Carrier XCT 7 40VD072H-7S-QEE, Инструкция по установке и эксплуатации

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5
Please check the following when consigning repair service:
Under the following circumstances, immediately stop the operation, disconnect the manual supply switch and contact the
after-service personnel.
• When buttons are inflexibly actuated;
• When there are foreign objects and water in the refrigerator;
• When it cannot be operated even after removing the operation of protective unit;
• When other abnormal conditions occur.
Fault Checkup
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, for the first 2-3 minutes
the sound may become louder due to the flow of refrigerant or the drainage of
condensed water.
• Cracking sound During operation, the air conditioner may make a cracking sound, which is
caused by temperature changes or the slight dilation of heat exchanger.
• Bad smell in outlet air The bad smell is caused by walls, carpet, furniture, clothing, cigarette smoke,
and cosmetics.
• Flashing operating indicator After switching on the unit again after power failure when the manual power
switch is turned on, the operating indicator flashes.
• Awaiting indication It displays failure to perform refrigerating operation while other indoor units
are in heating operation. When the operator sets it to a refrigerating or heating
mode and the operation is opposite to the setting, the awaiting indication is
displayed.
• Sound in shutdown indoor unit or
white steam or cold air
To prevent oil and refrigerant from blocking the shutdown indoor units,
refrigerant flows quickly and make this sound as it flows. Otherwise, when
other indoor units perform heating operation, white steam may occur; during
refrigerating operation, cold air may appear.
• Clicking sound when switching
the air condition on
When the conditioner is powered on, this sound is made due to the resetting
of the expansion valve.
Please make another check
• Start or stop working
automatically
Check if the unit 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.