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    AI Overview
    FCU (Fan Coil Unit) digital thermostats are precision controllers managing temperature, humidity, and fan speeds in HVAC systems, offering 3-speed fan control and on/off valve management for 2-pipe or 4-pipe systems. Modern units feature digital displays, touchscreen interfaces, remote Wi-Fi access via mobile apps, and BMS integration (Modbus/BACnet) for energy efficiency. 
    Key Control Features & Functions 
    • Temperature & Fan Speed Control: Typically, these controllers offer 3-speed fan control (High, Medium, Low) and precise temperature management for heating and cooling.
    • System Compatibility: Designed for 2-pipe or 4-pipe fan coil units, handling valve actuators and fan motors.
    • Programmable Scheduling: Offers timers and daily/weekly scheduling for automated energy savings.
    • Remote/Smart Control: Many models include Wi-Fi or Modbus RS485 connectivity for remote monitoring, BMS integration (e.g., BACnet), and smart home apps.
    • Advanced Sensors: Some units include built-in sensors for humidity or CO2, ensuring improved air quality. 
    Common Models & Applications 
    • Honeywell T6861 Series: Commonly used for 2-pipe or 4-pipe fan coil units in 220V/110V systems.
    • Resideo TH428WPN-C: Designed for underfloor heating and fan coil valve/fan control.
    • E-TOP FT-09: Features MODBUS protocol for building automation.
    • KMC AppStat: BACnet-compatible for in-room FCU control. 
    Installation & Maintenance 
    • Power: Usually operates on 230V or 110V AC, requiring professional installation.
    • Wiring: Connects to valves, fan motors, and often includes sensors for pipe temperature.
    • Calibration: Proper, regular calibration is necessary to maintain accurate temperature regulation. 
    • TH428WPN-C Digital Thermostat FCU and UFH 2 in 1 Control
      The TH428WPN-C digital thermostat is de- signed for under floor heating valve control and 3-speed fan and valve control in a fan c...
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      Digital Programmable Heating and Cooling FCU Thermostat. This digital programmable heating and cooling FCU thermostat is designed ...
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      The KMC AppStat combines the power of a space-mounted equipment controller with the convenience of built-in temperature, humidity ...
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    • Honeywell Digital Thermostat FCU Air Conditioner Remote ...
      Item description report. Honeywell T6861 Digital Thermostat FCU Air Conditioner Remote Temperature Controller Vertical T6861V2WG T...
      AliExpress
    • FCU digital thermostat with modbus protocol - E-TOP Controls
      Mar 13, 2023 — Modbus digital thermostats are widely used in building automation and hotel HVAC fan coil units by RS485 terminal. The thermostats...
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    • Honeywell Digital Thermostat FCU Air Conditioner Remote ...
      Honeywell Digital Thermostat FCU Air Conditioner Remote Temperature Controller Vertical 220V 110V Green Blue T6861V2WG T6861V1WG. ...
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    • Verified Supplier Digital FCU Thermostat Smart Home Integration
      Functions and Features of Digital FCU Thermostats: A Comprehensive Guide * Digital Display. Accurate Temperature Control. * Set Po...
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    Show all
    • TH428WPN-C Digital Thermostat FCU and UFH 2 in 1 Control
      The TH428WPN-C digital thermostat is de- signed for under floor heating valve control and 3-speed fan and valve control in a fan c...
      Resideo
    • Digital Programmable Heating and Cooling FCU Thermostat
      Digital Programmable Heating and Cooling FCU Thermostat. This digital programmable heating and cooling FCU thermostat is designed ...
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    • BAC-4003CW0001: AppStat: FCU, 3-Speed or Mod Fan, On ...
      The KMC AppStat combines the power of a space-mounted equipment controller with the convenience of built-in temperature, humidity ...
      KMC Controls
    • Honeywell Digital Thermostat FCU Air Conditioner Remote ...
      Item description report. Honeywell T6861 Digital Thermostat FCU Air Conditioner Remote Temperature Controller Vertical T6861V2WG T...
      AliExpress
    • FCU digital thermostat with modbus protocol - E-TOP Controls
      Mar 13, 2023 — Modbus digital thermostats are widely used in building automation and hotel HVAC fan coil units by RS485 terminal. The thermostats...
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    • Honeywell T6861 Digital Thermostat FCU Air Conditioner Remote ...
      I recommend turning off the power before starting, and double-checking the voltage compatibility—this model is designed for 230V s...
      AliExpress
    • Honeywell Digital Thermostat FCU Air Conditioner Remote ...
      Honeywell Digital Thermostat FCU Air Conditioner Remote Temperature Controller Vertical 220V 110V Green Blue T6861V2WG T6861V1WG. ...
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    • Verified Supplier Digital FCU Thermostat Smart Home Integration
      Functions and Features of Digital FCU Thermostats: A Comprehensive Guide * Digital Display. Accurate Temperature Control. * Set Po...
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    • FCU Controllers - Smart Thermostats for HVAC Efficiency
      The functions of the FCU controller 3 include; * Temperature Control. * Humidity Control. * Zone Control. * Fan Speed Control. * T...
      Alibaba.com
    • Smart FCU Temperature Controller - WiFi & Programmable - Alibaba
      Energy Efficiency: Modern FCU controllers use adaptive algorithms to minimize energy consumption while maintaining setpoints, cont...
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    • Beginner's Guide: Honeywell Thermostat + FCU Connection ...
      Apr 12, 2026 — hello everyone welcome to Thick Refrigeration. in today's video I'll show you how to connect a Honeywell digital thermostat to a f...
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    • Fan Coil Unit (FCU) Controller – DEOS Controls Americas Inc.
      The BACnet FCU controller is a fully configurable application-specific controller that offers individual zone control with a fan c...
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    • Buy FCU Digital Thermostat Wireless Smart AC Control
      Types of FCU Digital Thermostats. An FCU digital thermostat is a precision control device used to regulate temperature, humidity, ...
      www.alibaba.com
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    My Ad Center

