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oil pan 4 · 08-21-16, 01:57 PM

I put those switches on my welding machine when I converted it to DC. The original on off switch is still used, but it only turns the fan on and off. The $5 neon red light switch was a big improvement over the tiny little toggle switch that turns the unit on and off.

You may not want to put MOVs in the power line near the air conditioner its self.
It looks like the air conditioner uses one of the power wires and dedicated signal wire to communicate with the outside unit.
Now in industrial instrumentation you can run into problems with coms when you have "power filtering" or MOVs too close to the instruments. The noise filters can filter out the 250MHz coms overlay signal. I don't know what frequency this unit uses but that's what industrial applications use. As long as your power filter is located more than 10 to 15 feet away you wont have this problem.

08-21-16, 01:57 PM	#31
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	I put those switches on my welding machine when I converted it to DC. The original on off switch is still used, but it only turns the fan on and off. The $5 neon red light switch was a big improvement over the tiny little toggle switch that turns the unit on and off. You may not want to put MOVs in the power line near the air conditioner its self. It looks like the air conditioner uses one of the power wires and dedicated signal wire to communicate with the outside unit. Now in industrial instrumentation you can run into problems with coms when you have "power filtering" or MOVs too close to the instruments. The noise filters can filter out the 250MHz coms overlay signal. I don't know what frequency this unit uses but that's what industrial applications use. As long as your power filter is located more than 10 to 15 feet away you wont have this problem.