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7. Test run
• 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.
• 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
Cause
Wired remote controller
LED 1, 2 (PCB in outdoor unit)
PLEASE WAIT
For about 2
minutes following
power-on
After LED 1, 2 are lighted, LED 2 is turned off,
then only LED 1 is lighted. (Correct operation)
• For about 2 minutes following power-on, operation of
the remote controller is not possible due to system
start-up. (Correct operation)
PLEASE WAIT → Error code
After about 2
minutes has
expired following
power-on
Only LED 1 is lighted. → 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 lighted. → 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 takes place.
• No signals from the remote controller are accepted.
• OPE lamp is blinking.
• The buzzer makes a short pipng sound.
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED 1, 2, 3) provided on the indoor controller, refer to the following table.
LED 1 (power for microcomputer)
Indicates whether control power is supplied. Make sure that this LED is always lit.
LED 2 (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 address “0”.
LED 3 (communication between indoor and outdoor units)
Indicates state of communication between the indoor and outdoor units. Make sure that this LED
is always blinking.
8. Easy maintenance function (Option)
By using the maintenance mode, you can display many types of maintenance data
on the remote controller such as the heat exchanger temperature and compressor
current consumption for the indoor and outdoor units.
This function can be used whether the air conditioner is operating or not.
During air conditioner operation, data can be checked during either normal
operation or maintenance mode stable operation.
* This function cannot be used during the test run.
* The availability of this function depends on the connecting outdoor unit. Refer to
the brochures.
Display example (Comp discharge temperature 64°C)
RG79D479H02_en.indd 15
2012/10/09 (火) 午前 11:38:00
