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8-1-2. Forced Defrost Setup of Remote Controller (For wired remote controller only)
(Prepare in advance)
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8-1-3. LED Display on P.C. Board
1. D501 (Red)
• It goes on (Goes on by operation of the main microcomputer) at the same time when the power supply is
turned on.
• It flashes with 1-second interval (every 0.5 second): When there is no EEPROM or writing-in operation fails.
• It flashes with 10-seconds interval (every 5 second): During DISP mode
• It flashes with 2-seconds interval (every 1 second): While setting of function select (EEPROM)
2. D403 (Red)
• It goes on when power supply of the remote controller is turned on. (Lights on hardware)
3. D504 (Green): Sub bus communication
• It flashes for 5 seconds in the first half of communication with the remote controller. (Group master unit)
• It flashes with 0.2-second interval (for 0.1 second) for 5 second in the latter half of communication between
master and follower in the Gr indoor unit.
4. D14 (Orange)
• It flashes while receiving the serial signal from the outdoor unit. (Hardware)
5. D15 (Green)
• It flashes while sending the serial signal to the outdoor unit. (Hardware)
Push [MENU] and [▼] buttons simultaneously for at least 10 seconds.
• In the air-conditioning group control mode, and the indoor unit No. are displayed. The indoor unit
number displayed first is the main indoor unit number.
• In the non-group control mode (only one indoor unit), only 1-1 is displayed on the left.
Push [▼] or [▲] button to adjust the indoor unit number. The indoor unit number in the group
control will be changed cyclically. Select an indoor unit to change the settings and push
[TIME] button to confirm.
The fan of the selected indoor unit starts its operation and the swing operation starts after confirmation if it
has the louvers.
Using [▼] or [▲] button, set the CODE No. to [8C].
Use [MENU] button to adjust the flash from CODE No. to SET DATA on the left. Push [▼] or
[▲] button to set SET DATA to [0001].
Push [MENU] button to adjust the flash to CODE No. on the right after pushing [TIME] button to
confirm.
Push [ON/OFF] button to complete the setting when the setting is completed.
• To change the settings of another indoor unit, repeat from step 1.
Push [ON/OFF] button to start the air conditioner
Select the HEAT mode
• After a while, the forced defrost signal is sent to the outdoor unit and then the outdoor unit starts defrost
operation.
(The forced defrost operation is performed for Max. 12 minutes)
• After defrost operation finished, the operation returns to the heating operation.
Note: to execute the defrost operation again, start procedure from step 1.
(If the forced defrost operation was executed once, setting of the above forced defrost operation is cleared.)
(Practical operation)
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