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