best match
the requirements of the system depending on which
mode the system is in (see Table 3 on page 14).
The unit will automatically switch to the required
speed for each mode. High sensible mode and
dehumidification mode are both communicated
separately from the LV. For more information on the
high sensible command from LV, please see LV1000
Service Instructions 2100-673.
Additional Indoor Airflow Alarms
Supply Air Temperature Alarm
When the supply air temperature sensor value is out of
range (-41.0 to 303.0°F), the controller will generate
a sensor failure alarm to indicate the sensor is not
working properly.
This alarm is fixed and cannot be adjusted.
Condenser Fan
Condenser Fan Components
Condenser Fan
The unit is equipped with a condenser fan that is
driven by an electronically commutated motor (ECM).
This fan is controlled by a 0-10v signal provided from
the controller. The fan operates between 100-1200
rpm.
To view the output of the condenser fan:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to
I/O Config
;
press ENTER key.
4. Press UP or DOWN keys to scroll to
Condenser Fan
(C15)
; press ENTER key.
5. Reference
Fan Speed
parameter for the current
output to the condenser fan
(see Figure 22).
FIGURE 22
Verifying Condenser Fan Output
If required, the condenser fan output can be manually
set for 5 minutes for troubleshooting purposes.
While looking at
Condenser Fan (C15)
screen:
1. Press ENTER key to scroll to
Fan OV Speed
(see
Figure 22).
2. Press UP or DOWN keys to change the value to the
desired override speed.
3. Press ENTER key to save the value and move
cursor to the
Override
parameter.
4. Press UP or DOWN keys to change the value from
Disabled
to
Enabled
.
5. The fan should now run at the selected speed. The
output can be verified by again referencing the
Fan
Speed
parameter.
The override will last for 5 minutes or until the
Override
parameter is set to
Disabled
again.
Due to design considerations of the condenser section
of the wall unit, placement/clearance of the motor/
fan blade is critical to heat dispersal. Should a change
of motor or fan blade be necessary, see Figure 23 for
proper clearance adjustment.
FIGURE 23
Fan Blade Setting
1.75"
