31
10-3. TEST POINT DIAGRAM
10-3-1. Indoor controller board
PLFY-P12/15/18/24/30/36NBMU-E PLFY-P12/15/18/24/30/36NBMU-ER1
PLFY-P12/15/18/24/30/36NBMU-ER2
CN51
Centrally control
1
-
2
: Control signal
12VDC pulse input (
1
: +)
3
-
4
: Operation indicator
12VDC (
3
: +)
3
-
5
: Malfunction indicator
12VDC (
3
: +)
CN4Y
i-See sensor
CN60
Linear expansion valve (LEV)
output 12VDC pulse output
CN44
Pipe temperature thermistor
1
-
2
: Liquid (TH22)
3
-
4
: Gas (TH23)
CN4F
Drain float switch (FS)
CN20
Room temperature
thermistor (TH21)
CN27
Damper signal output
12VDC(
1
: +)
CN90
Connect to the wireless
remote controller board
(W.B)
LED1
Main power supply
(Indoor unit : 208-230V)
CNMF
Connect to the
fan motor (MF)
1
-
4
: DC310~340V
5
-
4
: DC15V
6
-
4
: DC0~6V
7
-
4
: DC0 or DC15V (Stop)
DC7.5V (Operation)
(12VDC pulse)
CNP
Drain pump output (DP)
1
-
3
: 208-230VAC
CN2M
Connect to the terminal block (TB5)
(M-NET transmission connecting wire)
24-30VDC (non-polar)
CN3A
Connect to the terminal block (TB15)
(MA-Remote controller connecting wire)
1
-
3
: 8.7-13V DC (Pin
1
(+))
LED2
Power supply for
MA-Remote controller
CN32
Remote switch
SW4
Model selection
SW3
Function setting
SW2
Capacity setting
CN6Y
i-see sensor motor output
12VDC pulse output
FUSE
6.3A 250V
SWE
Test run (Drain pump)
Jumper wire J41, J42
Pair No. setting for wireless
remote controller
CND
Power supply for indoor controller board
3
-
5
: 208-230VAC
CNV
Vane motor output
12VDC pulse
CN52
Remote indicator
1
-
2
: Status lamp 12VDC (
1
: +)
Fan motor output (SW1-5 OFF)
Thermostat ON (SW1-5 ON)
1
-
3
: Cooling/Dry status lamp
12VDC (
1
: +)
1
-
4
: Heating status lamp
12VDC (
1
: +)
CN24
External heater
12VDC (
1
: +)
*except PLFY-P
•
NBMU-E
OCH421B
