electric garage heater
I have an electric garage heater with 3 elements and only one heats up. It is a single phase 240v hanging heater that has a fan for circulatin the air. I tested the electical supply, and there is 118v going to each end of the three elements. I thought that maybe two of the elements were bad, but to be sure, I switched the one in the center, the one that works, to the outside but now the same thing. The one in the middle works and the others do not. I bought the heater used, was "assured" it worked. The heater does not have an internal thermostate, and I have not yet hooked up one to it. I did not think this would be the problem as the thermostate only turns the unit on and off, correct? Anyone have any ideas what the problem could be. The heater is a Berko, model UH 15-240.