I can't seem to get the heater to heat. It just bomb out with a Heater took to long Error. I double checked the wiring and continuity tested it. Tried 2 Fury's and both error after a calibration period.. One did get to about 15 degrees and stop the other did nothing. IS there a hidden turn on heater option I'm missing? The second plug has power and both grounds connected and checked. I also checked 2 sensors, both did the same. Lyndon.