Troubleshooting by Indication on the Remote Controller ESIE09-08B
184 Troubleshooting
3.43 “L8 ” Outdoor Unit: Inverter Current Abnormal
Remote Control
Display
L8
Applicable
Models
ER*Q 011~016*
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 outdoor unit PC board (A2P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
(V3184)
Output current check
Inverter
output voltage
check Inverter output
voltage is not balanced
(Normal if within ±5V). Must
be measured
when
frequency
is stable.
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.
NO
Replace the inverter PC board assy
(A2P).
YES
NO
Reset and restart.
NO
The
secondary current
of the inverter is higher
than 13.1A, 260 sec. for
each phase.
Replace the compressor.
NO
YES
Compressor
inspection The
compressor's coil is
disconnected.
YES
YES
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
After
turning on again,
"L8" blinks again.
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