SiENBE34-703
Troubleshooting by Indication on the remote control
Troubleshooting
159
3.32
“
L5
”
Outdoor Unit: Inverter Compressor Abnormal
remote control
Display
L5
Applicable
Models
RXYSQ4~6P
Method of
Malfunction
Detection
Malfunction is detected from current flowing in the power transistor.
Malfunction
Decision
Conditions
When an excessive current flows in the power transistor.
(Instantaneous overcurrent also causes activation.)
Supposed
Causes
!
Defect of compressor coil (disconnected, defective insulation)
!
Compressor start-up malfunction (mechanical lock)
!
Defect of inverter PC board (A2P)
Troubleshooting
Higher voltage than actual is displayed when the inverter output voltage is checked by tester.
(V2812)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Compressor inspection
Caution
Inverter
output voltage
check Inverter output
voltage is not balanced.
(Normal if within ±5V Must be
measured when frequency
is stable.
Replace the compressor.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
Replace the inverter unit (A2P).
Correct power supply.
The compressor's
coil is disconnected
or the insulation is
defective.
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
There is
instantenious power
drop.
YES
YES
YES
NO
NO
NO
Summary of Contents for VRVIII-S
Page 1: ...SiENBE34 703 Basic Training Manual R 410A Heat Pump 50Hz Service Manual...
Page 11: ...Introduction SiENBE34 703 x...
Page 113: ...Field Setting SiENBE34 703 102 Test Operation...
Page 207: ...Troubleshooting by Indication on the Unified ON OFF Control SiENBE34 703 196 Troubleshooting...
Page 215: ...Wiring Diagrams SiENBE34 703 204 Appendix 2 3 Indoor Unit FXCQ20 25 32 63M8...
Page 216: ...SiENBE34 703 Wiring Diagrams Appendix 205 FXCQ40 50 80 125M8V3...
Page 217: ...Wiring Diagrams SiENBE34 703 206 Appendix FXFQ25 32 40 50 63 80 100 125P7VE...
Page 218: ...SiENBE34 703 Wiring Diagrams Appendix 207 FXZQ20 25 32 40 50M8V1...
Page 221: ...Wiring Diagrams SiENBE34 703 210 Appendix FXDQ20 25M8V3...
Page 222: ...SiENBE34 703 Wiring Diagrams Appendix 211 FXSQ20 25 32 40 50 63 80 100 125M8V3...
Page 232: ...SiENBE34 703 Option List Appendix 221...
Page 235: ...Example of Connection SiENBE34 703 224 Appendix...
Page 241: ...Method of Replacing the Inverter s Power Transistors Modules SiBE34 703 230 Appendix...
Page 261: ...RXYSQ4 5 6 P7Y1B SiENBE34 703 250 Removal Procedure...