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Trane Direct-Fired Indoor and Outdoor Make-Up Air Units, MUA-SVP01A-EN FAULT CODE:Energy Save Mode 2

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

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 ch ange to -40 °F o r le ss?

– 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

Contents

Main Overview NETWORKING ADAPTAIRE DEFAULT SETTINGS Page Contents Unit Operating Modes Functions Diagnostics Menu Selection Contents Thermostat Output Curve Airflow Station Layout I/O Zone 583 Controller Specifications Typical Wiring Schematic Unit Operating Modes MDT Controls: MRT Controls: MRT-Pro Controls: Page MRT-Expert Controls: Page Heating/Ventilating/Cooling Operating Modes Heating Mode General Burner Control Page Ventilation Mode Cooling Mode Figure 1. Cooling Mode Damper Control Modes Manual Mode Mixed Air Temperature Mode Building Pressure Mode Functions 100% Outside Air Minimum Ventilation Freezestat Clogged Filter User Configured PID Control DIRECT ACTING Page REVERSE ACTING Page Unit Resets Multiplexed Inputs Clock Set Diagnostics Critical Fault Codes FAULT CODE: Low Discharge Temperature Page SOLUTION: If burner was not operating prior to shutdown (check prior alarm log) FAULT CODE: Safety Circuit Open SOLUTION:If fan is running (check prior alarm log) FAULT CODE:Burner Status FAULT CODE: Burner Hand FAULT CODE: Flame Failure Diagnostics - Non-Critical Fault Codes FAULT CODE: Unit off/Fan on SOLUTION: If fan is running SOLUTION: If fan is not running FAULT CODE:Unit on/Fan off SOLUTION:If fan/motor is running SOLUTION: If fan/motor is not running FAULT CODE: Check Airflow Switches SOLUTION:If high airflow switch is opening. Do not adjust the switch setpoints SOLUTION:If low airflow switch is opening. Do not adjust the switch setpoints FAULT CODE: Clogged Filter Switch SOLUTION:If clogged filter switch is closing. FAULT CODE:Energy Save Mode 1 SOLUTION:If setpoints are misadjusted SOLUTION:If setpoints are not misadjusted FAULT CODE:Energy Save Mode 2 SOLUTION: If OAT, RoomT or DAT are such that heat is required FAULT CODE:Energy Save Mode 3 SOLUTION: If OAT, RoomT or DAT are such that heat is required SOLUTION: If setpoints are misadjusted FAULT CODE:Insufficient OA SOLUTION:If heat is desired SOLUTION:If less outside air is desired Page Menu Selection Tree for BACview UNIT MODES HOTKEY - 2 Menu Selection Status Alarm SET POINTS HOTKEY - 3 STATUS MENU HOTKEY - 4 Note: The Status Menu always displays the current status of the fan, burner and cooling. ALARM HOTKEY - 1 Alarm History (64 Most Recent) RESETS HOTKEY - 6 SCHEDULES HOTKEY- 7 USER CONFIGURABLE OUTPUT HOTKEY - 8 CLOCKSET HOTKEY - 0 HELP HOTKEY - 5 FUEL SELECT HOTKEY - 9 10 K Ohms Thermistor Output Curve Thermostat Output Curve Resistance (Ohms) Typical 10,000 Ohm Thermistor Output Curve Resistance (Ohms) Typical 10,000 Ohm Thermistor Output Curve Page I/O Zone 583 Controller Specifications I/O Zone 583 Controller Specifications OUTPUT ASSIGNMENTS - ANALOG RNET MRT-Pro or Room Air sensor OUTPUT ASSIGNMENTS - DIGITAL INPUT ASSIGNMENTS - UNIVERSAL