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Service bulletin SER23-021

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10242001
Published by NHTSA2023-09-07
Manufacturer's numberSER23-021
Manufacturer's date2023-08-11
NHTSA componentEQUIPMENT

NHTSA's summary

This bulletin requires inspection of ComfortPro® CCUs or service replacement CCU boards prior to installation, and describes the inspection and repair process. The JP10 connection needs to be inspected as some of these connections may have been assembled incorrectly, which could lead to component failure.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories

Vehicles listed
CARRIER COMFORTPRO

Listing a model year does not mean every vehicle of it is concerned: the document says which.