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2. Self diagnostic function
(1) When trouble occurs during operation, the unit stops and enters the self-diagnostic mode, and displays the trouble loca-
tion with the timer lamps on the remote controller. All the other lamps are OFF.
(2) To activate the self-diagnostic function for service, press the UP and DOWN buttons simultaneously for more than two
seconds during operation with
lamp ON.
(3) The timer lamps show the latest trouble. Trouble data is memorised unit the next trouble occurs, even when the breaker
turns OFF. To clear the memory, press the UP and DOWN buttons simultaneously for more than two seconds during
the test run.
(4) All buttons except the POWER ON/OFF button are unavailable during the self-diagnostic mode.
(5) To release the self-diagnostic mode, press the POWER ON/OFF button.
TEMP.
12
11
10
9
8
7
6
5
1
2
3
4
(Indicates that the unit is in self-diagnostic mode)
TIMER
TEMP.
29 Remote controller interface signal error
28 Mis-wiring or indoor-outdoor signal error
27 Indoor thermistor abnormally
26 Outdoor thermistor abnormally
25
24
23
22
18
19
20
21
OC281-B-3.qxp 04.2.10 2:23 PM Page 79