Haier BD-478A service manual Poor freezing effect analysis and solutions

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(2)If noise is caused by tighten loose of screw between the base cover and freezer body, please make it tight.

(3)If the reason for noise is the aging rubber cushion of compressor or a loose fastening clip, please change rubber cushion, or secure clip.

(4)If tubing bumps against freezer body, or against each other, make adjustments accordingly to remove noise.

(5)If fan blade is blocked and thus causes noise, please clear the obstacles around the fan, or adjust fan blades.

(6)If the fan supporter is loose and noise is caused, please tighten.

12.1.7 Poor freezing effect analysis and solutions

(1) Check the position of temperature control dial, if it is set at “weak” position, please change to “middle” or close to strong position.

MAINTENANCE SERVICE AND TROUBLE SHOOTING

Maintenance Service and Trouble Shooting

(2)Check the rear side and the top of freezer, if it is too close to the wall or not; if the freezer is under sunlight directly or if it is

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Contents BD-478A Contents Product Code Illumination and Series Introduction First letter of Freezer in Chinese spellingFeatures FeaturesSpecifications BD-388A BD-478ASafety Precautions Safety Precautions 1420*715*810 1690*715*810 Net Dimension1420*715*1470 1690*715*1470 Installation and Accessory Parts ·Proper Air CirculationElectrical Requirement Installation and Accessory Parts Defrosting and Draining The Freezer Food Storage BasketSystem Flow Chart Adjustable temperature dial Function ScheduleMaintenance Service and Trouble Shooting Brief description of principle about BD-318A/428AServicing freezer Reasons of electricity leakage of freezerMaintenance Service and Trouble Shooting Maintenance Service and Trouble Shooting Troubleshooting by sounds Troubleshooting by touch System noise repair Poor freezing effect analysis and solutions How to handle the seal bar for poor sealing Why freezer cannot be used at low temperature environment How to know there is problem with compressor MotorPage Page Procedure for fan change Procedure for temperature controller changeCommon freezer problems Operation of freezer is not normal Repair equipment Requirements Service procedureEvacuation and fill machine is special only for R134a use Changing procedure of R134a compressor Compressor installation and brazing procedures Application and maintenance of freezer Product charactersPage Safety notice of product MaintenanceStandard procedure of maintenance 12.5 Freezer repair tool and equipment It is not allowed to fill R134a by R12 filling equipmentProcedure for filling equipment ⑧ Switch off motorCompressor Freezer noise sourcesFilling Resonance sound of compressor components How is the sound of water flowing generated? Gas flowing soundWhy the freezer’s noise increases after using Why freezer noise changes greater at night? Why freezer’s noise increases after stop use for sometime?How to reduce freezer’s noise? Sometime?Why freezer noise measured at home is incorrect? What are the national stipulations for freezer Noise?Page Why the noises of it type freezers are different? AnswerHow to determine that the sound is noise or Normal? Noise test There are stipulations in Items 6.5.7.1 and 6.3.6.1.of GB/TMaintenance Service and Trouble Shooting 12.8Measuring technology of freezer performance parameter Temperature with load Test method and instrumentGround resistor Maintenance Service and Trouble Shooting Maintenance Service and Trouble Shooting Maintenance Service and Trouble Shooting Exploded View List of Parts QTY BD-388A/478A 392% 600% Lamp switch BD-388A/478A 010% 020%