Our recently purchased home has de-icing cable and we rely on it to prevent ice dams and water intrusion (had a couple of wet spots last winter). It was not a professional installation. I called to have them repaired by a professional, but they insist on a complete removal, discard and replace which we cannot afford. I'm going to check continuity and relocate some cable to help water flow.
The way the current cable is positioned within the gutter does not seem ideal. It is in some places higher than the rim of the gutter and in other places lays on the bottom of the gutter. I don't see any specific instructions online, but photos of proper installations look like they try to keep the cable off of the bottom of the gutter. I'm guessing to avoid debris buildup in the summer.
I'm also not clear on whether or not to weave the gutter cable through the zigs of the roof cable or whether they should be attached by metal clip. They are currently attached by metal clip, but most have failed. I've seen both methods recommended.
In summary: Should I run gutter ice melt cable in the bottom of the gutter or suspended above? Should I weave the gutter cable thru the bends of the roof cable or attach with provided clips?