Johnson Controls TEC3000 Series Quick Start Manual page 20

Table 8: Fault list
Faults
Controller Fault
Touchscreen Unavailable
Board Mismatch
Firmware Mismatch
USB Malfunction
Supply Fan Runtime Limit
Extended
Heating Ineffective
Cooling Ineffective
Supply Fan Fault
Zone Temperature Too Cold
Zone Temperature Too Hot
20 TEC3000 Series Proportional Fan Coil Thermostats Quick Start Guide
Probable causes
The controller has detected an
internal fault that it cannot recover.
An unknown error has prevented the
controller from turning on.
The touchscreen components fail to
initialize.
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.
The previous upgrade did not
complete.
The previous downgrade has not
completed because the previous
version is no longer supported.
A USB drive has malfunctioned and
drawn more than the maximum
allowed current.
The Supply Fan Runtime exceeds the
configured Supply Fan Runtime Limit.
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.
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.
The Supply Fan Status configured
for either BI1 or BI2 has not proved
within the configured Fan Alarm
Delay.
The Zone Temperature decreased
below the configured Zone Temp Low
Limit.
The Zone Temperature increased
above the configured Zone Temp
High Limit.
Solutions
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. Reboot the controller.
2. If problems persist, order replacement
units and return the affected devices to
Johnson Controls under the RMA program.
Match the baseboard to its corresponding CPU
board.
1. Upgrade the TEC3000 to the latest released
version.
2. Upgrade the TEC3000 to the current
version again.
Reboot the TEC3000 to clear the fault.
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.
1. Service the Supply Fan.
2. Reset the Supply Fan runtime.
Verify that the heating elements on the rooftop
are functioning correctly.
Verify that the cooling elements on the rooftop
are functioning correctly.
1. Verify that the Supply Fan is operating
when turned on.
2. Verify that the Supply Fan Status wiring is
connected correctly.
Verify that the TEC and the RTU heating are
enabled and functioning.
Verify that the TEC and the RTU cooling are
enabled and functioning.