We recently bought an Entegra Ethos LI. I had water leaking from the water heating box that I was able to repair and don't see any other leaks. At night when the Timberline heater is used I'm getting water (maybe a handful of ounces) from under the refrigerator. Is there a drain from the refrigerator that could be plugged or could water be condensing from the heater use? It isn't much water but I want to stop this before it does damage something. We're in AZ where it's pretty dry so I'd be surprised if it was condensation. The sink is on top of the refrigerator and no leaks are visible from that. Any ideas? Thanks!