45. Use the UP or DOWN arrow button to see if any of the following errors are shown.
115: Unable to communicate with Fan 1.
215: Unable to communicate with Fan 2.
315: Unable to communicate with Fan 3.
415: Unable to communicate with Fan 4.
• If any of these errors appear, check the communication wiring at the problem fan and the
fan before it.
• If the wiring is correct and properly wired to the terminal, repeat the fan addressing
procedure in steps 30 through 36.
46. If none of the errors listed in step 45 displays, press the ESC button.
8.8.1 Verifing the Fan Address
To verify that each fan has a unique address:
1. Use the UP or DOWN arrow button until C-- displays.
2. Press the ENT button.
3. In the Manual/System Control Selection parameter use the UP or DOWN arrow button until
C24 displays.
4. In the Manual Control configuration parameter, press the ENT button.
5. Use the UP or DOWN arrow button to select 0.
6. Press the ENT button.
The reads "888" if the command is accepted.
7. Press the ESC button to display C24 .
8. Use the UP or DOWN arrow button until C34 displays.
9. Press ENT button.
If Fan 1 is running, the fans speed should display in terms of percentage of full speed. If Fan 1 is
not running, 0.00 should display.
10. Use the UP or DOWN arrow button to enter 100% speed.
11. Press the ENT button.
The display reads "888" if the command is accepted.
• Fan 1 should speed up to 100%, and all the other fans should stay the same speed.
12. If Fan 1 is not running or if any of the other fans also speed up to 100%, steps 30 through 36 of
Replacing the Condenser Fan on page35, must be repeated.
13. Press the ESC button for the parameter to be shown on the display.
14. Repeat steps 3 through 8 for the rest of the fans, if present.
• C35: for Fan 2.
• C36: for Fan 3.
• C37: for Fan 4.
NOTE: All fans should be at 100% speed.
15. Use the UP or DOWN arrow button until C24 displays.
16. Press the ENT button.
17. In the System Control configuration parameter, use the UP or DOWN arrow button to select 1.
18. Press the ENT button.
The display flashes "888" if the command is accepted.
19. Press the ESC button to display C24.
All fans should return to a normal speed based on the pressure input and the state of indoor
unit’s compressor.
Vertiv | Liebert® DSE500™ Installer/User Guide
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