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7
Operating information
Status display screens
By using the Previous/Next (, ) arrow keys on the SMART SYSTEM display panel, you can navigate through the 11 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 #
HTR: OFF
HTR: STAND-BY
HTR: SETPOINT MET
HTR: PRE-PURGE
Screen #1
Line 1
HTR: IGNITER * ON
HTR: RUN STG ****
HTR: POST-PURGE
HTR: SERVICE MODE
Screen #1
OUT: ***F
Line 2
OUT: OPEN
OUT: SHORTED
Press the Next arrow key on the SMART SYSTEM display to access Screen #2.
Screen #2
INLET: ***F
Line 1
INLET: OPEN
INLET: SHORTED
Screen #2
RISE: ***F
Line 2
Press the Next arrow key on the SMART SYSTEM display to access Screen #3.
SYSSUP: ***F
Screen #3
SYSSUP: OPEN
Line 1
SYSSUP: SHORTED
58
Status Display Screens
Display Shows
Description
The unit has been turned OFF by the Enter/Reset button on the
SMART SYSTEM display panel.
The unit's water temperature set point has been met and there is
no call for heat demand being received from either the external
thermostat or the BMS.
The unit's water temperature set point has been met, but is still
receiving a call for heat from either a remote thermostat or a BMS.
The unit has initiated the combustion air purge cycle upon a call for
heat.
The unit has begun the igniter heatup cycle prior to the trial for
ignition. Display will show IGNITER A or IGNITER B depending on
which stage has priority.
The unit has fired and is running at the displayed number of stages
(1,2,3,4).
The call for heat has been satisfied and the unit runs the fan to clear
the combustion chamber and vent system of residual flue products.
The unit has been placed in a temporary mode that will allow the unit
to fire for the purpose of combustion analysis.
The outlet temperature is displayed by the control.
The control does not detect the outlet sensor.
The outlet sensor wires or the sensor itself has become shorted.
The inlet temperature is displayed by the control.
The control does not detect the inlet sensor.
The inlet sensor wires or the sensor itself has become shorted.
The difference between the inlet temperature and the outlet
temperature is displayed.
The system supply temperature is displayed by the control.
The control does not detect the system supply sensor.
The system supply sensor wires or the sensor itself has become shorted.
Installation & Operation Manual
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