Airwell AWSI-DDV007-N11, Operation & Installation Manual

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6
Fault Checkup
Please check the following when consigning repair service:
Symptoms Reasons
All these are not problems
• Water flow sound
Water flow sound can be heard when starting operation,
during operation or immediately after stopping operation.
When it starts to work for 2-3 minutes, the sound may
become louder, which is the flowing sound of refrigerant or
the draining sound of condensed water.
• Cracking sound
During operation, the air conditioner may make the
cracking sound, which is caused from the temperature
changes or the slight dilation of heat exchanger.
• Terrible smell in outlet air
• Flashing operating
indicator
When switching it on again after power failure, turn on the
manual power switch and the operating indicator flashes.
• Awaiting indication
It displays the awaiting indication as it fails to perform
refrigerating operation while other indoor units are
in heating operation. When the operator set it to the
refrigerating or heating mode and the operation is opposite
to the setting, it displays the awaiting indication.
• Sound in
• shutdown indoor
• unit or white
• steam or cold air
To prevent oil and refrigerant from blocking the shutdown
indoor units, refrigerant flows in the short time and make
the sounds of refrigerant flowing. Otherwise, when other
indoor units performs heating operation, white steam may
occur; during refrigerating operation, cold air may appear.
When the conditioner is powered on, the sound is made
due to the resetting of the expansion valve.
Check if it is in the state of Timer-ON and Timer-OFF.
• Failure to work
Check if there is a power failure.
Check if the manual power switch is turned off.
Check if the supply fuse and breaker are disconnected.
Check if the protective unit is working.
Check if refrigerating and heating functions are selected
simultaneously with the awaiting indication on line control.
• Bad cooling & heating
effects
Check if air intake port and air outlet port of outdoor units are
blocked.
Check if the door and windows are open.
Check if the filtering screen of air cleaner is blocked with
sludge or dust.
Check if the setting of wind quantity is at low wind.
Check if the setting of operation is at the Fan Operation state.
Check if the temperature setting is proper.
During operation, the air conditioner may make the cracking
sound, which is caused from the temperature changes or
the slight dilation of heat exchanger.
Under the following circumstances, immediately stop the operation, disconnect the manual
supply switch and contact the after-service personnel.
• When buttons are inflexible actuated;
• When there are foreign objects and water in the refrigerator;
• When it cannot still be operated after removing the operation of protective unit;
• When other abnormal conditions occur.
Please make another check.
• Clicking sound when
switching the air condition
on
• Start or stop working
automatically