13
Outline of the function
This air conditioner can memorize the abnormal condition which has occurred once.
Even though OPERATION INDICATOR lamp indication listed on the troubleshooting check (9-4.) table disappears, the
memorized failure details can be recalled.
This model is very useful when the unit needs to be repaired for the abnormality which doesn't recur.
9-2. Failure mode recall function
1. Flow chart of the indoor/outdoor unit failure mode recall function
Operational procedure
Releasing the failure mode recall function
Note1.Make sure to release the failure mode recall function once it's set up, otherwise the unit cannot operate properly.
2.If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.
3.In case the right lamp of OPERATION INDICATOR lamp is blinking, the indoor unit and outdoor unit are commuicating normally.
If its lighting or not lighting, they are not normally communicating.
The cause of abnormality cannot be found because the abnormality doesn't recur.
Setting up the failure mode recall function
Turn ON the power supply.
1
While pressing both OPERATION SELECT button and TOO COOL
button on the remote controller at the same time, press RESET button.
2
First, release RESET button.
And release the other two buttons since all LCD in operation display
section of the remote controller is displayed after 3 seconds.
Deleting the abnormal condition
1
After repairing the unit, recall the failure mode again according to
"Setting up the failure mode recall function" mentioned above.
2
Press EMERGENCY OPERATION switch so that the memorized
abnormal condition is deleted.
3
Release the failure mode recall function according to "Releasing the
failure mode recall function" mentioned above.
Repair the defective parts.
Release the failure mode recall function by the following procedures.
1
With the remote controller headed towards the indoor unit, press any button
that is not used in this failure mode recall function (e.g. TIMER button) .
OR
1
Turn OFF the power supply of the indoor unit and turn ON it again.
2
Press RESET button of the remote controller.
Press OPERATE/STOP(ON/OFF) button with the
remote controller headed toward the indoor unit,
and check if the beeping sound is heard ONCE.
1
While pressing both OPERATION SELECT
button and TOO COOL button on the
remote controller at the same time,
press RESET button.
2
First, release RESET button.
And release the other two buttons since all LCD
in operation display section of the remote controller
is displayed after 3 seconds.
Is the left lamp of OPERATION INDICATOR lamp on
the indoor unit blinking ?
The indoor unit is abnormal .
Check the blinking pattern, and refer to confirm the
abnormal point(9-2.2.).
Press OPERATE/STOP(ON/OFF) button with the
remote controller headed toward the indoor unit,
and check if the beeping sound is heard TWICE.
The outdoor unit is abnormal
Check the blinking pattem, and refer to confirm the
abnormal point(Service manual OB391).
Did you press OPERATE/STOP(ON/OFF) button
for checking the abnormality of the indoor/outdoor unit
at least twice?
*Do not press any other buttons except for
OPERATE/STOP(ON/OFF) button while the unit is
operated in failure mode.
(Otherwise, failure mode may be released although it’s up
to the model.)
Is the left lamp of OPERATION INDICATOR lamp on
the indoor unit blinking ?
Blinking
No
Yes
Yes
Not Blinking
No
Not Blinking
No
Blinking
Yes
AMPM
CLOCK
:
AMPM
•As for outdoor unit, refer to service manual OB391.
OB390--1qxp 05.2.9 11:27 Page 13
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