Operator's Manual
En-9
SLEEP TIMER  OPERATION
Unlike other timer functions, the SLEEP timer is used to set the length of time until air conditioner operation is stopped.
To Use the SLEEP Timer
While the air conditioner is operating or stopped, press the 
SLEEP button (Fig. 5 
H
).
The indoor unit’s OPERATION Indicator Lamp (green) (Fig. 3 
5
) lights and the 
TIMER Indicator Lamp (orange) (Fig. 3 
6
) light.
To Change the Timer Settings
Press the SLEEP button (Fig. 5 
H
) once again and set the 
time using the TIMER SET (   /   ) buttons (Fig. 5 
O
).
Set the time while the Timer Mode Display is fl ashing (the fl ashing will continue 
about 5 seconds).
 button: 
Press to advance the time.
 button: 
Press to reverse the time.
About 5 seconds later, the entire display will reappear.
To Cancel the Timer:
Use the TIMER MODE button to select 
“CANCEL”.
The air conditioner will return to normal 
operation.
To Stop the Air Conditioner During 
Timer Operation:
Press the START/STOP button.
About the SLEEP Timer
To prevent excessive warming or cooling during sleep, the SLEEP timer function automatically modifi es the thermostat set-
ting in accordance with the set time setting. When the set time has elapsed, the air conditioner completely stops.
During Cooling/Dry operation:
When the SLEEP timer is set, the thermostat setting is au-
tomatically raised 2 °F every 1 hour. When the thermostat 
setting is raised a total of 4 °F, the thermostat setting at that 
time is maintained until the set time elapses, at which time 
the air conditioner automatically turns off.
SLEEP timer setting
During Heating operation:
When the SLEEP timer is set, the thermostat setting is 
automatically lowered 2 °F every 30 minutes. When the ther-
mostat setting is lowered a total of 8 °F, the thermostat set-
ting at that time is maintained until the set time elapses, at 
which time the air conditioner automatically turns off.
SLEEP timer setting
4 °F
6 °F
8 °F
30
minutes
2 °F
1 hour
1 hour
30 minutes
Set time
Set time
1 hour
2 °F
4 °F
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