User’s Information Manual
16
4 SMART SYSTEM control module
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 supply sensor has not been selected as the control sensor,
only the system temperature will be displayed.
***.*F (***)
When the system supply 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 supply sensor.
Shorted The system supply 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 shorted.
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 shorted.
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 shorted.
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.