Outdoor Unit Control Pcb Cr-144Mf2U9 / A748187 - Panasonic U-72MF2U9 Technical Data Manual

1. Outdoor Unit Control PCB
1. Outdoor Unit Control PCB

1-2. Outdoor Unit Control PCB CR-144MF2U9 / A748187

( U-120MF2U9 / U-144MF2U9 )
Terminal pin
( CN67 )
RC1 plug
( CN75 )
OC plug
( CN76 )
RC plug
( CN73 )
EMG plug
( CN69 )
EEPROM
LED ( LED3 )
EEPROM
memory IC
( IC14 )
HIC8 ( CN85 )
HIC6 ( CN82 )
HIC5 ( CN80 )
HIC4 ( CN19 )
HIC2 ( CN10 )
HIC1 ( CN7 )
Comp. discharge 1
sensor
DISCH1 ( CN55 )
Suction gas temp.
SCG ( CN77 )
HIC7 ( CN78 ) HIC3 ( CN43 )
Comp. discharge 2
Outdoor air temp.
sensor
TO(CN53)
DISCH2 ( CN56 )
Gas temp.sensor
at heat exchanger 1, 2
EXG1,2 ( CN61 )
Liquid temp.sensor
Suction temp.
at heat exchanger 1, 2
SCT ( CN65 )
EXL1,2 ( CN60 )
7 - 3
PCB and Functions
PCB and Functions
Alarm LED
( LED1 )
Alarm LED
( LED2 )
SW5
SW6
SW7
SW4
SW3
SW2
SW1
Low-pressure
sensor
LPS ( CN49 )
Snow sensor
( CN34 )
SILENT ( CN33 )
RUN ( CN27 ) pin
TEST ( CN22 ) pin
CHK ( CN23 ) pin
STOP ( CN28 ) pin
AP ( CN24 ) pin
A. ADD
( CN30 ) pin
DEF ( CN25 ) pin
High-pressure
sensor MODE
HPS ( CN46 )
( CN40 ) pin
Oil detection sensor
OIL1,2 ( CN54 )
1
2
3
4
5
6
7
8
9