Arrived at location on 10/14/21 - Unit is smaller flat top to the right of the large one. Pilot out on the left, crew member said cord got burnt up and now not heating on left. Lit left pilot, held fine. Heated, no issues. Removed burnt up cord, power switch retaining clip is broken, regulator in back covered in oil, clogged vent and needs two thermocouples. Returned same day - Replaced left thermocouple. Tested, unit holds pilot and was heating when left.