Fault Checkup - Carrier 40VC009F-7G-QEE Betriebs- Und Installationshandbuch

Fault Checkup
Please check the following when consigning repair service:
Symptoms
• Water flow sound
• Cracking sound
• Terrible smell in the
outlet air
• Flashing operating
indicator
• Awaiting indication
• Sound in shutdown
indoor unit or white
steam or cold air
• Clicking sound while
switching the air
condition ON
• Starts or stops work-
ing automatically
• Failure to work
• Bad cooling & heating
effects
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 fuse and breaker have been repeatedly burnt.
• When there are foreign objects and water in the refrigerator.
• When it cannot be operated even after stopping the operation of protective unit.
• When other abnormal conditions occur
Water flow sound can be heard while starting the operation, during operation or
immediately after stopping the operation. Initially for 2-3 minutes, the sound may become
louder, which is the flowing sound of refrigerant or the draining sound of condensed
water.
During operation, the air conditioner may make the cracking sound, which is caused
from the temperature changes or the slight dilation of heat exchanger.
The terrible smell, emitting from walls, carpet, furniture, clothing, cigarette and cosmetics,
attaches to the conditioner.
When switching it on again after a power failure, turn on the manual power switch. The
operating indicator will flash.
It displays the awaiting indication as it fails to perform refrigerating operation while
other indoor units are in heating operation. When the operator sets it to the refrigerating
or heating mode and the operation is opposite to the setting, it displays the awaiting
indication.
To prevent oil and refrigerant from blocking the shutdown indoor units, the refrigerant
flows in a short time and makes the sound. White steam may occur when other indoor
units perform the heating operations and cold air may appear during refrigerating
operation.
When the conditioner is powered on, the sound is heard due to the resetting of the
expansion valve.
Check if it is in the state of Timer-ON and Timer-OFF.
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.
Check if the 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 the air cleaner is blocked with sludge or dust.
Check if the setting of wind quantity is at low mode.
Check if the setting is at the Fan Operation state.
Check if the temperature setting is correct.
Reasons
8