Table Of Contents - Mitsubishi Electric TRANE NTXAMT12A112AA Service Manual

Table of Contents

1. SAFETY PRECAUTION .......................................................................................................... 4
1.1. Always observe for safety ............................................................................................. 4
1.2. Cautions related to new refrigerant ................................................................................ 4
2. PART NAMES AND FUNCTIONS ............................................................................................ 7
3. SPECIFICATION ..................................................................................................................... 8
4. FAN PERFORMANCE AND CORRECTED AIRFLOW ............................................................. 10
4.1. NTXAMT12A112AA ..................................................................................................... 10
4.2. NTXAMT18A112AA ..................................................................................................... 12
4.3. NTXAMT24A112AA ..................................................................................................... 14
4.4. NTXAMT30A112AA ..................................................................................................... 16
4.5. NTXAMT36A112AA ..................................................................................................... 18
5. SOUND PRESSURE LEVELS ................................................................................................ 20
5.1. Sound pressure level ................................................................................................... 20
5.2. NC Curves .................................................................................................................. 21
5.2.1. NTXAMT12A112AA .......................................................................................... 21
5.2.2. NTXAMT18A112AA .......................................................................................... 22
5.2.3. NTXAMT24A112AA .......................................................................................... 23
5.2.4. NTXAMT30A112AA .......................................................................................... 24
5.2.5. NTXAMT36A112AA .......................................................................................... 25
5.2.6. Air Filter ........................................................................................................... 26
6. OUTLINES & DIMENSIONS ................................................................................................... 27
7. WIRING DIAGRAM ................................................................................................................ 28
8. REFRIGERANT SYSTEM DIAGRAM ...................................................................................... 29
9. HEATER CONTROL .............................................................................................................. 30
9.1. Control Specifications And Function Setting .................................................................. 30
9.2. Fan control ................................................................................................................. 33
9.3. CN24RELAY-KIT-CM3 (Optional Parts) installation ........................................................ 34
10. HUMIDIFIER CONTROL SPECIFICATIONS .......................................................................... 36
10.1. Humidistat Control ..................................................................................................... 36
10.2. Installation ................................................................................................................ 37
11. ERV (ENERGY RECOVERY VENTILATION) CONTROL ........................................................ 38
11.1. ERV Control .............................................................................................................. 38
11.2. Installation ................................................................................................................. 39
12. TROUBLESHOOTING ......................................................................................................... 40
12.1. Cautions on troubleshooting ....................................................................................... 40
12.2. Self-check function, Function Table ............................................................................. 41
12.3. Self-diagnosis action table ......................................................................................... 45
12.4. Troubleshooting by inferior phenomena ...................................................................... 50
12.5. Test point diagram ..................................................................................................... 51
12.5.1. Power supply board ........................................................................................ 51
12.5.2. Indoor controller board .................................................................................... 52
12.6. Trouble criterion of main parts .................................................................................... 53
12.7. Thermistor ................................................................................................................ 54
12.8. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD) .................................. 55
12.9. Functions of DIP switch and jumper wire ..................................................................... 56
13. DISASSEMBLY PROCEDURE .............................................................................................. 57
13.1. Control box ............................................................................................................... 57
13.2. Thermistor (Return Air) .............................................................................................. 58
13.3. Coil Assembly ........................................................................................................... 59
Specifications are subject to change without notice.
NTXAMT12, 18, 24, 30, 36A112AA
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