L8" Outdoor Unit: Inverter Current Abnormal - Daikin VRVIII-S Service Manual

Troubleshooting by Indication on the remote control
3.33 "L8 " Outdoor Unit: Inverter Current Abnormal
L8
remote control
Display
Applicable
RXYSQ4~6P
Models
Method of
Malfunction is detected by current flowing in the power transistor.
Malfunction
Detection
Malfunction
When overload in the compressor is detected.
Decision
Conditions
Supposed ! Compressor overload
Causes ! Compressor coil disconnected
! Defect of outdoor unit PC board (A2P)
Troubleshooting
160
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Output current check
The
secondary current
of the inverter is higher than
13.1A, 260 sec. for each
phase.
NO
Compressor
inspection The
compressor's coil is
disconnected.
NO
Disconnect the 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 ±5V).
Must be measured when
frequency is stable.
YES
After turning on
again, "L8" blinks
again.
YES
YES
YES
NO
NO
SiENBE34-703
Compressor overload
Inspection of the compressor and
refrigerant system is required.
Replace the compressor.
Replace the inverter PC board
assy (A2P).
Reset and restart.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
(V3184)
Troubleshooting