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12-1-3. 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. D503 (Yellow): Main bus communication
• It goes on for 5 seconds in the first half of communication with the central controller.
4. 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 be-
tween master and follower in the Gr indoor unit.
5. D14 (Orange)
• It flashes while receiving the serial signal from the outdoor unit. (Hardware)
6. D15 (Green)
• It flashes while sending the serial signal to the outdoor unit. (Hardware)
12-1-4. Function Selection Setup
<Procedure>
Perform setting while the air conditioner stops.
1
Push
TEST
+
SET
+
CL
buttons simultaneously for 4 seconds or more.
The first displayed unit No. is the master indoor unit address in the group control.
In this time, fan and louver of the selected indoor unit operate.
Ø
2
Every pushing
UNIT LOUVER
button (button at left side), the indoor unit No. in the group control is dis-
played one after the other. In this time, fan and louver of the selected indoor unit only operate.
Ø
3
Using the set temperature
TEMP.
buttons, specify the item code (DN).
Ø
4
Using the timer time
TIME
buttons, select the set data.
Ø
5
Push
SET
button. (OK if indication lights)
• To change the selected indoor unit, proceed to Procedure
2
.
• To change item to be set up, proceed to Procedure
3
.
Ø
6
Pushing
TEST
button returns the status
to the normal stop status.
1 2 3 4 5 6
END
<Operation procedure>
3
6
1
4
5
2
SET
TIME
TIMER SET
TEST
FILTER
RESET
TEMP.
CL
FAN
SAVE
SWING/FIX
VENT
MODE
ON / OFF
UNIT LOUVER