Cr1 (For Cr-Kr254Gxh56A/S-18Mk1U6~S-24Mk1U6) (Wall-Mounted) - Panasonic U-72MF1U9 Service Manual

2. Indoor Unit Control PCB

2-5. CR1 (for CR-KR254GXH56A/S-18MK1U6~S-24MK1U6) (Wall-Mounted)

If the fuse (F002) has
blown, determine the
cause and correct it.
Then change the socket
from the OC plug to the
EMG plug.
Control circuit fuse
(F002)
EMG plug
OC plug
RC plug
Microcomputer
JP001
Nonvolatile memory IC
Indoor heat exchanger
(E2) sensor
Indoor heat exchanger
(E1) sensor
CHK (test) pin
DISP pin
EXCT plug
Room temperature
(TA) sensor
4 - 11
PCB and Functions
TRANS-S plug
FAN DRIVE plug
OPTION plug
T10 plug
Power LED
(LD002)
1
2
3
4
5
6
7