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Si12-619A
Troubleshooting
Service Diagnosis
223
Troubleshooting
Check No.04
Refer to P.261
Check No.06
Refer to P.263
Check the wiring and piping.
Check No. 04
Check the electronic expansion
valve.
Activate the wiring error
check mode.
Replace the defective EV
or coil.
Replace the heat
exchanger thermistor.
Replace the room
temperature thermistor.
Replace the room
temperature thermistor or
indoor unit heat exchanger
thermistor.
Do the vacuum-drying.
Replace the indoor unit
PCB and then start the
wiring error check mode.
(R4715)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Wiring or piping out of spec?
YES
NO
NO
YES
NO
YES
NO
YES
YES
NO
Error again?
Motor functioning?
Thermistor as specified
in its characteristic
chart?
Thermistor as specified
in its characteristic
chart?
Change the gas to let moisture out
of the unit (after drawing a
vacuum).
Check No. 06
Check the outdoor unit heat
exchanger thermistor.
Check No. 06
Check the room temperature
thermistor.
Summary of Contents for 3MKS50DVM
Page 13: ...Introduction Si12 619A xii ...
Page 131: ...Control Specification Si12 619A 118 Function and Control ...
Page 213: ...Instruction Si12 619A 200 Operation Manual ...
Page 283: ...Check Si12 619A 270 Service Diagnosis ...
Page 302: ...Si12 619A Outdoor Unit E Series 50 52 58 Class Removal Procedure 289 Step Procedure Points ...
Page 385: ...Wiring Diagrams Si12 619A 372 Appendix FTK X S50 60 71FVLT ...
Page 399: ...Si12 619A vi Index ...