Haier AB122MCERA Operation Manual - Page 21

Fault Checkup Please check the following when consigning repair service: Symptoms Reasons • Water flow sound • Cracking 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. During operation, the air conditioner may make the cracking sound, which is caused from the temperature changes or the slight dilation of heat exchanger. All these are not problems • Terrible smell in outlet air The terrible smell, caused from walls, carpet, furniture, clothing, cigarette and cosmetics, attaches on the conditioner. • Flashing operating When switching it on again after power failure, turn on the manual indicator power switch and the operating indicator flashes. It displays the awaiting indication as it fails to perform refrigerating • Awaiting indication 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. • Clicking sound when switching the air condition on When the conditioner is powered on, the sound is made due to the resetting of the expansion valve. • Start or stop working automatically Check if it is in the state of Timer-ON and Timer-OFF. Please make another check. • Failure to work 4 ' \ 4 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. 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 fuse and breaker have been burnt over and over; • 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. 19