Indoor Service Manual

24 25
OCH669A
8-5. TEST POINT DIAGRAM
8-5-1. Indoor controller board
SLZ-KF09NA.TH SLZ-KF12NA.TH SLZ-KF15NA.TH SLZ-KF18NA.TH
CN22
Connect to the terminal block (TB5)
(Remote controller transmission line)
10.4–14.6 V DC
CN90
Connect to the wireless
remote controller board (CNB)
LED2
Power supply
(Wired remote controller)
CN44
Pipe temperature thermistor
– : Liquid (TH2)
– : Condenser/Evaporator (TH5)
CN20
Room temperature thermistor
(TH1)
CN4F
Drain float switch (FS)
CN105
IT
CN4Z
i-see Sensor (Sensor)
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)
– : 310 – 340 V DC
– : 15 V DC
CN5Y
i-see Sensor motor (MT)
12 V pulse output
CNV
Vane motor (MV)
12 V pulse output
J41, J42
Jumper wire
(Pair No. setting with
wireless remote controller)
SW2
Capacity setting
LED3
Communication
(Indoor-outdoor)
SWE
Jumper switch
(Emergency operation)
CN32
Remote switch
CN41
HA terminal-A
CN2L
Lossnay
CN01
Connect to the terminal block
(TB4)
(Indoor/outdoor connecting line)
– : 220–240 V AC
F1
FUSE
(6.3A/250V)
LED1
Power supply (I.B)
CN3C
Connect to the terminal block
(TB4)
(Indoor/outdoor connecting line)
0–24 V DC (Communication)
CN51
Centrally control
– : Control signal
13 V DC pulse input (
: +)
– : Operation indicator
13 V DC (
: +)
– : Malfunction indicator
13 V DC ( : +)
CNP
Drain pump (DP)
– : 13 V DC
CN24
Back-up heating
SW1
Model selection