Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board; Outdor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board - Daikin VRV K Manual

SI-95.BOOK Page 119 Friday, March 31, 2000 10:59 AM
Si-95
4.5 Outdoor Unit: Malfunction of Transmission between Inverter and Control PC
Board
L L L L C C C C
Remote Controller
Display
I Malfunction of connection between the inverter unit and outdoor unit PC board
Supposed Causes
I Defect of outdoor unit PC board (transmission section)
I Defect of inverter unit
I Defect of noise filter (Z1F)
Troubleshooting
Troubleshooting Inverter K Series
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
Replace the inverter unit.
Check
the noise filter (Z1F)
for disconnection, and check
the power supply wiring
or the inverter unit.
Troubleshooting (Inverter)
Connect transmission wiring and turn
on again.
Fix the disconnection and turn on
again.
Defect of outdoor PC board or defect of
inverter unit
"LC" blinks again. Replace the outdoor unit PC board.
(VF067)
119