具有自诊断功能和故障显示，可对一些常见的故障进行自行诊断同时进行分类显示，便于用户故障处理和维护；
Selt diagnosis and fault display functions can detect common faults by itself and give sorted displays , resulting in simplified troubleshooting and maintenance ;
具有自诊断功能和故障显示，可对一些常见的故障进行自行诊断同时进行分类显示，便于用户故障处理和维护；
Selt diagnosis and fault display functions can detect common faults by itself and give sorted displays , resulting in simplified troubleshooting and maintenance ;
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