    Web results

    Fan Coil Thermostat


    Amazon.com
    https://www.amazon.com › fan-coil-thermostat › k=fan...
    Amazon.com
    https://www.amazon.com › fan-coil-thermostat › k=fan...
    This product is certified by Amazon to work with Alexa. This product can be controlled with your voice through Alexa-enabled devices such as Amazon Echo and ...Read more
    FCU Digital Thermostat control from www.amazon.com
    4.5 store rating (11K) · 30-day returns

    Digital Programmable Heating and Cooling FCU Thermostat


    E-TOP Controls
    https://www.etopcontrols.com › FCU Thermostat
    E-TOP Controls
    https://www.etopcontrols.com › FCU Thermostat
    This digital programmable heating and cooling FCU thermostat is designed to controls the fans, valves, dampers or electric heater in fan coil units and heating ...Read more
    FCU Digital Thermostat control from www.etopcontrols.com

    AppStat: FCU, 3-Speed or Mod Fan, On/Off or Mod Valves


    KMC Controls
    https://www.kmccontrols.com › product › appstat-fcu-3...
    KMC Controls
    https://www.kmccontrols.com › product › appstat-fcu-3...
    The KMC AppStat combines the power of a space-mounted equipment controller with the convenience of built-in temperature, humidity and motion sensors.Read more
    FCU Digital Thermostat control from www.kmccontrols.com

    TH428WPN-C Digital Thermostat FCU and UFH 2 in 1 ...


    Resideo
    https://www.resideo.com › comfort › fan-coil-thermostats
    Resideo
    https://www.resideo.com › comfort › fan-coil-thermostats
    The TH428WPN-C digital thermostat is de- signed for under floor heating valve control and 3-speed fan and valve control in a fan coil system.Read more
    FCU Digital Thermostat control from www.resideo.com
    Free delivery over $50 · 180-day returns

    Digital Central Air Conditioning FCU Fan Coil Unit ...


    Amazon.com
    https://www.amazon.com › Conditioning-Thermostat-Pr...
    Amazon.com
    https://www.amazon.com › Conditioning-Thermostat-Pr...
    Mode switching: Provide multiple operating modes such as cooling, heating, and sleep, and users can switch according to actual scenarios and needs to achieve ...Read more

    Buy FCU Digital Thermostat Wireless Smart AC Control


    Alibaba.com
    https://www.alibaba.com › showroom › fcu-digital-ther...
    Alibaba.com
    https://www.alibaba.com › showroom › fcu-digital-ther...
    An FCU digital thermostat is a precision control device used to regulate temperature, humidity, and airflow in a Fan Coil Unit (FCU) within HVAC (Heating, ...Read more
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    Installation details of FCU Thermostat with control wiring ...


    YouTube · HVAC World
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    E-TOP Controls
    https://www.etopcontrols.com › fcu-thermostat
    E-TOP Controls
    https://www.etopcontrols.com › fcu-thermostat
    This 230Vac surface mounted thermostat is designed to control the fans, valves, dampers or electric heater in fan coil units and heating applications.Read more
    FCU Digital Thermostat control from www.etopcontrols.com
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    Web results

    Energy Controls / Intelligent Central & FCU Digital ... - eBay


    eBay
    https://www.ebay.com › ... › Programmable Thermostats
    eBay
    https://www.ebay.com › ... › Programmable Thermostats
    Energy Controls / Intelligent Central & FCU Digital Thermostat / ITH1000 Series. Wadi Al Barkh (366). 99.6% positive feedback. $94.05or Best Offer. Was $99.00 ...Read more
    FCU Digital Thermostat control from www.ebay.com
    $94.05$99 · In stock · $31 delivery

    FCU Air Conditioner Digital Fan Coil Unit Manual Control ...


    Hotowell
    https://www.hotowell.com › product › Hotowell-FCU-Ai...
    Hotowell
    https://www.hotowell.com › product › Hotowell-FCU-Ai...
    The digital thermostat is designed to controls the fans, valves, dampers or electric heater in fan coil units and heating applications.Read more
    FCU Digital Thermostat control from www.hotowell.com
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