Mitsubishi Electric PKA-RP60FAL Service Manual page 18

• On wireless remote controller
2The continuous buzzer sounds from receiving section of indoor unit.
3Blink of operation lamp
• On wired remote controller
1Check code displayed in the LCD.
• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
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.
• OPE 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, 3) provided on the indoor controller, refer to the following table.
LED1 (power for microcomputer)
LED2 (power for remote controller)
LED3 (communication between indoor and
outdoor units)
Symptom
LED 1, 2 (PCB in outdoor unit)
For about 2
After LED 1, 2 are lighted, LED 2 is
minutes follow- turned off, then only LED 1 is
lighted. (Correct operation)
ing power-on
Only LED 1 is lighted. →
After about 2
minutes has
expired follow-
Only LED 1 is lighted. →
ing power-on
Indicates whether control power is supplied. Make sure that this LED is
always lit.
Indicates whether power is supplied to the remote controller.
This LED lights only in the case of the indoor unit which is connected to the
outdoor unit refrigerant address "0".
Indicates state of communication between the indoor and outdoor units.
Make sure that this LED is always blinking.
•For about 2 minutes following power-on,op-
eration of the remote controller is not possible
due to system start-up. (Correct operation)
•Connector for the outdoor unit's protection
device is not con-nected.
•Reverse or open phase wiring for the outdoor
LED 1, 2 blink.
unit's power terminal block (L1, L2, L3)
•Incorrect wiring between indoor and outdoor
units (incorrect polarity of S1, S2, S3)
LED 1 blinks twice,
•Remote controller wire short
LED 2 blinks once.
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Cause