Cassette Operation Manual

En-6

CHECK ONCE MORE

Does not operate at all

• Has the circuit breaker been turned off?

• Has there been a power failure?

• Has a fuse blown out, or a circuit breaker been tripped?

• Is the timer operating?

Poor cooling (or heating*) performance

• Is the air ﬁ lter dirty?

• Are the air conditioner’s intake grille or outlet port

blocked?

• Did you adjust the room temperature settings (thermo-

stat) correctly?

• Is there a window or door open?

• In the case of Cooling operation, is a window allowing

bright sunlight to enter? (Close the curtains.)

• In the case of Cooling operation, are there heating ap-

paratus and computers inside the room, or are there too

many people in the room?

• Is the unit set for Quiet operation?

• Is the air conditioner in Economy mode?

If the problem persists after performing these checks, or

if you notice burning smells, stop operation immediately,

disconnect the power supply, and consult with authorized

service personnel.

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