Haier BD-478A service manual troubleshooting by touch, Maintenance Service And Trouble Shooting

normal running sounds. If there is heavy buzz that means the motor has not been started normally. If there is bump sound, this means that the suspended spring in the compressor is broken and the compressor is running in tilt. When these matters occur, please change compressor.

12.1.5 troubleshooting by touch

(1)Touch the cover of condenser, after continuous operation, the upper part of the cover is the warmest; the temperature of lower part is similar to room temperature. Its temperature is relative to environment temperature. The temperature in winter is low and the condenser’s temperature is low too, and there is only a small part warm. In summer, the temperature is high and the temperature of condenser cover is high too, and the whole condenser is warm.

(2)The temperature of high-pressure exhaust pipe is high, when touching with your hand, in summer it is hot; in winter it is also hot. The temperature of low-pressure gas inlet pipe is low. In summer there is dew at the pipe wall and it will feel cool when touching; when touching in winter, it will feel cooler.

MAINTENANCE SERVICE AND TROUBLE SHOOTING

Maintenance Service and Trouble Shooting

(3) The cover temperature of The evaporator can be as low as -30℃it will feel sticky when touching. If you’d like to touch,

１９

PDF created with pdfFactory trial version www.pdffactory.com