Analyze the reasons for the repeated loss of overload , the following aspects: ( 1 ) the mains instability ( high or low ) ; ( 2 ) a sudden power outage, call ; ( 3 ) non-stop or open refrigerator is not properly shut down ; ( 4 ) the conversion of poor quality overload .

 

    As the user uses the refrigerator automatic voltage regulator delay protection, therefore , can be ruled out in subsection (1 ) ( 2 ), the cause. And after a long observation refrigerators off on the test machine is also normal . If the poor quality of overload , but it is impossible to repeated loss of different models overload (1/8HP, 1/6HP, 1/4HP) and more just . At this point, a change of mindset , careful to TW89A type 850VA regulator testing, found that when the mains input is 220V , the table indicates that the regulator output is around 228V, with a digital meter measured output voltage is actually 245V ; with the regulator increased the input mains 240V, measured by the regulator output is 266V, the regulator can only boost, can not afford the antihypertensive effect . And there often during the day and electricity company in 200 ~ 230VI up at night about 230 ~ 265V. Thus the evening of the regulator will supply a refrigerator rose higher and higher , causing the compressor work overload , over-current , long time, overload due to frequent contact bimetal disc jump and turn causing contact ignition coke head , resulting in poor contact or failure. Failure does not occur again after the regulator repair , back into overload (2rFl/6HP) after .

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