Self Test Parameter Descriptions; Reset To Factory Defaults; Figure 8 Executing Self Test; Figure 9 Restoring Factory Default Settings - Bard MEGA-TEC W090A Service Instructions Manual

To execute a self test:
1. Press MENU key to access 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 Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Self Test A11
screen.
5. Press ENTER key to scroll to Enable parameter
(see Figure 8).
6. Press UP or DOWN key to change value to Yes. The
self test will begin.
FIGURE 8
Executing Self Test
Step Action
A Open economizer damper
B Close economizer Damper
C Turn on compressor
D Enable second stage
E Enable third stage
F Turn all cooling off
G Turn on electric heat
H Turn on electric heat stage 2
I Turn off all heating

Self Test Parameter Descriptions

Damper Time: This is the time (in seconds) allowed for
both the opening sequence and closing sequence.
Heat/Cool Time: This is the time (in seconds) allowed
for cooling sequence and heating sequence.
Status: This will display what the unit is doing as
the self test progresses. The following messages may
appear:
1. Not Active
2. Opening Damper
3. Closing Damper
4. Compressor Stage 1
5. Compressor Stage 2
6. Compressor Stage 3
7. Cooling Off
8. Electric Heat Stage 1
9. Electric Heat Stage 2
10. Heating Off
11. Self Test Stop
The unit will determine which items to test based on
the unit model number.

Reset to Factory Defaults

To reset to factory default settings:
1. Press MENU key to go to the Main Menu screen.
2. Use UP or DOWN keys and ENTER key to enter
3. Press UP or DOWN keys to scroll to Settings; press
4. Press UP or DOWN keys to scroll to Initialization;
5. Press UP or DOWN keys to scroll to the DEFAULT
6. Press ENTER key to scroll to Reset to Factory
7. Press UP or DOWN key to change value to YES;
Time Required
8. System will restart with default values.
Damper Time (120s)
Damper Time (120s)
Heat/Cool Time (60s)
Heat/Cool Time (60s)
Heat/Cool Time (60s)
--
Heat/Cool Time (60s)
Heat/Cool Time (60s)
--
ENGINEER password 9254.
ENTER key.
press ENTER key.
INSTALLATION screen.
Defaults: (see Figure 9).
press ENTER key.
FIGURE 9
Restoring Factory Default Settings
Manual 2100-671C
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