Trane MUA-SVP01A-EN manual SOLUTIONIf setpoints are not misadjusted

Page 38

Diagnostics

– No. Continue.

SOLUTION:If setpoints are not misadjusted

1.Is there a prior alarm such as Insufficient OA?

–Yes. See the Diagnostic section for the previous alarm.

–No. Continue.

2.Is the discharge air temperature (DA Temp), displayed on the BACview remote, reading 150°F or more?

–Yes. That 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.

–No. Contact factory.

FAULT CODE:Energy Save Mode 2

PROBLEM: The controller has turned off the burner enable output because it determined the burner's minimum firing rate exceeds the allowable equivalent temperature rise. See the Energy Savings Mode 2 section of this manual for more information.

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

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.If equipped, 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.

4.Do the dampers track with a change in the %OA setpoint? The dampers utilized on the unit are not linear with respect to airflow and openness, and as such, the proportion of outside air to damper movement will not be exactly

38

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 General Burner Control Heating ModeHeating/Ventilating/Cooling Operating Modes 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 Minimum Ventilation Functions100% Outside Air FreezestatUser Configured PID Control Direct Acting85ºF Reverse Acting Direct actingReverse acting Unit Resets Multiplexed InputsClock Set Fault Code Low Discharge Temperature DiagnosticsCritical Fault Codes 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 not running Fault Code Unit off/Fan onSolution If fan is running Solution If fan/motor is not running Fault CODEUnit on/Fan offSOLUTIONIf fan/motor is 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 SOLUTIONIf heat is desired Fault CODEInsufficient OASolution If setpoints are misadjusted SOLUTIONIf less outside air is desired Diagnostics Unit Modes Hotkey Menu SelectionMenu Selection Tree for BACview Menu Selection SET Points HotkeyAlarm History 64 Most Recent Alarm HotkeyResets Hotkey 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
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