Outdoor Unit: Inverter Instantaneous Over-Current - Panasonic Urban Multi MX1R Series Service Manual

Troubleshooting (Inverter)
5.2 Outdoor Unit:
L5
Remote Controller
Display
„ Defect of compressor coil (disconnected, defective insulation)
Supposed Causes
„ Compressor start-up malfunction (mechanical lock)
„ Defect of inverter unit
Troubleshooting
Compressor inspection
536
Inverter Instantaneous Over-Current
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
The compressor's
coil is disconnected or the
insulation is
defective.
NO
Disconnect the connection
between the compressor and
inverter.
Inverter
output voltage
check
Inverter output voltage
is not balanced.
(Normal if within ±8V)
(Note) Must be
measured when
frequency
is stable.
NO
There is
instantaneous power
drop.
NO
YES
YES
YES
Troubleshooting UM Combination "MA1R Series" Using R-407C
PACD011001C2
Replace the compressor.
Replace the inverter unit.
Correct power supply.
Compressor inspection.
Inspect according to the diagnosis
procedure for odd noises, vibration and
operating status of the compressor.
(VF064)