Trane MUA-SVP01A-EN manual Unit Resets, Multiplexed Inputs

Page 24

Functions

Unit Resets

This section should assist the user in resetting alarms and cycle counters which have been displayed on the BACview.

ALARM. To reset an alarm scroll through the menu tree, locate the Unit Resets branch and select Alarm. Press the Enter key. The word OFF should flash. Now press the INC key and the word ON should flash on the display. Press the Enter key again and ON should stop flashing. Repeat this process so the word OFF is displayed and not flashing. The alarm has now been cleared and the Alarm RS function has been rearmed.

CALIBRATE. The Calibrate function forces the controller to recalibrate the return air flow station. The recalibration will occur immediately if the fan is running or at the next fan start. To recalibrate scroll through the menu tree, locate the Unit Resets branch and select Calibrate. Press the Enter key. The word OFF should flash. Now press the INC key and the word ON should flash on the display. Press the Enter key again and ON should stop flashing. Repeat this process so the word OFF is displayed and not flashing. The calibration has now been initiated and the Calibration function has been rearmed.

FAN COUNT. Fan Count records each fan start. To reset a fan count scroll through the menu tree, locate the Unit Resets branch and select Fan Count. Press the Enter key. The word OFF should flash. Now press the INC key and the word ON should flash on the display. Press the Enter key again and ON should stop flashing. Repeat this process so the word OFF is displayed and not flashing. The fan count has now been cleared and the Fan Count function has been rearmed.

HEATING COUNT. Heating Count records each burner start. To reset a heating count scroll through the menu tree, locate the Unit Resets branch and select Heating Count. Press the Enter key. The word OFF should flash. Now press the INC key and the word ON should flash on the display. Press the Enter key again and ON should stop flashing. Repeat this process so the word OFF is displayed and not flashing. The heating count has now been cleared and the Heating Count function has been rearmed.

COOLING COUNT. Cooling Count records each cooling start. To reset a cooling count scroll through the menu tree, locate the Unit Resets branch and select Cooling Count. Press the Enter key. The word OFF should flash. Now press the INC key and the word ON should flash on the display. Press the Enter key again and ON should stop flashing. Repeat this process so the word OFF is displayed and not flashing. The cooling count has now been cleared and the Cooling Count function has been rearmed.

Multiplexed Inputs

DDC controllers are designed with a finite number of inputs and outputs. Multiplexing expands the functionality of the controller by allowing multiple devices to effectively share the same input. This is usually accomplished by connecting resistors, either in a series or parallel configuration, to an analog

24

Direct-Fired Indoor and Outdoor Units • MUA-SVP01A-EN

Page 23 Page 25
Image 24
Page 23 Page 25
Contents Controls Programming Guide JanuaryOverview Networking Direct-Fired Indoor and Outdoor Units MUA-SVP01A-EN Contents Contents Unit Operating Modes MDT ControlsMRT Controls MRT-Pro ControlsUnit Operating Modes MRT-Expert Controls Unit Operating Modes Heating Mode Heating/Ventilating/Cooling Operating ModesGeneral Burner Control Unit Operating Modes Ventilation Mode Cooling Mode M P E R a T U R E S EManual Mode Damper Control ModesMixed Air Temperature Mode Building Pressure Mode Functions 100% Outside AirMinimum Ventilation FreezestatUser Configured PID Control Direct Acting85ºF Reverse Acting Direct actingReverse acting Unit Resets Multiplexed InputsClock Set Diagnostics Critical Fault CodesFault Code Low Discharge Temperature Diagnostics Direct-Fired Indoor and Outdoor Units MUA-SVP01A-EN Fault Code Safety Circuit Open Fault CODEBurner Status SOLUTIONIf fan is running check prior alarm logFault Code Burner Hand Diagnostics Non-Critical Fault Codes Fault Code Flame FailureFault Code Unit off/Fan on Solution If fan is runningSolution If fan is not running Fault CODEUnit on/Fan off SOLUTIONIf fan/motor is runningSolution If fan/motor is not running Fault Code Check Airflow Switches Fault Code Clogged Filter Switch SOLUTIONIf clogged filter switch is closingFault CODEEnergy Save Mode SOLUTIONIf setpoints are misadjustedSOLUTIONIf setpoints are not misadjusted Solution If OAT, RoomT or DAT are such that heat is requiredDiagnostics Fault CODEInsufficient OA Solution If setpoints are misadjustedSOLUTIONIf heat is desired SOLUTIONIf less outside air is desired Diagnostics Menu Selection Menu Selection Tree for BACviewUnit Modes Hotkey Menu Selection SET Points HotkeyAlarm Hotkey Resets HotkeyAlarm History 64 Most Recent Status Menu HotkeyUser Configurable Output Hotkey Schedules HotkeyClockset Hotkey Help HotkeyFuel Select Hotkey Thermostat Output Curve Ohms Thermistor Output CurveAirflow Station Layout Airflow station layoutZone 583 Controller Specifications Network CommunicationZone 583 Controller Specifications Rnet MRT-Pro or Room Air sensorTypical Wiring Schematic Non-recirculating with evap Dfoa and Dfia model diagramTypical Wiring Schematic Recirculating Dfoa and Dfia model diagrams Recirculating Dfoa and Dfia model diagram Typical Wiring Schematic Trane
Top Page Image Contents