Contact: AIRSYS North America Phone: (855) 874-5380 Page 42 of 112
Email: ASNSupport@air-sys.com Web: http://airsysnorthamerica.com Rev 1.15
Warning. Never leave the site with the HVAC system in the off state. The site will have no cooling,
which likely will result in a high temperature alarm requiring an urgent site visit to correct. When
the HVAC system is on, the status in the bottom left corner of the main screen should read “ON”.
Execute the Step-Test
The step test systematically verifies that key components of the system are operating as expected. Note
the following considerations:
• The stages in the step test can be executed in any order; they do not need to be sequential.
• The step test takes the system out of automatic mode.
To perform the step test, follow these steps:
1. Hold Esc until the main screen is displayed.
2. From the Main Screen, press Prg and enter the password (0004).
3. Press Enter, the cursor should be over “Step Test”.
4. Press Enter to access the menu.
5. Press Enter, the cursor should be next to “Select HVAC ID”.
6. Press Up or Down until the unit to be tested is selected, then press Enter.
7. Press Down, then press Enter. The cursor should be next to STOP.
8. Use the Up and Down buttons to select the desired test and press Enter to confirm.
9. Repeat Step 8 for all 5 tests. Verify that all components are operating properly. The 5 tests are
supply fan, heater, condenser fan, compressor, and damper.
10. After testing is complete, switch the test to STOP and press Enter.
11. When the step test is complete, return to the main menu by holding Esc.
Table 14: Step Test
Optional: When running the supply fan, condenser fan, and compressor step tests, the speed of the
component can be changed to test variable speed operation.
1. Repeat steps 1-8 in the above section until the desired step test is selected.
2. Press Down, the screen should display “Test settings”.
3. Press Enter until the desired component is selected.
4. Press Up or Down to adjust the speed and press Enter.
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