Test Point Diagram - Mitsubishi Electric Mr. SLIM SEZ Series Technical & Service Manual

[ VII TROUBLESHOOTING ]

6. TEST POINT DIAGRAM

6-1. Indoor controller board
SEZ-M25DA(L)2
SEZ-M35DA(L)2
SEZ-M50DA(L)2
SEZ-M60DA(L)2
SEZ-M71DA(L)2
LED3
CN90
SWE
CN105
CN4F
CN44
CN20
LED1
PC626
CNMF
CNP
HWE2101A
CN01 Power supply voltage (220 - 240 VAC)
SWE
CN2L
J41, J42 Pair No. setting for wireless remote
SW2
SW2
CN22 For MA remote controller cable
J41
J42
CN51 Centralized control
CN41 JEMA standard HA terminal A
CN51
CN4F Float switch
CN44 Thermistor
CN41
LED2
CN20 Thermistor (Inlet temperature)
CN3C Indoor-outdoor transmission
CN22
CNMF Fan motor output
CN3C
CNP
CN2L LOSSNAY
CN90 Wireless remote controller
(*1)
Vsp
CN01
FUSE (6.3A 250V)
- 41 -
Emergency operation
controller
Capacity setting
connection
(10.4 - 14.6 VDC (Between 1 and 3.))
(liquid/condenser/evaporator
temperature)
(0 - 24 VDC)
1 - 4: 310 - 340 VDC
5 - 4: 15 VDC
6 - 4: 0 - 6.5 VDC
7 - 4: Stop 0 or 15 VDC
Run 7.5 VDC
(0 - 15 pulse)
Drain-up mechanism output
(200 VAC)
Voltage between the C626 pins
0 VDC (with the fan stopped)
1 - 6.5 VDC (with the fan in operation)
(Same with the voltage between 6 (+)
and 4 (-) of CNMF)
GB