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CTR-CSER19-002 - Use of SWR5373 in EliteLINE units (69NT40-531/551)

Carrier Transicold is investigating reports from the field of false alarms on EliteLine model units, 69NT40-531 and 69NT40-551.

These reports have indicated that false Alarm 24, Compressor IP and Alarm 60, Defrost Sensor, have occurred after the software upgrade and the unit is operating on SWR5373.

At this time we recommend delaying the upgrade of software in these EliteLINE units until we complete our investigation.

Should an alarm 24 or 60 occur with SWR5373 loaded, downgrade the software to 5372 prior to taking any other action.

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