48 Introduction—ASC and N2 Bus Networking and Troubleshooting Guide
An effective troubleshooting technique is to use a CBLCON and watch its
LEDs. (Refer to Table 10.) The LEDs will indicate the problem. Another
technique is to exchange the component that is believed defective with a
working component of the same type. If the error no longer occurs, the
component is defective.
A noisy wire adjacent to the Zone Bus can also cause communication
errors. Noise can be periodically induced into the Zone Bus, thereby
causing sporadic communication failures between the laptop and the ASC.
Most often, noisy lines cause intermittent disruption, not total loss of
communication.
For more information on the HVAC PRO for Windows, refer to the HVAC
PRO for Windows User’s Manual (FAN 637.5).
Controls Group
FAN 636.3
507 E. Michigan Street
Application Specific Controllers Technical Manual
P.O. Box 423
Printed in U.S.A.
Milwaukee, WI 53201
Summary of Contents for METASYS ASC
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