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Carrier HVAC Unit Controls: Operation & Troubleshooting

This document provides essential operational and troubleshooting guidance for Carrier's advanced single-package heating and cooling rooftop units.

Key Features Covered:

Detailed explanation of Product Integrated Controls (PIC) and their architecture.
Guidance on the Carrier Comfort Network (CCN) and Digital Air Volume (DAV) linkage.
Comprehensive overview of major control components and their functions.
Step-by-step procedures for unit start-up, operation, and system functions.
In-depth troubleshooting section addressing common issues, alarms, and diagnostic codes.
Information on various control options and accessories, including sensors, actuators, and network interfaces.

Supported Unit Series:

This guide covers the following Carrier unit series:

48ZJ, 48ZL, 48ZW
50ZJ, 50ZK, 50ZL, 50ZM, 50ZW, 50ZZ

Designed for commercial and industrial HVAC applications.

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