Problems of automobile preheater

If the preheater is unplugged, there will be no electricity, and of course there will be no leakage. The preheater is heated by a resistance wire. If the resistance wire is broken, it cannot be heated. Most of these preheaters are made by private small workshops, and the quality is not guaranteed. Leakage and resistance wire burning often occur. It is suggested to replace it with one with better quality and better after-sales service. The failure of the preheater to heat is not necessarily caused by electric leakage. There are many reasons for electric leakage, such as poor insulation material and unreasonable design. After the resistance wire is burnt out, the short end contacts the preheater shell.