Table 15: Fault list
Faults
Probable causes
Solutions
Open Window
The switch connected to the BI
configured for Open Window
is sensing 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.
55
TEC3000 Series On/Off or Floating Fan Coil Thermostats Installation Guide