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SiUS39-602
Troubleshooting by Indication on the Remote Controller
Troubleshooting
167
2.36
“
L8
”
Outdoor Unit:
Inverter Current Abnormal
Remote Controller
Display
L8
Applicable Models
REYQ72M, 96M
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
Refer check 13 to P.213.
(V2813)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Inverter
output
voltage check
Inverter output voltage
is not balanced.
(Normal if within
±
10V)
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.
YES
NO
Reset and restart.
NO
The secondary
current of the inverter is
higher than 26.1A
for each phase.
Replace the compressor.
NO
YES
Compressor
inspection The
compressor's coil is
disconnected.
YES
YES
Check No. 13
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
again.
Summary of Contents for REYQ72
Page 35: ...Specifications SiUS39 602 24 Specifications...
Page 121: ...Field Setting SiUS39 602 110 Test Operation...
Page 129: ...Troubleshooting by Remote Controller SiUS39 602 118 Troubleshooting...
Page 225: ...Troubleshooting OP Unified ON OFF Controller SiUS39 602 214 Troubleshooting...
Page 232: ...SiUS39 602 Piping Diagrams Appendix 221 1 3 BS Unit BSVQ36MVJU BSVQ60MVJU 4D045338...
Page 235: ...Wiring Diagrams for Reference SiUS39 602 224 Appendix REYQ144 168 192MTJU C 3D050354A...
Page 240: ...SiUS39 602 Wiring Diagrams for Reference Appendix 229 2 4 BS Unit BSVQ36M 60MVJU 3D045069A...
Page 249: ...Example of Connection R 410A Type SiUS39 602 238 Appendix...
Page 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 602 244 Appendix...
Page 265: ...Precautions for New Refrigerant R 410A SiUS39 602 254 Precautions for New Refrigerant R 410A...
Page 269: ...SiUS39 602 iv Index...