Why does the electric tricycle controller protection not work?
2 Answers
Electric tricycle controller protection not working reasons are introduced as follows: Introduction one: The protection device set by the controller generally has two types of devices. The most common one in daily use is overvoltage protection, which means when the external voltage of the controller exceeds the maximum voltage that the controller can normally work with, the protection circuit inside the controller is triggered, causing the controller to stop working. Introduction two: The other type utilizes a temperature-controlled switch to activate the protection circuit, meaning when the working temperature of the controller exceeds the temperature at which it can operate normally for a long time, the protection circuit is triggered to achieve the purpose of protecting the charger.
My three-wheeler broke down like this last time, it was so frustrating! When the controller goes into protection mode, it's mostly a power supply issue. Quickly check the battery terminals with a multimeter. If it's below 40 volts, it's definitely either a drained battery or loose connections—tighten the screws or charge it up. If the voltage is normal, it's probably a loose motor wiring harness, especially focus on those three thick wire connectors between the controller and the motor. Last time, my connector was clogged with mud—just unplug it, clean it, snap it back in, and it worked immediately. Oh, and if the controller's heat sink is too hot to touch, let it rest for half an hour. When it's in overheat protection, the dashboard will flash an E5 code. Also, make sure the wiring harness near the controller is neatly arranged—if it's tied too tightly and the insulation wears off, causing a short circuit, that’d be a real headache.
