Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board - Panasonic Urban Multi MX1R Series Service Manual

Troubleshooting (Inverter)
5.5 Outdoor Unit:
Board
LC LC LC LC
Remote Controller
Display
„ Malfunction of connection between the inverter unit and outdoor unit PC board
Supposed Causes
„ Defect of outdoor unit PC board (transmission section)
„ Defect of inverter unit
„ Defect of noise filter (Z1F)
Troubleshooting
198
Malfunction of Transmission between Inverter and Control PC
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Are X3A
on the outdoor unit PC
NO
board and X3A on the inverter
unit connected
securely.
YES
The
transmission
wiring between the
YES
outdoor unit PC board and
inverter unit is
disconnected.
NO
The
microcomputer
YES
monitor (green) on
the inverter unit
is blinking.
NO
The voltage
between red and
YES
white of CN on the inverter
unit is 220 ~ 240 V (50Hz),
220 V (60Hz).
NO
Troubleshooting Urban Multi "MX1, ME1 Series" Using R-22
PACD011001C2
Connect transmission wiring and turn
on again.
Fix the disconnection and turn on
again.
Defect of outdoor PC board or defect of
inverter unit
Replace the inverter unit.
When the "LC" malfunction occur again
replace the outdoor unit PC board.
Check the noise filter (Z1F) for
disconnection, and check the power
supply wiring or the inverter unit.
(VF067)