Service manual

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9-7. EMERGENCY-TEST OPERATION
When the remote controller is missing, has failed or the batteries run down, press the EMERGENCY OPERATION
switch on the front of the indoor unit. The unit will start and the Power monitor lamp will light.
The first 30 minutes of operation will be the test run operation. This operation is for servicing. The indoor fan runs at high
speed and the system is in continuous operation. The thermostat is ON and the timer is reset to normal.
After 30 minutes of test run operation the system shifts to EMERGENCY COOL MODE with a set temperature of 24˚C in
cooling. The fan shifts to Med. speed.
This operation continues until the EMERGENCY OPERATION switch is pressed or a button on the remote controller is
pressed, then normal operation will start.
The coil frost prevention circuit operates in this mode.
NOTE : Do not press the EMERGENCY OPERATION switch during normal operation.
9-8. AUTO RESTART FUNCTION
When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed
are memorized by the auto restart P.C. board.
The “AUTO RESTART” function sets to work the moment the power has restored after power failure. Then, the unit will
restart automatically. However if the unit is operatioed in “I FEEL CONTROL” mode, before power failure, the operation is
not memorized. In “I FEEL CONTROL” mode, the operation is decided by the initial room temperature.
NOTE
:
•The operation settings are memorized when 10 seconds have passed after the remote controller was operated.
•If the main power is turned off or a power failure occurs while AUTO START/ STOP timer is active, the timer setting is
cancelled.
•If the unit has been off with the remote controller before power failure, the auto restart function does not work as the
power button of the remote controller is off.
•To prevent breaker off due to the rush of starting current, systematize other home appliances not to tum on at the
same time.
•When some air conditioners are connected to the same supply system, if they are operated before power failure, the
starting current of all the compressors may flow simultaneously at restart.
Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting
corrent by adding to the system that allows the units to start one by one.
EMERGENCY
OPERATION switch
PROGRAM TIMER
● The OFF timer and ON timer can be used in combination.
● “ ” and “ ” display show the order of the OFF timer and ON timer operation.
PM
AM
PM
PM
(Example 1) The current timer is 8:00 PM.
The unit turns off at 11:00 PM, and on at 6:00 AM.
(Example 2) The current time is 11:00 AM.
The unit turns on at 5:00 PM, and off at 9:00 PM.
➝
Press once
<Cool>
Press again
<Stop>
Operation indicator
➝
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