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Johnson Controls TEC3310 - User Manual

Johnson Controls TEC3310
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TEC3000 Series On/Off or Floating Fan Coil and Individual Zone
Thermostat Controllers with Dehumidification Capability
Installation Instructions
1
Refer to the QuickLIT website for the most up-to-date version of this document.
Applications
The TEC3000 Series On/Off or Floating Fan Coil and Individual Zone Thermostat Controllers are stand-alone and
field-selectable BACnet® MS/TP or N2 networked devices that provide control of the following:
• local hydronic reheat valves
• pressure-dependent variable air volume (VAV) equipment with or without local reheat
• two- or four-pipe fan coils
• cabinet unit heaters
• other individual zone equipment using an on/off or floating control input
The networked models feature a field-selectable Building Automation System (BAS) BACnet MS/TP or N2
communication capability that enables remote monitoring and programming for efficient space temperature control.
All models include a USB port configuration that reduces installation time by allowing simple backup and restore
features from a USB drive, which enables rapid cloning of configuration between like units.
Some models have occupancy sensing capability built into the device. These thermostat controllers maximize up to
30% energy savings in high-energy usage commercial buildings, such as schools and hotels, during occupied
times by using additional standby setpoints.
All models feature an intuitive onboard touchscreen UI with backlit display that makes setup and operation quick
and easy. Multiple fan configurations are supported for fan coil equipment types:
• single-speed
• multi-speed (two or three discrete speeds)
• variable-speed/EC motors (0 to 10 VDC control)
Some models support dehumidification on two-pipe fan coil units with reheat, and four-pipe fan coil units with or
without reheat. When no heating is required, the thermostat controller monitors space humidity and activates
dehumidification control as necessary. Heat and/or reheat is used as required to maintain the space temperature.
For optimal dehumidification performance, use a fan coil unit that has a multi-speed or variable-speed fan (VSF).
TEC3000 Series On/Off or Floating Fan Coil and Individual
Zone Thermostat Controllers with Dehumidification
Capability
Installation Instructions
TEC3310-xx-xxx, TEC3311-xx-xxx, TEC3312-xx-xxx, TEC3313-xx-xxx,TEC3610-xx-xxx, TEC3611-xx-xxx, TEC3612-xx-xxx, TEC3613-xx-xxx
Part No. 24-10787-6, Rev.
F
Issued July 2018
(barcode for factory use only)
24-10787-6, Rev. F
*24107876F*

