Table 8: Network Engine LED designations, normal status, and descriptions
LED Designation
Normal Status
Descriptions/Other Conditions
BAT FAULT (Red)
Off Steady
On Steady = Battery defective.
Flicker = Data Protection Battery is not
installed. Connect or install battery.
FAULT (Red)
Off Steady
On Steady = General Fault. Fault
conditions are user configurable in
software. Pre-configured fault conditions
include excessive CPU flash or memory
use, excessive PWB temperature.
MODEM RX
Flicker
Flicker = Network engine modem is
connected and receiving data.
MODEM TX
Flicker
Flicker = Network engine modem is
connected and transmitting data.
Repair information
If you replace a network engine on a site with a new network engine for any reason or add a new
network engine to a site, you must update the site registration to ensure that the new network
engine is recognized and able to communicate in the site.
Refer to the
Replacing an NAE
section of the
NAE Commissioning Guide (LIT-1201519)
for information
on removing a network engine from service and configuring a replacement network engine to
communicate in a
Metasys
®
system site.
Except for replacing the data protection battery, the network engine cannot be repaired in the field.
If the network engine fails to operate, it must be replaced.
Batteries removed from this device must be recycled or disposed of in accordance with local,
national, and regional regulations. Only certified technicians or qualified building maintenance
personnel should service Johnson Controls
®
products.
NAE35/NAE45 Installation Guide
22