Table 15: Fault list
Faults Probable causes Solutions
Touchscreen
Unavailable
The touchscreen components
failed 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. See Figure
6 and Table 3 for information to ensure
that you paired the CPU board and
base board correctly.
The previous upgrade has not
completed.
1. Upgrade the TEC3000 to the latest
released version.
2. Upgrade the TEC3000 to the
current version again.
Firmware Mismatch
The previous downgrade has
not completed because the
previous version is no longer
supported.
Reboot the TEC3000 to clear the fault.
USB Malfunction A USB drive has malfunctioned
and drawn more than the
maximum allowed current.
1. Attempt to insert and use the USB
drive again.
2. Try a new USB drive.
3. If problems persist, order
replacement units and return
the affected devices to Johnson
Controls under the RMA program.
Supply Fan Runtime
Limit Extended
The Supply Fan Runtime has
exceeded the configured
Supply Fan Runtime Limit.
1. Service the Supply Fan.
2. Reset the Supply Fan runtime.
Heating Ineffective The Supply Air Temperature
has not increased above
the configured Supply Air
Temperature Alarm Offset
while heating has been active
for at least the Supply Air
Temperature Alarm Delay.
Verify that the heating elements on the
rooftop are functioning properly.
Cooling Ineffective The Supply Air Temperature
has not decreased below
the configured Supply Air
Temperature Alarm Offset
while cooling has been active
for at least the Supply Air
Temperature Alarm Delay.
Verify that the cooling elements on the
rooftop are functioning properly.
TEC3000 Series On/Off or Floating Fan Coil Thermostats Installation Guide56
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