Table of Contents

Questions and Answers

  • M
    Michelle Snow MDAug 25, 2025
    How to troubleshoot a 'Supply Temp Fail' error on a Johnson Controls Controller?
    • P
      Paul WilliamsonAug 26, 2025
      If your Johnson Controls Controller displays 'Supply Temp Fail', the external supply temperature sensor is either disconnected or has failed. You can try these steps: First, check the sensor wiring. If intentionally disconnected, reset the sensors by going to the menu, then Control Setup, and selecting Inputs. If the problem continues, order replacement units and return the affected devices to Johnson Controls under the RMA program.
  • R
    Ronald EdwardsAug 26, 2025
    Why is the TEC3000 zone temperature not changing fast enough on my Johnson Controls TEC3310?
    • J
      Jacob PetersAug 26, 2025
      If the TEC3000 zone temperature on your Johnson Controls Controller isn't changing fast enough compared to a calibrated sensor, it might be because the TEC3000 is set up for larger spaces by default when a proportional device is active. To resolve this, go to Control Setup > Tuning > Equipment Size and select 'Oversized'.
  • J
    Joshua AustinAug 27, 2025
    What does 'Changeover Fail' mean on my Johnson Controls Controller and how to fix it?
    • E
      Eric KempAug 27, 2025
      If your Johnson Controls Controller displays 'Changeover Fail', it indicates that the Supply Temperature Sensor is either not installed, has failed, or has been disconnected. As a result, the TEC can't detect the changeover mode for cooling or heating. You can follow the same troubleshooting steps as for a 'Supply Temp Fail' alarm.
  • S
    Sheila WilliamsAug 27, 2025
    How to resolve a 'Board Mismatch' error on my Johnson Controls TEC3310 Controller?
    • A
      Ashley WolfAug 28, 2025
      If your Johnson Controls Controller displays 'Board Mismatch', it means the baseboard and CPU board are not correctly paired. The TEC will show an error message with the model numbers of both boards. To fix this, match the baseboard to its corresponding CPU board.
  • A
    acostajesseAug 28, 2025
    What causes 'Humidity Unreliable' on a Johnson Controls TEC3310 Controller?
    • A
      alandoyleAug 28, 2025
      If the zone humidity reading on your Johnson Controls Controller was reliable but has now failed, and if the source of zone humidity was the onboard sensor, contact Johnson Controls product sales and support. If the source was a BAS, check the BAS to ensure it's online and providing the TEC with the humidity reading. If you intentionally removed the BAS mapping, reset the sensors through the menu.
  • E
    Erik JordanAug 29, 2025
    How do I fix a 'Firmware Mismatch' error on my Johnson Controls Controller?
    • J
      James ParkerAug 29, 2025
      If your Johnson Controls Controller displays 'Firmware Mismatch', it means a previous upgrade or downgrade hasn't completed. If it's due to an incomplete upgrade, upgrade the TEC3000 to the latest released version, then upgrade it to the current version again. If it's an incomplete downgrade because the previous version is no longer supported, reboot the TEC3000 to clear the fault.
  • L
    Lynn PhamAug 30, 2025
    What to do if my Johnson Controls Controller shows 'Open Window'?
    • R
      robertmckinneyAug 30, 2025
      If your Johnson Controls Controller displays 'Open Window' and control has shut down, it means the switch connected to the BI configured for Open Window is sensing that a window is open. To solve this: First, close the window. If the problem persists, check the sensor functionality with an ohmmeter and verify the wiring to the TEC. If needed, order replacement units and return the affected devices to Johnson Controls under the RMA program.
  • L
    Lynn OwensAug 23, 2025
    What to do if the touchscreen is unavailable on my Johnson Controls Controller?
    • S
      Stacey TapiaAug 23, 2025
      If the touchscreen components on your Johnson Controls Controller have failed to initialize, try rebooting the controller. If the problem continues, you may need to order replacement units and return the affected devices to Johnson Controls under the RMA program.
  • S
    Scott MontoyaSep 1, 2025
    Why is 'Dehum Unavailable' on my Johnson Controls Controller?
    • K
      Karen DavisSep 1, 2025
      If your Johnson Controls Controller displays 'Dehum Unavailable', it means dehumidification is unavailable because the zone humidity sensor has either failed or the humidity reading isn't reliable. If the zone humidity source was a BAS, check the BAS to ensure it's online and providing the TEC with the humidity reading. If you intentionally removed the BAS mapping, reset the sensors through the menu. If the problem continues, you may need to order replacement units and return the affected devices to Johnson Controls under the RMA program.
  • B
    Betty GordonSep 2, 2025
    What does 'USB Malfunction' mean on my Johnson Controls TEC3310?
    • K
      Karen JohnsonSep 2, 2025
      If your Johnson Controls Controller displays 'USB Malfunction', it means a USB drive has malfunctioned and drawn too much current. First, try inserting the USB drive again. If that doesn't work, try a different USB drive. If the problem persists, you might need to order replacement units and return the affected devices to Johnson Controls under the RMA program.

Summary

Installation Instructions

Applications

Details the standalone and networked applications for TEC3000 series controllers.

Installation Steps

Covers parts, location, and the physical process of installing the thermostat.

Wiring Diagrams and Connections

On;Off Wiring Diagram

Floating Wiring Diagram

Setup and Adjustments

USB Port Operations

Instructions for firmware updates and configuration backup/restore using USB.

Communication Mode Configuration

Unit Type Selection

Fan Configuration

Details on setting fan types, speeds, and modes for fan coil units.

Changeover Configuration

Dehumidification Control Configuration

Configuration details for enabling and adjusting dehumidification on fan coil units.

PID;PRAC+ Automatic Control Tuning

How to reset and manage the controller's PID tuning for optimal performance.

Setpoint Operation Modes

Occupancy Configuration

Methods for setting occupancy schedules and sources for the thermostat.

Commissioning Mode

How to test equipment wiring and functionality during installation.

Available Fault Diagnostics

Troubleshooting and Specifications

Fault List

Lists common faults, probable causes, and solutions for the TEC3000 controller.

Troubleshooting Details

Provides detailed explanations for symptoms and their resolutions.

Technical Specifications

Johnson Controls TEC3310 Specifications

General IconGeneral
BrandJohnson Controls
ModelTEC3310
CategoryController
LanguageEnglish

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