Eliminate the cause.
Continue the operation.
YES
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Turn the power ON, and then press
the remote controller check button
once.
NO
NO
Connect correctly.
NO
YES
Troubleshooting "
P4
".
YES
Replace the outdoor unit
inverter PCB.
YES
NO
Can it be considered
that the radiation fin temperature
was high? (∗1)
Is the connector
of the radiation fin thermistor
correctly connected to the
outdoor unit PCB?
(∗1)
"
P4
" is displayed?
Error is displayed again?