Contents
1. SAFETY PRECAUTION ..................................................................................................................................................... 2
1-1. Always observe for safety ......................................................................................................................................... 2
2. PART NAMES AND FUNCTIONS ...................................................................................................................................... 3
3. SPECIFICATION ................................................................................................................................................................ 4
MVZ-A12AA7 ................................................................................................................................................................... 6
MVZ-A18AA7 ................................................................................................................................................................... 7
MVZ-A24AA7 ................................................................................................................................................................... 8
MVZ-A30AA7 ................................................................................................................................................................... 9
MVZ-A36AA7 ................................................................................................................................................................. 10
MVZ-A12, 18, 24, 30, 36AA7 ......................................................................................................................................... 11
5. SOUND PRESSURE LEVELS ......................................................................................................................................... 12
5-1. Sound pressure level .............................................................................................................................................. 12
5-2. NC curves ............................................................................................................................................................... 12
6. OUTLINES & DIMENSIONS ............................................................................................................................................ 15
7. WIRING DIAGRAM .......................................................................................................................................................... 17
8. REFRIGERANT SYSTEM DIAGRAM .............................................................................................................................. 18
9. HEATER CONTROL ......................................................................................................................................................... 19
9-2. Fan control .............................................................................................................................................................. 21
10. HUMIDIFIER CONTROL ................................................................................................................................................ 24
10-2. Installation ............................................................................................................................................................. 24
12. TROUBLESHOOTING ................................................................................................................................................... 26
12-1. Cautions on troubleshooting ................................................................................................................................. 26
12-2. Self-check function ................................................................................................................................................ 27
12-3. Self-diagnosis action table .................................................................................................................................... 29
12-5. Test point diagram ................................................................................................................................................. 34
12-7. Thermistor ............................................................................................................................................................. 36
13. DISASSEMBLY PROCEDURE ...................................................................................................................................... 39
13-1. Control box ............................................................................................................................................................ 39
13-2. Thermistor (Return Air) .......................................................................................................................................... 40
13-3. Coil Assembly........................................................................................................................................................ 41
13-4. Blower/Fan Assembly............................................................................................................................................ 43
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