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Installation & Operation Manual
59
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
shorted.
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.
11 Operating information (continued)