Johnson Controls TEC2145-4 - Page 15

TEC2145-4 N2 Networked Thermostat Controller with Single Proportional Output and One-Speed Fan
Control Installation Instructions
15
Troubleshooting
See Table 6 for alarm messages. See Table 7 for
further troubleshooting details.
Accessories
All the optional accessories in Table 5 include mounting
hardware; contact the nearest Johnson Controls®
representative to order any of these parts.
Note: Review the technical specifications of the
optional accessories prior to their use in an application.
Repair Information
If the TEC2145-4 Thermostat Controller fails to operate
within its specifications, replace the unit. For a
replacement thermostat controller, contact the nearest
Johnson Controls representative.
Aux cont Determines the auxiliary contact
function and configuration.
Default: 0
(0) Not used,
or used for
reheat
If the sequence is set to reheat (2, 3, or 5),
ignore this parameter.
(1) Auxiliary
N.O.
Occupied = contact
closed
Unoccupied = contact
open
The output
aligns with
occupancy.
(2) Auxiliary
N.C.
Occupied = contact open
Unoccupied = contact
closed
(3) Auxiliary
N.O.
Occupied and fan On =
contact closed
Unoccupied and fan On
or Off = contact open
The output
aligns with
occupancy
and the fan
on command.
(4) Auxiliary
N.C.
Occupied and fan On =
contact open
Unoccupied and fan On
or Off = contact closed
(5) This selection option is not used.
DA/RA Choice of direct or reverse acting
analog output signal.
Default: DA
(RA): Reverse acting, 0 to 100% = 10 to 0 VDC
(DA): Direct acting, 0 to 100% = 0 to 10 VDC
Reheat Sets the duty cycle time for the
reheat output (if Option 2, 3, or 5 is
chosen in the SeqOpera
parameter).
Default: 0
(1): 10 seconds (six cycles per minute), for various equipment with
solid-state relays that withstand short duty cycles such as electric
heat.
(0): 15 minutes (four cycles per hour), for various equipment with
mechanical relays or contactors controlling mechanical reheat
systems.
UI3 dis Displays the supply or changeover
temperature when UI3 is configured
as an analog input (SS or COS).
Used as a diagnostic/service help,
to troubleshoot and diagnose
sensor operation.
Default: -40°F/-40°C
Not applicable
1. This parameter functions only when the TEC is used in conjunction with an onboard occupancy sensor, or a remote
occupancy sensor.
Table 4: Installer Configuration Menu (Part 6 of 6)
Parameter
Appearing
on Display
Description and Default Selection Options