49-5000440 Rev. 3
13
TROUBLESHOOTING TIPS
Troubleshooting Tips
Problem
Possible Causes
Solution
Unit does not start or
operate
Power supply cord is not plugged into an
outlet.
Plug the power cord into a grounded 3 prong
outlet.
Power supply cord has tripped.
Press and release the RESET button on the
power supply cord.
The Power button has not been pressed. Press the Power button on the Control Panel or
Remote Control to turn ON the air conditioner.
There is no power to the electrical outlet. Plug a working lamp into the outlet to check for
power.
A household fuse has blown or a circuit
breaker has tripped.
Replace the fuse or reset the circuit breaker.
The control was programmed for a Time
Delay.
Cancel the Time Delay. See “Control Panel.”
The batteries in the remote control are
dead.
Replace the batteries.
The internal water tank is full.
NOTE:
The air conditioner automatically
turns off, and the Water Full indicator
illuminates to alert you of this condition.
Empty the water tank. See “Air Conditioner
Care.”
Remote control is not
working
Batteries are dead.
Replace the batteries.
Batteries are installed incorrectly.
Make sure the batteries are inserted in the
correct position.
Air conditioner is
working but the room
is not cooling.
The room temperature is hot.
NOTE: On extremely hot and humid
days,the air conditioner will take longer
to cool the room.
Allow time for the room to cool when you first turn
on the unit.
Make sure the air conditioner has an adequate
BTU rating for the size of the room being cooled.
The control is set incorrectly to Fan or
Dehum mode.
Set the Mode to Cool and the Fan Speed to High.
Airflow is restricted.
Remove any obstacles to the airflow and redirect
airflow for uniform cooling.
Temperature set too high.
Lower the set temperature.
Air filters are dirty or restricted.
Clean the air filter. See “Air Conditioner Care.”
Air conditioner installed incorrectly
Check the exhaust hose and window panel for
proper installation.
Doors and windows are open.
Close the doors and windows to the room being
cooled to prevent cooled air from escaping.
Error Codes
Code
Meaning
E1
The hose temperature sensor is abnormal
E2
The room temperature sensor is abnormal
E4
Anti-freeze protection
FL
Full-water
