Jelrus 700d 700d I just bought this and the mailman broke off the heat controller switch on the front of it

Jelrus 700D is an industrial electric furnace controller that manages heating elements via a front‑panel heat‑controller switch. The most common failure when the switch is broken is loss of power to the heating circuit, often accompanied by a blown fuse or tripped breaker on the control board. First verify that the unit’s main power supply and any local fuses are intact; then inspect the remaining contacts on the heat‑control module for continuity and signs of arcing. Finally check the controller’s diagnostic LEDs or error codes to confirm whether the fault is isolated to the switch or indicates a deeper board issue.[oss-gpt-20b]

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