Have a new customer with a Thyssen LEV residential in her home. Had a couple calls there recently, upon arrival find the car running but the customer states when the car is sitting at the floor and they go to use it, it wont run at which point they see a flashing "C" fault. Looked it up and it saw protective shutdown possibly caused by overloading. tried to recreate it a bunch but can't figure it out. Anyone familiar with this? Any ideas on what to look for?