_edited.png)
RS-485 FCU Control Board
Connected Control. Streamlined Integration. Smarter Fan Coil Performance.
Advanced Communication for Modern HVAC Equipment
Supporting four-speed fan operation, heating and cooling control, temperature monitoring, equipment protection, and advanced control strategies, the RS-485 FCU Control Board provides a scalable solution for connected fan coil systems used in hospitality, commercial, and multi-unit residential projects.
![RS485-FUC-FCCB-_Intertek_Cert[1]_edited.jpg](https://static.wixstatic.com/media/a06e6d_b32c307755e1440ab63945ea515e3040~mv2.jpg/v1/fill/w_980,h_458,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/RS485-FUC-FCCB-_Intertek_Cert%5B1%5D_edited.jpg)
Designed for Connected HVAC Environments
The Omachron® Controls RS-485 FCU Control Board simplifies communication between wall controls and equipment through a reliable digital control platform. By replacing conventional parallel thermostat wiring with serial communications, manufacturers gain greater flexibility in equipment design while creating opportunities for enhanced functionality, simplified installation, and future-ready HVAC solutions.
_edited.png)
_edited.png)
Control
RS-485 Serial 9600 Baud
Digital Inputs
Flood
Float
Low Voltage Timer
Freeze
Aquastat
Auxiliary Input
Certifications
UL 94V-0 Flame Retardant Certified
Digital Outputs
W/Y Valve
Y Valve
E-Heat
Damper
Fan High
Fan Medium
Fan Low
Fan Ultra-Low
Designed for Manufacturers. Built for Reliability.
The Omachron® Controls RS-485 FCU combines digital communications with proven fan coil control capabilities, providing OEMs with a platform that supports evolving building requirements without increasing installation complexity
RS-485 Communication Architecture
Built around RS-485 serial communications at 9600 baud, the platform enables dependable communication between the room controller and fan coil equipment. This approach reduces wiring complexity while supporting more advanced operating strategies than conventional thermostat-based control systems.
Integrated Temperature Intelligence
An onboard 10k room temperature thermistor input provides accurate temperature monitoring directly at the control platform. This allows for more responsive comfort management while supporting consistent system performance across varying operating conditions.
Four-Speed Fan & Equipment Control
Supports high, medium, low, and ultra-low fan speeds along with dedicated heating valve, cooling valve, and electric heat outputs. Manufacturers can support a wide range of fan coil configurations while maintaining a common control platform across product families.
Built-In Equipment Protection
Integrated flood detection, float switch monitoring, freeze protection, aquastat inputs, and auxiliary safety monitoring help safeguard equipment while supporting dependable long-term operation. These protection functions help reduce equipment downtime and simplify maintenance planning.
Trusted for Fan Coil Applications
Have Questions About The RS-485 FCU Control Board?
Selecting the right communication architecture is critical to long-term equipment performance, installation efficiency, and building operation. Whether you're designing new communicating HVAC equipment, evaluating a transition from conventional controls, or developing a standardized product platform, our team can help. Submit your project details below and we'll work with you to identify the best Omachron® Controls solution for your requirements.
.png)
MENU
CONTACT
905-263-2805
ADDRESS
P.O Box 130,
Hampton, Ontario, L0B 1J0, Canada
POLICIES
© 2026 by Omachron Controls Inc.
The Omachron® logo and wordmark are trademarks of Omachron® Intellectual Property Inc. used under license.