Outdoor Unit Control Pcb - Panasonic U-72MF2U9 Service Manual

1. Outdoor Unit Control PCB

15. Outdoor Unit Control PCB

15-1. Outdoor Unit Control PCB CR-72MF2U9 / A748186
(U-72MF2U9 / U-96MF2U9)
Terminal pin
( CN67 )
RC1 plug
( CN75 )
OC plug
( CN76 )
RC plug
( CN73 )
EMG plug
( CN69 )
HIC4 ( CN19 )
HIC2 ( CN10 )
HIC1 ( CN7 )
Comp. discharge 1
sensor
DISCH1 ( CN55 )
Gas temp.
sensor at
Suction gas temp.
heat exchanger 1, 2
SCG ( CN77 )
EXG1,2 ( CN61 )
HIC3 ( CN43 )
Oil detection
Outdoor air temp.
sensor
TO(CN53)
OIL1,2 ( CN54 )
Liquid temp.sensor
Suction temp.
at heat exchanger 1, 2
SCT ( CN65 )
EXL1,2 ( CN60 )
1 - 49
PCB and Functions
3WAY VRF SYSTEM
Control Functions
Low-pressure
SW2
sensor
SW1
LPS ( CN49 )
High-pressure
sensor
HPS ( CN46 )
Alarm LED
( LED1 )
1
Alarm LED
( LED2 )
2
SW5
EEPROM
3
LED ( LED3 )
SW6
EEPROM
4
memory IC
( IC14 )
SW7
SW4
TEST ( CN22 ) pin
5
CHK ( CN23 ) pin
AP ( CN24 ) pin
SW3
Snow sensor
( CN34 )
6
DEF(CN25) pin
RUN ( CN27 ) pin
SILENT ( CN33 )
STOP ( CN28 ) pin
7
A. ADD
( CN30 ) pin
MODE
( CN40 ) pin
8
9