Haier BD-478A service manual Troubleshooting observation, Maintenance Service And Trouble Shooting

tetra chloromethane or alcohol to clean it. If the leakage occurs in the inner of compressor, it needs to be changed.

(3)Leakage of temperature controller: because of too long a period of service or too high temperature, or too much dirt, or too high humidity, there may be electricity leakage. If it has been defined that there is leakage of temperature controller, please change.

(4)Leakage of starting relay: during mounting and repairing, screw of relay lead is easy to contact the shell and leakage will then occur. If you suspect the relay is bad, check it. If there is leakage, please make the connections again and leave a piece of insulation paper under the screw.

(5)Leakage of fan: because of too high humidity of freezer environment or a bad fan controlling unit, the fan is burned after long time operation and thus causes leakage. Using voltammeter to measure the insulation resistance between each respective connection terminal and the freezer body, if the resistance is too little, means there is leakage caused by humidity; if the resistance

Is zero, means the fan coil is burned or short-circuited. Please change the fan.

MAINTENANCE SERVICE AND TROUBLE SHOOTING

Maintenance Service and Trouble Shooting

12.1.3 Troubleshooting observation

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