My power transformer resistance measurements came up different than those listed on the Tech Sheet. Primary winding P16-5 to P16-7 called for 75 to 95Ohms and my readings were 58. Secondary winding P16-2 to P16-3 called for <1 ohms and my readings were 2.5 Ohms. Does this mean I have a short in the transformer and would this cause the LED lights to stop working?
Answer Dennis, based on your information, the control transformer is not shorted. But it has been under a load and stressed. We prefer to check voltage at the control board, it's a bit more accurate, but you need to be carefull. Check for 120 VAC across p16-5 and P16-7 (red wires on the control board out to the trans former. Then, across P16-2 and P16-3 (blue wires) for 12 to 20 VAC out of the transformer. If you have the voltages the transformer is good, and you'll need the control board. If the voltages are lower or not there, you'll need the transformer.