Si12-308 Troubleshooting
Service Diagnosis 183
Troubleshooting
Check No.4
Refer to P.208
Check No.6
Refer to P.210
Check the wiring and piping.
Check No. 4
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.
(R3059)
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. 6
Check the outdoor unit heat
exchanger thermistor.
Check No. 6
Check the room temperature
thermistor.
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