SiE-05C Troubleshooting (Inverter)
Troubleshooting Inverter K Series 165
5.5 Outdor Unit: Malfunction of Transmission between Inverter and Control PC
Board
Remote Controller
Display
LL
LL
CC
CC
Supposed Causes Malfunction of connection between the inverter unit and outdoor unit PC board
Defect of outdoor unit PC board (transmission section)
Defect of inverter unit
Defect of noise filter (NF1)
Troubleshooting
(VF067)
The
transmission
wiring between the
outdoor unit PC board and
inverter unit is
disconnected.
YES
Fix the disconnection and turn on
again.
Connect transmission wiring and turn
on again.
NO
YES
The
microcomputer
monitor (green) on
the inverter unit
is blinking.
Check
the noise filter (NF1)
for disconnection, and check
the power supply wiring
or the inverter unit.
The voltage
between red and
white of CN on the inverter
unit is 220 ~ 240 V (50Hz),
220 V (60Hz).
NO
Defect of outdoor PC board or defect of
inverter unit
YES
Replace the inverter unit.
"LC" blinks again.
NO
Replace the outdoor unit PC board.
YES
NO
Are X3A
on the outdoor unit PC
board and X3A on the inverter
unit connected
securely.
SI-05C.BOOK Page 165 Monday, November 6, 2000 4:13 PM
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