中文
含义
门联锁开关故障。微波炉门的安全联锁开关系统检测到异常，微波炉无法启动或运行时门状态信号错误，属于安全关键故障。
常见原因
- 门微动开关（通常有三个：主联锁、副联锁、监测开关）其中一个损坏
- 门钩或门框上的联动机构变形或断裂，无法正常触动开关
- 开关插头松动或接触不良
- 监测开关误动作或安装位置偏移
- 门铰链变形导致门关闭时密封不严
自助排查
- 检查炉门能否完全关闭，门钩是否活动自如
- 打开外壳找到门开关组件，观察开关是否有烧焦或外壳破裂
- 使用万用表测量各开关在门打开和关闭状态下的导通性
- 若开关已损坏，必须更换同规格开关，不可短接绕过安全联锁
English
Meaning
Door interlock switch fault. The microwave door safety interlock system has detected an anomaly. The microwave cannot start or the door status signal is incorrect during operation. This is a safety-critical fault.
Common Causes
- One of the door micro-switches (typically three: primary, secondary, and monitor) is damaged
- Deformed or broken door latch or frame linkage unable to actuate the switches correctly
- Loose or poor-contact switch connectors
- Misaligned or falsely triggered monitor switch
- Door hinge deformation preventing proper sealing when closed
Self-Check Steps
- Check whether the oven door closes fully and the door latches move freely
- Remove the outer case, locate the door switch assembly, and inspect for burn marks or cracked housings
- Use a multimeter to check each switch’s continuity with the door open and closed
- If a switch is confirmed damaged, replace with an identical-rated switch — never bypass the safety interlock