16
OCH758
Notes:
1. If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and
the OPERATION INDICATOR lamp does not come on, there are no error records.
2. If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 seconds)” after the initial 2 beeps to confirm
the self-check start signal was received, the specified refrigerant address is incorrect.
• On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed in the LCD.
* The check code in the parenthesis indicates PAR-40MAA model.
.
● If the unit cannot be operated properly after test run, refer to the following table to find the cause.
Symptom
Cause
Wired remote controller
LED 1, 2 (PCB in outdoor unit)
Please Wait
For about 3
minutes after
power-on
After LED 1, 2 are lit, LED 2 is turned
off, then only LED 1 is lit.
(Correct operation)
• For about 3 minutes following power-on,
operation
of the remote controller is not possible
due to system startup. (Correct operation)
Please Wait → Check code
Subsequent to
about 3 minutes
after power-on
Only LED 1 is lit.
→ LED 1, 2 blink.
• Connector for the outdoor unit’s protection device
is not connected.
• Reverse or open phase wiring for the outdoor
unit’s power terminal block (L1, L2, L3).
Display messages do not
appear even when operation
switch is turned ON (operation
lamp does not light up).
Only LED 1 is lit.
→ LED 1 blinks twice,
LED 2 blinks once.
• Incorrect wiring between indoor and outdoor units
(incorrect polarity of S1, S2, S3)
• Remote controller wire short
On the wireless remote controller with condition above, following phenomena take place.
• No signals from the remote controller can be received.
• Operation lamp is blinking.
• The buzzer makes a short ping 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 microprocessor)
Indicates whether control power is supplied. Make sure that this LED is
always lit.
LED2 (power for remote controller)
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 addresses “0”.
LED3 (communication between indoor and outdoor units)
Indicates state of communication between the indoor and outdoor units.
Make sure that this LED is always blinking.
