User’s Information Manual
17
4
SMART SYSTEM control module
(continued)
Status Display Screens
(cont’d)
By using the Previous/Next (
,
) arrow keys on the SMART SYSTEM display panel, you can navigate through the eight (8)
display screens. Each screen will contain two (2) viewable items. The following is a description of the individual items and
what they can display:
Screen
Display shows:
Description
#3
SYS: ***.*F
If the system sensor has not been selected as the control sensor,
only the system temperature will be displayed.
***.*F (***)
When the system sensor has been selected as the control sensor, the
control will display the system temperature as well as the set point in
parenthesis.
Open
The control does not detect the system sensor.
Shorted
The system sensor wires or the sensor itself has become grounded.
OUTDOOR: ***.*F
The control will display the outdoor air temperature as sensed by
the outdoor air sensor.
Open
The control does not detect the outdoor air sensor.
Shorted
The outdoor air sensor wires or the sensor itself has become
grounded.
Press the Next
arrow key on the SMART SYSTEM display to access Screen #4.
#4
FLUE: ***.*F
The control will display the flue temperature.
Open
The control does not detect the flue sensor.
Shorted
The flue sensor wires or the sensor itself has become grounded.
AUX: ***.*F
The control will display the temperature.
Open
The control does not detect the auxiliary sensor.
Shorted
The auxiliary sensor wires or the sensor itself has become
grounded.
Press the Next
arrow key on the SMART SYSTEM display to access Screen #5.
#5
FAN SPD: ****RPM
The control will display the actual fan motor RPM.
FLAME SIG: **.*uA
The control will display the flame signal in dc microamps.
Press the Next
arrow key on the SMART SYSTEM display to access Screen #6.
#6
SH CFH: OFF
The control has not received a call for heat from a remote
thermostat.
ON
The control has received a call for heat from a remote thermostat.
DHW CFH: OFF
The control has not received a call for heat from a SH remote
thermostat.
ON
The control has received a call for heat from a DHW thermostat.
Press the Next
arrow key on the SMART SYSTEM display to access Screen #7.
