Error Comunication Between Ctrl. Pcb And Fan Speed Ctrl. Pcb - Hitachi RCUE40AG1-400AG1 Service Manual

[]~[] Error comunication between Ctrl. PCB and Fan speed Ctrl. PCB
!
This alarm code is indicated when the transmission signal is missing more than 5 seconds.
Is connector CN14A on the
printed circuit board for CPU
(PCB ) correctly connected?
C
Is connector on the printed
circuit board for Fan speed
control (PCB
Check the Printed circuit board
for Fan speed control (PCB
Replace the printed circuit
board for CPU (PCB
No
Yes
No
) correctly
E
connected
Yes
Abnormal
)
E
Normal
)
C
TROUBLESHOOTING
Plug correctly and
repair wiring
Plug correctly and
repair wiring
Replace the printed
circuit board for
Fan Speed (PCB )
E
1
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