SiE39-404 Troubleshooting by Indication on the Remote Controller
Troubleshooting 211
2.34 “L8” Outdoor Unit: Inverter Current Abnormal
Remote
Controller
Display
L8
Applicable
Models
RXYQ5~48M
Method of
Malfunction
Detection
Malfunction is detected by current flowing in the power transistor.
Malfunction
Decision
Conditions
When overload in the compressor is detected.
Supposed
Causes
Compressor overload
Compressor coil disconnected
Defect of inverter PC board
Troubleshooting Output current check
(V2813)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Caution
Inverter
output
voltage check
Inverter output voltage
is not balanced.
(Normal if within ±10V)
Must be measured
when frequency
isstable.
Compressor overload
Inspection of the compressor and
refrigerant system is required.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status
of the
compressor.
Replace the inverter PC board.
Reset and restart.
The secondary
current of the inverter is
higher than 15A
for each phase.
Replace the compressor.
Compressor
inspection The
compressor's coil is
disconnected.
Disconnect the the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
After turning
on again, "L8" blinks
a
gain.
NO
NO
NO
NO
YES
YES
YES
YES
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