Trane MUA-SVP01A-EN manual Fault CODEInsufficient OA, Solution If setpoints are misadjusted

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Diagnostics

SOLUTION: If OAT, RoomT or DAT are such that heat is required

1.Is the outside air temperature (OA Temp), displayed on the BACview remote, reading 150°F or more?

–Yes. The outside air sensor circuit or the sensor itself is shorted. Unplug the input jack from the AdaptAire controller. Did the display change to -40°F or less?‘

–No. There is a short in the controller input. Replace the controller.

–Yes. Disconnect the sensor wiring at the sensor. Connect an ohmmeter to the sensor. If it is shorted replace the sensor. At 70°F the resistance should be 10K?. See thermistor output curve for other temperatures. If it is not shorted, there is a short in the wiring between the sensor and the input plug. Determine cause and rectify. Refer to Appendix II for a typical 10K? thermistor output curve.

2.Is the outside air sensor in the direct sunlight?

–Yes. Provide shade for the sensor so the direct sun does not affect it.

–No. Contact factory.

SOLUTION: If setpoints are misadjusted

1.Is the Econmzr Setpoint set for 80°F?

–Yes. The outside air temperature is over 80°F and there should be no need for heat. If this is not the case, contact factory.

–No. Increase the ECONMZR SP setpoint. See Heating Mode - Energy Savings Mode 3 section of this manual for more information.

FAULT CODE:Insufficient OA

PROBLEM: The controller has turned off the burner enable output because the percentage of outside air has dropped below 20% for more than five minutes, and the unit is in the Heating mode.

SOLUTION:If heat is desired

1.Are the outside air hood filters or bird screen or any associated outside air ductwork obstructed?

–Yes. Clear obstruction or change filters.

–No. Continue.

2.Are the outside air and return air dampers and actuators working properly?

–Yes. Continue.

–No. Make necessary adjustments and force the unit to recalibrate. See Calibrate in the Resets Section of this manual.

3.Are the flow measuring station pitot tubes and pressure tubing clear?

–Yes. Continue.

–No. Clean and force the unit to recalibrate. See Calibrate in the Resets Section of this manual.

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

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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/Ventilating/Cooling Operating Modes Heating ModeGeneral 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 Critical Fault Codes DiagnosticsFault 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 FailureSolution If fan is running Fault Code Unit off/Fan onSolution If fan is not running SOLUTIONIf fan/motor is running Fault CODEUnit on/Fan offSolution 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 Solution If setpoints are misadjusted Fault CODEInsufficient OASOLUTIONIf heat is desired SOLUTIONIf less outside air is desired Diagnostics Menu Selection Tree for BACview Menu SelectionUnit 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