The simbi inopisa furna inogona kutangwa, uye pane overcurrent kana simba rawedzerwa. Zvikonzero zvinowanzoitika:

①Iyo yepakati frequency transformer yakakuvara kana kukanganisa,

②Iyo inverter pulse transformer yakakuvara kana kukanganisa,

③Inverter SCR kuparara kwakapfava kana kupindirana,

④Kudonha kweiyo yekutanga nhevedzano capacitor yepakati frequency transformer,

⑤Iyo yemagetsi inopisa capacitor ine kuparara kwakapfava, uye kuvharwa kwemhete yechoto kana bhari yemhangura haina kudzika zvakanaka kana kupfupika-kutenderera.