Heated holding tanks?
On the fuse panel of my 2014 Greyhawk 31DS, there are 30 amp fuses for 'tank heaters 1, 2, and 3. I assume this means the fresh, grey, and black water tanks have heaters for cold weather use. I don't see info in the manual concerning tank heaters, i.e., how to turn them on/off, power light, etc. Anyone with knowledge of the tank heaters?
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