L8" Outdoor Unit: Inverter Current Abnormal; Inverter Current Abnormal - Daikin VRV II RXYQ8MY1K Service Manual

Troubleshooting by Indication on the Remote Controller
3.34 " L8 " Outdoor Unit:
L8
Remote
Controller
Display
Applicable RXYQ8~30MY1K (E), YLK (E)
Models
Method of Malfunction is detected by current flowing in the power transistor.
Malfunction
Detection
Malfunction When overload in the compressor is detected. (Inverter secondary current 15.0A)
Decision
Conditions
Supposed
Causes
Troubleshooting
Output current check
190

Inverter Current Abnormal

Compressor overload
Compressor coil disconnected
Defect of inverter PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
The secondary
current of the inverter is
higher than 15A
for each phase.
NO
Compressor
inspection The
compressor's coil is
disconnected.
NO
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
Inverter
output
voltage check
Inverter output voltage
is not balanced.
(Normal if within ±10V)
Must be measured
when frequency
is stable.
YES
After turning
on again, "L8" blinks
again.
YES
YES
YES
NO
NO
Si39-502A
Compressor overload
Inspection of the compressor and
refrigerant system is required.
Replace the compressor.
Replace the inverter PC board.
Reset and restart.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
(V2813)
Troubleshooting