Manual 2100-670B
Page
14 of 33
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. The blowers on both the
HR36AP* and HR58AP* models use a 10" diameter
wheel. The HR36AP* operates between 250-850 rpm
while the HR58AP* operates 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 16).
FIGURE 16
Putting Blower Output into Override Mode
FIGURE 15
Electronic Expansion Valve (EEV) and Service Tool
6. Press UP or DOWN keys to adjust the speed to the
desired output (see Table 3A or 3B).
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.
