Overview
This technical bulletin introduces the latest microprocessor evolution for the Carrier® Xarios® refrigeration range, designed to improve durability, environmental protection, and long-term reliability.
The updated micro hardware includes enhanced protection against moisture, corrosion, and wear, along with improved connectivity and updated software versions to ensure compatibility with current refrigeration system requirements.
This update applies to multiple Carrier® Xarios® and Integra® transport refrigeration units.
Key Improvements in the New Microprocessor
The latest microprocessor generation introduces several design enhancements to improve reliability and performance in demanding transport refrigeration environments.
Enhanced protection and durability improvements include:
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Anti-corrosion black coating to improve resistance against rust and environmental wear
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Additional casing sealant to strengthen protection against moisture intrusion
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Gore-Tex membrane for improved breathability while preventing water ingress
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Upgraded Cab & Command connector for improved performance and ease of use
These improvements help protect the electronic components from environmental exposure while maintaining stable operation in refrigeration units operating in demanding conditions.
Compatible Refrigeration Units
The updated microprocessor evolution applies to the following Carrier® unit ranges:
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Carrier® Xarios® 150 / 200
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Carrier® Xarios® 300 / 350
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Carrier® Xarios® 350MT
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Carrier® Xarios® 5 / 6 / 8
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Carrier® Xarios® 6MT / 8MT
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Carrier® Integra® 35X / 40X / 50X (US market)
Technicians servicing these models should be aware of the updated microprocessor design and associated software updates.
Software Compatibility Updates
The new microprocessor hardware is designed to operate with updated software versions to ensure optimal functionality.
Mono-temperature systems
Software upgraded from:
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3.05.0 and 5.01.0
To:
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4.04.1 and 6.01.1
Multi-temperature systems
Software upgraded from:
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3.41 and 3.22
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5.40 and 5.20
To:
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4.41.1 and 4.22.1
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6.40.1 and 6.20.1
Important compatibility notice
Older microprocessor versions are not compatible with the new software versions.
Older micro units previously available include:
When updating hardware or software, technicians must ensure the correct micro version is installed to avoid compatibility issues.
Spare Parts and Service Components
As part of the microprocessor evolution, updated service components are now available to support installation and maintenance of the latest Carrier® Xarios® systems.
These updated components include improved connectivity features, such as an external RJ45 connector, allowing easier access for diagnostics and servicing.
Myriad replacement parts
The following Myriad parts are available to support this hardware update:
MPN0154C – Microprocessor
OEM references: 12-00716-52 / -12 / -13
This microprocessor is designed to support the latest Carrier® Xarios® micro evolution hardware used across compatible refrigeration units.
MPN1270 – Connector
OEM reference: 22-61250-00
This connector supports the updated communication interface and includes the external RJ45 connection used for servicing and configuration.
These components ensure reliable integration with the updated system architecture and help maintain compatibility with the latest software versions.
Download the Full Technical Bulletin
For full diagrams, hardware details, and additional compatibility information, download the original bulletin.
Download PDF:
Carrier® Xarios® Micro Evolution Technical Bulletin
Need Assistance?
If you require assistance sourcing compatible microprocessors or spare parts for Carrier® Xarios® refrigeration units, the Myriad team can help identify the correct replacement components.
Explore compatible parts on our website or contact our team for technical support.