SiUS281117
Troubleshooting by Remote Controller
156
Service Diagnosis
Troubleshooting
Note:
1: A (Electronic thermal detection value)
The
secondary
current of the inverter
is higher than A (
∗
1) for
each phase.
Compressor
inspection. The
compressor
'
s coil is
disconnected.
Inverter
output voltage
check. Inverter
output voltage is not
balanced (Normal if within
±
5V). Must be
measured when
frequency is
stable.
After
turning ON again, "
L8
"
blinks again.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Output current check
Caution
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 outdoor unit PCB
(A1P).
Reset and restart.
Replace the compressor.
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
YES
NO
YES
NO
NO
YES
NO
YES
Model
Mode
Detection value
RZQ18,24 P(9)
RZQ30P
RZR18,24,30P
Cooling
A × seconds 14.8A × 260s or 17.0A × 5s
RZQ36,42P9
RZR36,48P
Cooling
A × seconds 24.9A × 260s or 31.0A × 5s