Mitsubishi Electric SLZ Series Technical & Service Manual page 22

8-5. TEST POINT DIAGRAM
8-5-1. Indoor controller board
SLZ-KF09NA1 SLZ-KF12NA1 SLZ-KF15NA1 SLZ-KF18NA1
LED2
Power supply
(Wired remote controller)
CNV
Vane motor (MV)
12 V pulse output
CN5Y
i-see Sensor motor (MT)
12 V pulse output
CN51
Centrally control
– : Control signal
13 V DC pulse input ( : +)
– : Operation indicator
13 V DC ( : +)
– : Malfunction indicator
13 V DC ( : +)
CN41
HA terminal-A
CN2L
Lossnay
CN105
IT
CN20
Room temperature thermistor
(TH1)
CN44
Pipe temperature thermistor
– : Liquid (TH2)
– : Condenser/Evaporator (TH5)
CN4F
Drain float switch (FS)
CNP
Drain pump (DP)
– : 13 V DC
Vsp
Voltage between pins of C626
0 V DC (FAN stop)
1–6.5 V DC (FAN operation)
(Same as 6(+)–4(−) of CNMF)
CNMF
Fan motor (MF)
– : 294-325 V DC
– : 15 V DC
TCH118
CN90
CN4Z
Connect to the wireless
i-see Sensor (Sensor)
remote controller board (CNB)
22
CN22
Connect to the terminal black (TB5)
(Remote controller transmission line)
SW1
Model selection
J41, J42
Jumper wire
(Pair No. setting with
wireless remote controller)
SW2
Capacity setting
LED3
Communication
(Indoor-outdoor)
SWE
Jumper switch
(Emergency operation)
CN28
Time saving
CN32
Remote switch
CN4G
Connect to the auto grille controller
board (CN4G)
– : 13 V DC ( : +)
– , – : communication
line 0–5 V DC ( , : +)
CN24
Back-up heating
LED1
Power supply (I.B)
CN3C
Connect to the terminal block
(TB4)
(Indoor/outdoor connecting line)
0–28 V DC (Communication)
CN01
Connect to the terminal block
(TB4)
(Indoor/outdoor connecting line)
– : 208-230 V AC
F1
FUSE
(6.3A/250 V)