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Trane Direct-Fired Indoor and Outdoor Make-Up Air Units, MUA-SVP01A-EN FAULT CODE: Burner Hand

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MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 31

Diagnostics

–No. Continue.

2. Is the burner enable relay energized?

–No. There is an open in the 24VAC circuit. Determine cause and rectify.

–Yes . Continue.

3. Is the burner enable relay's normally open contact closed?

–No. Replace relay.

–Yes . Continue.

4. Is there a pilot flame present?

–No. Refer to the Installation, Operation and Maintenance Manual for

guidance in troubleshooting the flame relay or ignition module.

–Yes . Continue.

5. Is the flame relay or ignition module main valve terminal energized?

–No. Refer to the Installation, Operation and Maintenance Manual for

guidance in troubleshooting the flame relay or ignition module.

–Yes . Continue.

6. Is the gas valve/burner status relay energized?

–No. There is an open in the main valve control circuit. Determine cause

and rectify.

–Yes . Continue.

7. Is the gas valve/burner status relay's normally open contact closed?

–No. Replace relay.

–Yes . Continue.

8. Is there continuity at the controller between the burner status terminals?

–No. There is an open in the wiring between these terminals. Determine

cause and rectify.

–Yes . Replace controller.

FAULT CODE: Burner Hand

PROBLEM: The controller has not activated the burner enable output, but

the burner status input is receiving a signal that the burner is on.

SOLUTION:Inspect burner control circuit. This fault has the potential to

be a very serious problem. Close the manual gas valves immediately if

the fan is not running.

1. Is the controller's burner enable output LED lit?

–Yes . Close manual gas valves. There is a problem with the controller

program. Contact factory.

–No. Continue.

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