Johnson Controls TEC3612 User Manual

Table 8: Fault list
Faults Probable causes Solutions
The previous upgrade did not
complete.
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 exceeds 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 correctly.
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 correctly.
Supply Fan Fault The Supply Fan Status configured
for either BI1 or BI2 has not proved
within the configured Fan Alarm
Delay.
1. Verify that the Supply Fan is operating
when turned on.
2. Verify that the Supply Fan Status wiring is
connected correctly.
Zone Temperature Too Cold The Zone Temperature decreased
below the configured Zone Temp Low
Limit.
Verify that the TEC and the RTU heating are
enabled and functioning.
Zone Temperature Too Hot The Zone Temperature increased
above the configured Zone Temp
High Limit.
Verify that the TEC and the RTU cooling are
enabled and functioning.
TEC3000 Series On/Off or Floating Fan Coil Thermostats Quick Start Guide24

Johnson Controls TEC3612 Specifications

General

Brand	Johnson Controls
Model	TEC3612
Category	Controller
Language	English