Haier HB21FWRSS Service Manual - page 45

Analysis of Trouble 

When the heat-insulation layer inside the case body deteriorates or the door seal is not 

closely touches the doorframe, the temperature in the refrigerator will rise and makes the 

compressor running continuously. 

Remedy 

Check the heat-insulation layer for its damaged parts; repair it to improve its heat-insulation 

property. If the door has deformed or the door seal is not tightly sealed against the case body, 

repair them, respectively. 

5) Too much food is placed in the refrigerator, or is placed too densely, resulting in poor 

ventilation or poor conditions for temperature sensing, and hence no stoppage of the 

compressor.

6) Too high ambient temperature, poorer ventilation and heat dissipation makes the 

compressor running without stop. 

F. Electric leakage of refrigerator 

1) Slight electric leakage 

Electric insulation has deteriorated due to being affected with damp, thus resulting in slight 

electric leakage. 

2) Serious electric leakage 

Refrigerator case has become live due to faults occurred in some electric devices or the 

erroneous wiring in installing power cord plug or outlet by the user. This is very dangerous. 

3) Electric leakage test 

a) Slight electric leakage 

A tingle sense will be experienced as soon as you touch the metal parts of the refrigerator 

with your hand. When you test them with a test pencil, its neon lamp will come on .In that case, 

the first thing you need to do is to determine whether the grounding is perfect .If the 

grounding is no problem, turn off the refrigerator immediately, then check the insulation of 

electric circuits with an avometer. 

b) Serious electric leakage  

Never touch the case body of the refrigerator, its door handle or other metal parts with your 

hand. Test the refrigerator with a test pencil, it will  

light up intensively ;measure the resistance between the power cord plug and the case body 

with an avometer ,the reading  will be zero (0ȍ); in the worst case ,the fuse will be 

blown .Check the 3-prong outlet to see whether the live wire and the null line are inversely 

connected ,this makes the ground protection lead-out from the power cord plug being 

connected to the live wire .Another possibility is that the live wire and null line of the outdoor 

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