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Idiomas disponibles
FAULT CHECKUP
Please check the following before contacting a repair service.
Symptoms
Running water noise
Cracking sound
Unpleasant odor in outlet air
All of these are
Operating indicator flashing
not problems.
Waiting indicator
Idle indoor unit still has sound
of refrigerant flowing and
radiating temperatures
Clicking sound when unit
comes on
Start or Stop working
automatically
Failure to work
Please make
another ckeck.
Bad cooling & heating effects
Under the following circumstances, immediately stop the operation, disconnect the manual supply switch and contact the
after-service personnel.
• When control buttons are inoperable.
• When circuit breakers trip repeatedly.
• When the outdoor unit is blocked with ice or foreign objects.
• When the system fails to restart after power reset.
• When system operates abnormally.
10
Reasons
Running water sound can be heard during starting operation, during operation or immediately
after stopping operation. When it starts for 2-3 minutes, the sound may become louder, which is
the flowing sound of refrigerant or the draining sound of condensate water.
During operation, the air conditioner may make a crackling sound, which is caused from the
temperature changes of the heat exchanger.
The terrible smell may be caused from organic materials from walls, carpeting, furniture,
cigarette smoke and cosmetics that collect on the outside of the refrigerant coil.
When restoring power after power failure; turning on the manual
power switch will show the operating indicator flashes.
Displayed when the control is set it to the cooing or heating mode and the current mode of
operation is opposite to the requested setting.
Some refrigerant flow is allowed to pass through idle indoor units to prevent oil and refrigerant from
blocking the metering valve. This flow may result in some radiating temperature and noise.
The sound is made due to the expansion valve resetting when the unit is powered on.
Check if it is set to Timer - ON and Timer - OFF.
Check if there is a power failure.
Check if the supply fuse and breaker are disconnected.
Check if the unit is displaying any faults.
Check if wait symbol is displayed. This is due to other indoor units connected to the same outdoor unit
are running in the opposite mode. System cannot heat and cool simultaneously.
Be sure outdoor unit fan inlet and outlets are not blocked.
Check to be sure doors and windows are closed.
Check for dirty or blocked air filter.
Be sure fan settings are not set too low.
Be sure the temperature control is set correctly.
31-5000476 Rev. 0
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