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LED display on P.C. board (MCC-1570, 4-Way Casstte Type only)
1. D501 (Red)
• D501 goes on at the same time when the power supply is turned on.
(Goes on with operation of the main microprocessor)
• D501 flashes with 1-second interval (every 0.5 second) : When there is no EEPROM or write-in error
• D501 flashes with 10-seconds interval (every 5 second) : In DISP mode
• D501 flashes with 2-seconds interval (every 1 second) : During setting of function exchange
(EEPROM)
2. D403 (Red)
• D403 goes on when power is supplied to the remote controller. (ON in hardware)
3. D503 (Yellow): Indoor/Outdoor central control
• D503 goes on for 5 seconds at the first half during communication with the central controller.
• D503 flashes for 5 seconds with 0.2-second interval at the latter half during communication with
outdoor unit. (Goes on for 0.1 second, goes off for 0.1 second)
4. D504 (Green): Remote controller communication
• D504 goes on for 5 seconds at the first half during communication with remote controller.
(Header unit of group)
• In the group indoor unit, D504 flashes for 5 seconds with 0.2-second interval at the latter half during
communication between header and follower unit. (Goes on for 0.1 second, goes off for 0.1 second)
High wall type wireless remote controller A-B selection>
Using 2 wireless remote controllers for the respective air conditioners, when the 2 air conditioners are closely
installed.
Wireless remote controller B setup
1. Push button on the indoor unit to turn the air conditioner ON.
2. Point the wireless remote controller at the indoor unit.
3. Push and hold CHK z button on the wireless remote controller by the tip of the pencil.
“00” will be shown on the display.
4. Push
z
during pushing CHK z .
“B” will be shown on the display and “00” will be disappear and the air conditioner will turn OFF.
The wireless remote controller B is memorized.
NOTE
• Repeat above step to reset wireless remote controller to be A.
• The wireless remote controllers do not display “A”.
• The factory default of the wireless remote controllers is “A”.
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