Mitsubishi PLH-3AAK Technical & Service Manual page 36

• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
Symptom
Wired remote controller
PLEASE WAIT
PLEASE WAIT → Error code
Display messages do not
appear even when operation
switch is turned ON (operation
lamp does not light up).
On the wireless remote controller with condition above, following phenomena takes place.
• No signals from the remote controller are accepted.
• Opration lamp is blinking.
• The buzzer makes a short piping sound.
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2) provided on the indoor controller, refer to the following table.
LED1 (power for microcomputer)
LED2 (power for wired remote controller)
For about 2 •For about 2 minutes following power-on,op-
minutes follow-
eration of the remote controller is not possible
ing power-on
due to system start-up. (Correct operation)
•Connector for the outdoor unit's protection
device is not connected.
•Reverse or open phase wiring for the outdoor
After about 2
unit's power terminal block
minutes has
expired follow-
•Incorrect wiring between indoor and outdoor
ing power-on
units
•Remote controller wire short
Indicates whether control power is supplied. Make sure that this LED is
always lit.
Indicates whether power is supplied to the wired remote controller.
This LED lights only in the case of the main indoor unit.
Cause
36