" Malfunction of Indoor Unit Fan Motor
This malfunction is detected if there is no revolutions detection signal output from the fan motor.
When no revolutions can be detected even at the maximum output voltage to the fan.
Faulty indoor fan motor
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
and X27A connectors securely
12VDC supplied between the
Pins1 and 3 when the X27A is
disconnected and the
power supply turns
Are the X4A
power of approx.
Troubleshooting by Indication on the Remote Controller
Properly connect the
At this time, check for any faulty
connector contact or broken
Check the indoor unit fan motor
and the wiring circuits of the
Replace the indoor unit PCB.