Mitsubishi Electric PKA-A18HA6 Service Manual page 27

9-7. TEST POINT DIAGRAM
Indoor controller board
PKA-A12HA6 PKA-A18HA6
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)
OCH580
CN20 CN2L
Room temp.
Connector
thermistor (TH1)
(LOSSNAY)
SWE2
Emergency
operation switch
CN41
Connector
(HA terminal-A)
IR wireless remote controller board
27
CNMF
Connect to the
fan motor (MF)
1–3: 294–325 V DC
4–3: 15 V DC
5–3: 0–6.5 V DC
6–3: 0 or 15 V DC
CN01
Connect to the
Terminal block (TB4)
1–3: 208/230 V AC
FUSE
(3.15 A, 250 V)
{
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
13 V DC pulse input (1: +)
3–4: Operation indicator
13 V DC (3: +)
3–5: Malfunction indicator
13 V DC (3: +)