Haier BD-478A service manual How to determine that the sound is noise or normal?

(3)When freezer stops, the compressor decelerates, high pressure and low pressure at gas exhausting tube and returning tube will get balance, thus causes sound of compressor.

(4)At the starting of compressor, if the voltage is low, the hammer

type-starting relay will make loud sound. Even if stabilizer is equipped with, measurement should be made in time. If it cannot reach the requirement of stabilizing, there must be quality problem with it, please don’t use in case the voltage output is low.

For the previous reasons, freezer makes sound at starting and stopping.

12.6.15Why sometimes noise at far distance is greater than at near distance?

Answer: Because the transfer of freezer noise has relations with freezer position, room space, etc. The sound wave giving out at freezer operation will reflect when it touches wall or furniture. So it is possible that at a far distance, it is noisier than near distance. So it is not correct to make decision of big sound just by it can be heard meters away.

MAINTENANCE SERVICE AND TROUBLE SHOOTING Maintenance Service and Trouble Shooting

12.6.16How to determine that the sound is noise or

normal?

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