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

[ IX TROUBLESHOOTING ]

5. Test point diagram

Indoor controller board
LED3
CN90
SWE
CN105
CN44
CN20
CNSA
LED1
PC626
CNMF
HWE1909A
CN01 Power supply voltage (220 - 240VAC)
SWE Emergency operation
CN2L
J41, J42 Pair No. setting for wireless remote controller
SW2 Capacity setting
CN22 For MA remote controller cable connection
SW2
(10.4 - 14.6 VDC (Between 1 and 3.))
J41
CN51 Centralized control
J42
CN41 JEMA standard HA terminal A
CN44 Thermistor
(liquid/condenser/evaporator temperature)
CN51
CN20 Thermistor (Inlet temperature)
CN3C Indoor-outdoor transmission
(0 - 24VDC)
CN41
CNSA R32 sensor
LED2 CNMF Fan motor output
1 - 4: 310 - 340 VDC
5 - 4: 15 VDC
6 - 4: 0 - 6.5 VDC
CN22
7 - 4: Stop 0 or 15 VDC
CN3C
CN2L LOSSNAY
CN90 Wireless remote controller
(*1)
V V Voltage between the C626 pins 0VDC
sp
(with the fan stopped)
1 - 6.5VDC (with the fan in operation)
(Same with the voltage between 6 (+)
and 4 (-) of CNMF)
CN01
FUSE (6.3A 250V)
- 41 -
Run 7.5 VDC
(0 - 15 pulse)
GB