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
Specications are subject to change without notice. © 2016 Mitsubishi Electric US, Inc.
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12-5-2. Indoor controller board
SWE Emergency oper ation
SW1 Model selection
SW2 Capacity setting
CN105 Radio frequency interf ace
CN32 Remote star t/stop adapter
CN22 F
or MA remote controller cab le con-
nection
(10 - 13 VDC)
CN51 Centr alized control
CN41 J AMA standard HA ter minal A
CN44 Ther mistor
(liquid/condenser/e vaporator
temperature)
CN4F Float sensor
CN20 Ther mistor (Inlet temper ature)
CN24-1
1st Heater control (12VDC)
CN24-2
2nd Heater control
CN4Y For fan control
CN3C Indoor-outdoor transmission
(0 - 24VDC)
CN90 Wireless remote controller
CNXA2
Connect to the indoor controller board
CNXB2
Connect to the indoor controller board
CNX
C2
Connect to the indoor controller board
CNXA1
Connect to the indoor po wer board
CNXB1
Connect to the indoor po wer board
CNXC1
Connect to the indoor po wer board
CNER
ER V controll
CN2C
ER V input
CN25
Humidity conrol
CNF
Humidity input
CN22CN105
CN41
CN25
CNER
CN24-1
CN32
SW1
SW2
SWE
CN51
CN2C
CN24-2
CN3C
CN90
CNF
CN4Y
CN44
CN4F
CN20
CNXB2
CNXC2
CNXA2
PVA-A12AA7 PVA-A30AA7
PVA-A18AA7 PVA-A36AA7
PVA-A24AA7 PVA-A42AA7