Troubleshooting - Johnson Controls TEC3322-1 Series Installation Manual

Troubleshooting

Table 15: Fault list (Part 1 of 3)
Faults
Remote Zone Temp Fail
Supply Temp Fail
Internal Sensor Fail
Dehum Unavailable
Service
Dirty Filter
Calibration Corrupt
Changeover Fail
Zone Temp Unreliable
Open Window
TEC3000 Series Networked and Wireless Proportional Fan Coil and Individual Zone Thermostat Controllers with
Probable causes
The External Zone Temperature
sensor has been disconnected or has
failed.
The External Supply Temperature
sensor has been disconnected or has
failed.
An internal sensor has failed on the
TEC.
Dehumidification is unavailable
because the zone humidity sensor has
failed or the humidity reading is not
reliable.
Equipment connected to the BI
configured for a Service alarm is
triggering the alarm.
Equipment connected to the BI
configured for a Dirty Filter alarm is
triggering the alarm.
Factory calibration data is lost or is not
installed.
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.
All sources of zone temperature are
unreliable, including the onboard
sensor.
The switch connected to the BI
configured for Open Window is sensing
that the window is opened, and control
has shut down.
Dehumidification Capability Installation Guide
Solutions
1. Check the wiring of the sensor.
2. If intentionally disconnected, reset sensors
through the menu.
3. If the problem persists, order replacement
units and return the affected devices to
Johnson Controls under the RMA program.
1. Check the wiring of the sensor.
2. If intentionally disconnected, result fault by
entering the menu, enter Control Setup, and
select Inputs to reset the sensors.
3. If the problem persists, order replacement
units and return the affected devices to
Johnson Controls under the RMA program.
Order replacement units and return the affected
devices to Johnson Controls under the RMA
program.
1. If the source of zone humidity was a BAS,
check the BAS to ensure that it is still online
and is providing the TEC with the humidity
reading. If removal of the BAS mapping was
intentional, reset the sensors through the
menu.
2. (For all models) If the problem persists, order
replacement units and return the affected
devices to Johnson Controls under the RMA
program.
Service the equipment by way of the
manufacturer's recommendation.
Replace the filter in the equipment as explained in
the manufacturer's instructions.
Order replacement units and return the affected
devices to Johnson Controls under the RMA
program.
Follow the same steps as Supply Temp Fail
alarm.
Order replacement units and return the affected
devices to Johnson Controls under the RMA
program.
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.
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