R
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
13
service
status
Heat Stages Status Screen.
Shows the status of the first and
second stages of heating.
DI SERVICE OFF
FILTER OK
MON
11-19-07
12:00 AM 72F
10.
service
status
service
status
HEAT STAGE 1 OFF
HEAT STAGE 2 OFF
5.
LED Description
Six LEDs on the face allow the occupant to view the current
operating status of the thermostat.
OCCUPIED
This LED will be lit whenever the unit is operating in the
occupied mode.
HEATING
This LED will be lit when any heat output is closed.
COOLING
This LED will be lit when any cooling output is closed.
FAN
This LED will be lit when the fan output is closed.
SERVICE
This LED will be lit when the high or low discharge air
limit has been reached, when the fan interlock has indi-
cated failure, or when the filter service or service input are
closed.
PROGRAM/DATA
This LED will be lit when the thermostat is within the pro-
gramming or clock setup menus. It will blink when the unit
is being accessed by a PC.
Additional monitoring is available by continually pressing the
service key.
Main Monitoring Screen.
Press
the service button to access the
following screens. (Date not
shown on SZ1022.)
Service Screen.
This message
may be followed by any or all of
the following: CHECK FILTER,
CHECK FAN, DISCHARGE HIGH,
DISCHARGE LOW, or CHECK
DI2.
Discharge Air Temperature
Screen.
Shows discharge air
temperature if sensor is used.
Outdoor Air Temperature
Screen.
Shows outdoor air tem-
perature if sensor is used. (Not
available on SZ1022.)
Override Status Screen.
Shows
whether the override is active and
if so, how many minutes remain-
ing.
service
status
MON
11-19-01
12:00 AM 72F
service
status
SERVICE STATUS
OK
1.
service
status
OUTDOOR AIR
TEMP
75F
3.
service
status
DISCHARGE AIR
TEMP
55F
2.
service
status
OVERRIDE
ON
178 MINUTES
4.
Cool Stages Status Screen.
Shows the status of the first and
second stages of cooling.
Third Stage and DI1 Status
Screen.
Shows the status of the
third stage and the status of the
fan interlock if DI1 is set for fan
interlock.
Third and Fourth Stage Status
Screen.
Shows the status of the
third and fourth stages.
DI1 Status Screen.
Shows the
status of DI1.
DI2 and DI3 Status Screen.
Shows the cool lockout into DI2
or DI2 status and filter status or
DI3 status.
Service LED is On
If the service LED is on, it may be for monitoring purpos-
es or it may indicate a critical problem. The first moni-
toring screen, which is used to indicate why the light is
on, can be accessed by pressing the SERVICE STATUS
button.
Outputs Will Not Shut Off
First check room temperature and setpoints to determine
whether the output should be on. There are delays and
minimum on and off times for the fan and heating and cool-
ing stages. Also, check the service status menus to verify
that the outputs are on. Turning the system to “off” will
instantly turn all outputs off. The thermostat can be reset
by pressing the system switch button and the service status
button simultaneously.
SERVICE SCREENS
Through repeated pressing of the SERVICE
STATUS button, the service screens (shown below) are dis-
played, which enables you to monitor various functions of
the Superstat.
service
status
COOL STAGE 1 ON
COOL STAGE 2 OFF
6.
COOL STAGE 3 OFF
FAN STATUS OK
7.
DI1 STATUS OK
9.
COOL STAGE 3 OK
COOL STAGE 4 OK
8.
service
status
service
status
sz1035
sz1022,
sz1031
