NOTE: If at any time a parameter is entered and the condenser display does not show 888 or if the display shows Err,
re-enter the parameter. If the display still shows Err after ENT is pressed, power cycle the control board by
unplugging P24, waiting 15 seconds and plugging P24 back in. Contact the factory if the parameter still displays Err
after ENT is pressed.
To replace the fan:
1.
Turn Off power to the unit using the disconnect.
2.
Use a voltmeter to verify that voltage is no longer present at the unit. Wait a minimum of 10 minutes to allow
the EC fan capacitors to discharge before proceeding.
3.
Remove the fan cover, disconnect electrical connections internal to the EC fan and remove the cable glands
from the EC fan to be replaced (see Figure 11.1 below, and Figure 11.2 on the next page.
Figure 11.1 Internal Wiring of Ziehl-Abegg Fan in Condenser
Item
Description
1
GND
2
Edge of cable's outer jacket should only extend far enough into the enclosure to make the electrical connections.
3
Not used on last fan.
4
Communication cable connection to the next fan. Not used on last fan.
5
Communication cable connection from the previous fan or electrical box.
11 Maintenance
59
Summary of Contents for Liebert MC series
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