Manual 2100-670
Page
14 of 32
manually open the EEV. To do this, remove the EEV
stator coil (red color with retaining nut on top), slide
the magnetic tool over the shaft where the stator was
removed and turn in a clockwise direction to open the
valve to the full open position (directional arrows are
provided on the tool). Opening the valve to the full
open position will aid in the refrigerant reclamation and
evacuation processes.
Following the above procedure, reapply the EEV stator
coil and retaining nut. Upon powering the unit back up,
the control board will automatically drive the EEV back
to the fully shut position, and then back to the 20%
open position prior to starting the compressor back
up. Once the compressor starts, the control board will
again modulate the EEV position to control the system
superheat.
System Pressures
To view system pressure and temperatures during this
process:
1. From the Status screen, press UP or DOWN key
until Quick Menu displays Unit Information icon
( ). Press ENTER key.
2. Press UP or DOWN keys to scroll to
EEV 1 Circuit
and
EVD 1 Compressor
screens.
3. Reference the
Pressures
and
Temperatures
on
EVD
1 Compressor
and the
Superheat
and
Subcooling
on
EEV 1 Circuit
.
Additional EEV Alarms
Low Superheat Alarm
This alarm will become active when the calculated
superheat goes below 5°F. This alarm will clear itself
when the condition is no longer present.
This alarm cannot be adjusted.
Indoor Airflow
Indoor Airflow Components
Blower
The unit is equipped with a blower that is driven by an
electronically commutated motor (ECM). This blower
is controlled by a 0-10v signal provided from the
controller. This 0-10v signal is converted to a PWM
signal with an adapter. This blower uses a 10" diameter
wheel operating between 250-1400 rpm.
The blower output can be put into an override mode for
verification or troubleshooting. To put the blower into
override:
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
Blower Fan
(C13)
; press ENTER key.
5. Press ENTER key to scroll to
Blower OV Speed
(see
Figure 15).
6. Press UP or DOWN keys to adjust the speed to the
desired output (see Table 3).
7. Press ENTER key to scroll to
Override
.
8. Press UP or DOWN key to change
Disabled
to
Enabled
.
9. Press ENTER key to save.
10. Press the ESCAPE key several times to return to
Main Menu screen.
FIGURE 15
Putting Blower Output into Override Mode
Mode
Speed
Percentage
Controller
Output Volts
CFM
Freezestat Active
80.0
8.0 v
2260
High Sensible Full
Load Cooling
75.0
7.5 v
2180
High Sensible Part
Load Cooling
50.0
5.0 v
1705
Standard Full
Load Cooling
55.0
5.5 v
1830
Standard Part
Load Cooling
35.0
3.5 v
1335
Economizer Speed
45.0
4.5 v
1600
Heating
35.0
3.5 v
1335
Dehumidification
Mode
35.0
3.5 v
1335
TABLE 3
Blower Speeds
