Mitsubishi Electric PAA-A18AA1 Manual De Mantenimiento página 2

Table of Contents
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1 and all-
1. Safety precautions .................................................................................................................. 4
1.1. Before service and electric work .................................................................................... 4
1.2. Devices that use R410A refrigerant .............................................................................. 12
1.3. Before getting started .................................................................................................. 13
1.4. Before servicing or moving PAA unit - electrical work ..................................................... 18
1.5. Before starting the test run ........................................................................................... 20
1.6. To dispose of the PAA unit ........................................................................................... 21
2. Installation position and corresponding airflow direction ............................................................ 22
3. Specifications ........................................................................................................................ 23
4. Internal pressure drop ............................................................................................................ 24
5. Outlines and dimensions ........................................................................................................ 27
5.1. Maintenance access to clean coil slabs ........................................................................ 29
6. Wiring diagram ...................................................................................................................... 30
7. Refrigerant system diagram .................................................................................................... 31
8. Furnace control ...................................................................................................................... 32
9. Test mode and emergency mode ............................................................................................ 34
10. Humidifier ............................................................................................................................ 38
11. Energy recovery ventilation (ERV) ......................................................................................... 40
12. HRV/ERV heating operation for MXZ system ......................................................................... 41
13. Troubleshooting ................................................................................................................... 42
13.1. Cautions on troubleshooting ....................................................................................... 42
13.2. Self check ................................................................................................................. 42
13.3. Self-diagnosis action table ......................................................................................... 46
13.4. Troubleshooting by inferior phenomena ...................................................................... 50
13.5. Test point diagram ..................................................................................................... 51
13.5.1. Power supply board ........................................................................................ 51
13.5.2. Indoor controller board .................................................................................... 52
13.6. Trouble criterion of main parts .................................................................................... 53
13.7. Thermistor ................................................................................................................ 54
14. Functions of dip switch and jumper wire ................................................................................. 55
15. Disassembly procedure ........................................................................................................ 56
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1 et tous les
1. Précautions de sécurité .......................................................................................................... 62
1.1. Avant d'assurer l'entretien et les travaux électriques ...................................................... 62
1.2. Dispositifs qui utilisent du frigorigène R410A ................................................................. 70
1.3. Avant de commencer ................................................................................................... 71
1.4. Avant d'assurer l'entretien de l'unité PAA ou de la déplacer - Travaux électriques ............ 76
1.5. Avant de commencer le test ......................................................................................... 78
1.6. Pour éliminer l'unité PAA ............................................................................................. 79
2. Emplacements d'installation et direction correspondante d'écoulement d'air .............................. 80
3. Spécifications ........................................................................................................................ 81
4. Chute de la pression interne ................................................................................................... 82
5. Aperçus et dimensions ........................................................................................................... 85
5.1. Accès d'entretien pour nettoyer les dalles de bobine ...................................................... 87
6. Schéma de câblage ............................................................................................................... 88
7. Schéma du circuit du frigorigène ............................................................................................. 89
8. Commande de la fournaise ..................................................................................................... 90
9. Mode test et mode d'urgence .................................................................................................. 93
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1 and all-
................................................................................. 4
........................................................................... 62
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