Mitsubishi Electric Mr.SLIM PKA-A12HA4 Service Manual page 24

9-7. TEST POINT DIAGRAM
Indoor controller board
PKA-A12HA4 PKA-A18HA4
CN105
RFI
(Radio frequency interface)
SWE
Emergency
operation connector
SW1
Model selection
SW2
Capacity setting
CN151
Connect to the
vane motor (MV)
Jumper wire J41,J42
Pair No. setting for
IR wireless remote
controller
CN152
Connector
(Back-up heating)
CN44
Pipe temperature thermistor
1-2 : Liquid (TH2)
3-4 : Condenser/Evaporator
(TH5)
CN20 CN2L
Room temp.
Connector
thermistor (TH1)
(LOSSNAY)
SWE2
Emergency
operation switch
CNMF
Connect to the
fan motor (MF)
1-3 : DC294~325V
4-3 : DC15V
5-3 : DC0~6.5V
6-3 : DC0 or DC15V
CN41
Connector
(HA terminal-A)
IR wireless remote controller board
24
CN01
Connect to the
Terminal block (TB4)
1-3 : 208/230VAC
FUSE
(3.15A 250V)
{
LED1:Power supply (I.B)
LED2:Power supply (R.B)
LED3:Transmission
(Indoor/outdodr)
CN3C
Transmission
(Indoor/outdodr)
(DC 0~24V)
CN22
Connect to the terminal
block (TB5) (Remote
controller connecting
wire)
CN30
Connector (LLC)
CN32
Remote switch
CN90
Connect to the remote
operation adapter
CN51
Centrally control
1-2 : Control signal
13VDC pulse input (1: +)
3-4 : Operation indicator
13VDC (3: +)
3-5 : Malfunction indicator
13VDC (3: +)