System Pressures; Mode; Figure 2.13 Overriding Eev Output; Service Tool - Bard FUSION-TEC HR58APA Installation Support Materials

To manually override the valve:
NOTE: The unit must be off to perform this 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 TEEV Service
(C16); press ENTER key.
5. Press ENTER key to scroll to Enable (see Figure
2.13).
6. Press UP or DOWN key to change Disable to
Enable.
7. Press ENTER key to scroll to Position.
8. Press UP or DOWN keys to adjust to the desired
value.
9. Press ENTER key to save.
10. Press the ESCAPE key several times to return to
Main Menu screen.
FIGURE 2.13
Overriding EEV Output
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FIGURE 2.14
Electronic Expansion Valve (EEV) and Service Tool
The valve can also be opened or closed using the EEV
service tool (Bard Part # 2151-021). This magnetic
EEV service tool (shown in Figure 2.14) is used to
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.