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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 table (10-4.) disappears, the
memorized failure details can be recalled.
This mode is very useful when the unit needs to be repaired for the abnormality which does not recur.
10-2. FAILURE MODE RECALL FUNCTION
1. Flow chart of failure mode recall function for the indoor/outdoor unit
Operational procedure
Yes
(Blinks)
No
(OFF)
Yes
No
Releasing the failure mode recall function
1. Regardless of normal or abnormal, a short
beep is emitted once as the signal is received.
Note1.Make sure to release the failure mode recall function once it is 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.
2. Blinking pattern when the indoor unit is abnormal:
3.Blinking pattern when the outdoor unit is abnormal:
ON
OFF
Beeps
Repeated cycle
Repeated cycle
ON
OFF
No beep
Beeps
Repeated cycle
2.5-second OFF
Blinking at 0.5-
second interval
2.5-second OFF
3-second ON
Blinking at 0.5-
second interval
Beeps
Repeated cycle
2.5-second OFF
Blinking at 0.5-
second interval
No beep
Beeps
Repeated cycle
2.5-second OFF
3-second ON
Blinking at 0.5-
second interval
Repeated cycle
Beeps
Does the left lamp of OPERATION INDICATOR lamp
on the indoor unit blink at the interval of 0.5 seconds?
Blinks: Either indoor or outdoor unit is abnormal.
Beep are emitted at the same timing
as the blinking of the left lamp of
OPERATION INDICATOR lamp. 2
The cause of abnormality cannot be found because the abnormality does not recur.
Setting up the failure mode recall function
Before blinking, does the left lamp of OPERATION
INDICATOR lamp stay ON for 3 seconds?
Stays ON for 3 seconds (without beep):
The outdoor unit is abnormal.
The indoor unit is abnormal.
Check the blinking pattern, and confirm the
abnormal point with the indoor unit failure mode table (10-2. 2.).
Make sure to check at least two consecutive blinking cycles. 2
Deleting the abnormal
memorized condition
Turn ON the power supply.
While pressing both OPERATION SELECT
button and TOO COOL button on the remote controller at the same
time, press RESET button.
First, release RESET button.
Hold down the other two buttons for another 3 seconds. Confirm that
the indicators on the LCD screen shown in the right figure are all
displayed. Then release the buttons.
After repairing the unit, recall the failure mode again according to "Setting up the failure
mode recall function" mentioned above.
Press OPERATE/STOP(ON/OFF) button of the remote controller (the set temperature is
displayed) with the remote controller headed towards the indoor unit. 1
Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted.
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.
Turn OFF the power supply and turn it ON again.
Press RESET button of the remote controller.
Judgment of indoor/outdoor abnormality
Press OPERATE/STOP(ON/OFF) button of the remote controller (the set temperature
is displayed) with the remote controller headed towards the indoor unit. 1
Indoor unit is normal.
But the outdoor unit might be abnormal because there are some
abnormalities that are not memorized in the indoor unit.
Confirm if outdoor unit is abnormal according to the flow chart of the
detailed outdoor unit failure mode recall function.
The outdoor unit is abnormal.
Check the blinking pattern, and confirm the abnormal point with the
outdoor unit failure mode table (Refer to outdoor unit service manual).
Make sure to check at least two consecutive blinking cycles. 3
As for outdoor unit, refer to outdoor unit service manual.
OB409E
