Eev Alarms; Refrigerant Low Pressure Alarm; Suction Temperature Alarm; Suction Pressure Alarm - Bard FUSION-TEC HR58APA Installation Support Materials

EEV Alarms

Refrigerant Low Pressure Alarm

When the low pressure transducer indicates a pressure
value less than the low pressure alarm setpoint of
40 PSIG and there is an active call for cooling,
the controller will disable the compressor (after a
180-second delay). NOTE: The second call will be
delayed based on the delay off value mentioned in the
compressor section. The controller will try to run the
refrigeration system two (2) times within 900 seconds
before the alarm will lock the compressor out. This
alarm needs to be manually cleared before compressor
operation will resume.
To adjust the low pressure alarm settings:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to System Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Alarm Setup
(A6); press ENTER key.
5. Press ENTER key to scroll to Delay to adjust how
long the compressor waits before turning the
compressor off (see Figure 2.15).
6. Press UP or DOWN keys to adjust the time delay.
7. Press ENTER key to scroll to Two Count Del.
8. Press UP or DOWN keys to adjust the delay value.
9. Press ENTER key to save.
10. Press the ESCAPE key several times to return to
Main Menu screen.
FIGURE 2.15
Adjusting Low Pressure Alarm Settings

Suction Temperature Alarm

When the suction 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 cannot be adjusted.

Suction Pressure Alarm

When the suction pressure sensor value is out of range
(0-250 PSIG), the controller will generate a sensor
failure alarm to indicate the sensor is not working
properly.
This alarm cannot be adjusted.

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
USER password 2000.
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 2.16 on page 32).
6. Press UP or DOWN keys to adjust the speed to the
desired output (see Table 2.1 on page 34).
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.
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