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Originally Posted by emcinnis
Yes, the silicon grease came with the regulator. Wasn't sure how much to use. I spread a medium coat on the regulator. I assume that it is to dissipate the heat. Something unrelated, now I am hearing a high pitch whine that only appears on high fan setting. Does not sound mechanical, happens as soon as I put the fan on high and stops when I back down one setting. Any idea what is causing it?
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. . to use too much; just enough to give a not-too-thick coating on the plate.
Interesting, I too at times hear the same high pitch at the mid (auto) to high settings. I've replaced mine a few years ago and mostly run it on one to two clicks above MIN, so no whine but it's there on higher settings.
Sounds, like it's a by-product of the new regulator. Tnx for letting us know.