Johnson Controls TEC3612 User Manual

Table 8: Fault list
Faults Probable causes Solutions
Calibration Corrupt Factory calibration data is lost or is
not installed.
Order replacement units and return the
affected devices to Johnson Controls under the
RMA program.
Changeover Fail The Supply Temperature Sensor is
not installed, has failed, or has been
disconnected and the TEC can no
longer detect changeover mode to
cool or heat.
Follow the same steps as Supply Temp Fail
alarm.
Zone Temp Unreliable All sources of zone temperature are
unreliable, including the onboard
sensor.
Order replacement units and return the
affected devices to Johnson Controls under the
RMA program.
Open Window The switch connected to the BI
configured for Open Window senses
that the window is opened, and
control has shut down.
1. Close the window to resume control.
2. Check sensor functionality with an
ohmmeter, and verify the wiring to the
TEC.
3. Order replacement units and return the
affected devices to Johnson Controls under
the RMA program.
Fan Lock The switch connected to the BI
configured for Fan Lock did not sense
airflow within 10 seconds of starting
the fan, and control has been shut
down.
1. Inspect equipment to ensure fan
functions.
2. Check sensor functionality with an
ohmmeter, and verify wiring to the TEC.
3. Reset fault by entering the menu, selecting
Fault Status, and selecting the Fan Lock.
4. Order replacement units and return the
affected devices to Johnson Controls under
the RMA program.
Humidity Unreliable The zone humidity reading was
reliable and has now failed.
1. If the source of zone humidity was the
onboard sensor, contact Johnson Controls
product sales and support.
2. If the source of zone humidity was a BAS,
check the BAS to ensure that it is still
online and providing the TEC with the
humidity reading. If removal of the BAS
mapping was intentional, reset sensors
through the menu.
The controller has detected an
internal fault that it cannot recover.
Order replacement units and return the
affected devices to Johnson Controls under the
RMA program.
Controller Fault
An unknown error has prevented the
controller from turning on.
Order replacement units and return the
affected devices to Johnson Controls under the
RMA program.
Touchscreen Unavailable The touchscreen components fail to
initialize.
1. Reboot the controller.
2. If problems persist, order replacement
units and return the affected devices to
Johnson Controls under the RMA program.
Board Mismatch The baseboard and CPU board are
paired incorrectly. An error message
appears on the TEC indicating the
model number of the baseboard and
CPU board.
Match the baseboard to its corresponding CPU
board.
TEC3000 Series On/Off or Floating Fan Coil Thermostats Quick Start Guide 23

Johnson Controls TEC3612 Specifications

General

Brand	Johnson Controls
Model	TEC3612
Category	Controller
Language	English