Indoor Service Manual
Table Of Contents
- Cover
- Contents
- 1. SAFETY PRECAUTION
- 2. PART NAMES AND FUNCTIONS
- 3. SPECIFICATION
- 4. FAN PERFORMANCE AND CORRECTED AIR FLOW
- 5. SOUND PRESSURE LEVELS
- 6. OUTLINES & DIMENSIONS
- 7. WIRING DIAGRAM
- 8. REFRIGERANT SYSTEM DIAGRAM
- 9. HEATER CONTROL
- 10. HUMIDIFIER CONTROL
- 11. ERV (ENERGY RECOVERY VENTILATION) CONTROL
- 12. TROUBLESHOOTING
- 12-1. Cautions on troubleshooting
- 12-2. Self-check function
- 12-3. Self-diagnosis action table
- 12-4. Troubleshooting by inferior phenomena
- 12-5. Test point diagram
- 12-6. Trouble criterion of main parts
- 12-7. Thermistor
- 12-8. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD)
- 12-9. Functions of dip switch and jumper wire
- 13. DISASSEMBLY PROCEDURE
- Back Cover
Contents
1. SAFETY PRECAUTION ..................................................................................................................................................... 2
1-1. Always observe for safety ......................................................................................................................................... 2
1-2. Cautions related to new refrigerant ........................................................................................................................... 2
2. PART NAMES AND FUNCTIONS ...................................................................................................................................... 3
3. SPECIFICATION ................................................................................................................................................................4
4. FAN PERFORMANCE AND CORRECTED AIR FLOW ..................................................................................................... 7
PVA-A12AA7 .................................................................................................................................................................... 7
PVA-A18AA7 .................................................................................................................................................................... 8
PVA-A24AA7 .................................................................................................................................................................... 9
PVA-A30AA7 .................................................................................................................................................................. 10
PVA-A36AA7 .................................................................................................................................................................. 11
PVA-A42AA7 .................................................................................................................................................................. 12
PVA-A12, 18, 24, 30, 36, 42AA7 .................................................................................................................................... 13
Air Filter ................................................................................................................................................................13
5. SOUND PRESSURE LEVELS ......................................................................................................................................... 14
5-1. Sound pressure level .............................................................................................................................................. 14
5-2. NC curves ...............................................................................................................................................................14
6. OUTLINES & DIMENSIONS ............................................................................................................................................17
7. WIRING DIAGRAM ..........................................................................................................................................................19
PVA-A12, 18, 24, 30, 36, 42AA7 .................................................................................................................................... 19
8. REFRIGERANT SYSTEM DIAGRAM ..............................................................................................................................20
9. HEATER CONTROL .........................................................................................................................................................21
9-1. Control Specications And Function Setting ........................................................................................................... 21
9-2. Fan control ..............................................................................................................................................................23
9-3. CN24RELAY-KIT-CM3 (Optional Parts) installation ................................................................................................ 24
10. HUMIDIFIER CONTROL ................................................................................................................................................ 26
10-1. Control Specications ........................................................................................................................................... 26
10-2. Installation ............................................................................................................................................................. 26
11. ERV (ENERGY RECOVERY VENTILATION) CONTROL .............................................................................................. 27
11-1. Control Specications ............................................................................................................................................27
11-2. Installation .............................................................................................................................................................27
12. TROUBLESHOOTING ...................................................................................................................................................28
12-1. Cautions on troubleshooting ................................................................................................................................. 28
12-2. Self-check function ................................................................................................................................................29
12-3. Self-diagnosis action table .................................................................................................................................... 31
12-4. Troubleshooting by inferior phenomena ............................................................................................................... 35
12-5. Test point diagram .................................................................................................................................................36
12-6. Trouble criterion of main parts...............................................................................................................................38
12-7. Thermistor ............................................................................................................................................................. 38
12-8. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD) ....................................................................... 39
12-9. Functions of dip switch and jumper wire ............................................................................................................... 40
13. DISASSEMBLY PROCEDURE ...................................................................................................................................... 41
13-1. Control box ............................................................................................................................................................41
13-2. Thermistor (Return Air) .......................................................................................................................................... 42
13-3. Coil Assembly........................................................................................................................................................ 43
13-4. Blower/Fan Assembly............................................................................................................................................ 45