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11-4. Self-Diagnosis by Remote Controller (Check Code)
1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller.
2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation
condition and indicates the information of the self-diagnosis on the display of the remote controller with the
check codes. If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10
seconds
(Beep, Beep, Beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.
11-4-1. How to Use Remote Controller in Service Mode
Push [CHECK] button with a tip of pencil to set the
remote controller to the service mode.
• “ ” is indicated on the display of the remote
controller.
Push [ON ] or [OFF ] button
If there is no fault with a code, the indoor unit will beep
once (Beep) and the display of the remote controller will
change as follows :
• The TIMER indicator of the indoor unit flashes continuously.
(5 times per 1 sec.)
• Check the unit with all 52 check codes ( to )
as shown in Table-11-4-1.
• Push [ON ] or [OFF ] button to change the check
code backward.
If there is a fault, the indoor unit will beep for 10
seconds (Beep, Beep, Beep...).
Note the check code on the display of the remote
controller.
• 2-digits alphanumeric will be indicated on the display.
• All indicators on the indoor unit will flash.
(5 times per 1 sec.)
Push [START/STOP] button to release the service mode.
• The display of the remote controller returns to as it
was before service mode was engaged.
Time shortening method.
1. Push SET button while pushing CHECK button.
2. Push [START/STOP] button.
1
2
3
4
Alphanumeric characters are
used for the check codes.
is 5. is 6.
is A. is B.
is C. is D.
• • •
Fig. 11-4-1