My point, I don't know where the communication broke down between my installer and the manufacturer. Not my problem. Long story short, I payed out good money for something that doesn't work as promised, and it took me reporting them to get them to do something.
You are correct the communication between LL & your installer isn't your problem..unfortunately the lack of heat is your problem since it is you and your family dealing with it during the coldest snap in two years. It shouldn't be your problem, but with an installer that is not responsive since he already got full payment, it becomes your problem unless you want to sit around through the next cold snap waiting for them to do something. Who is this installer?
My approach and yours vary a little...I would have made the end run after 2-3 days (telling the installer that is all they had before I took action) at the most and worked with LL directly, letting them worry about collecting any other charges from my installer. The more time that you deal with a problem, the more emotionally driven you get (angrier) and that usually clouds the decision making process toward the best all around solution.
A public forum is one way to vent (i've done it myself) and on this particular forum a great way to find a resolution. When presented with the probable solution, the replacement fan, I would have called LL, (their phone # is listed multiple places in the manual) and got them to ship the fan to me directly. Move past the emotion and get to fixing it. Then you can get back to the justifiable, emotional, collecting of that pound of flesh from the installer while you are warm.
Good thing you didn't get a Harman boiler - talk about a company that hates its customers! At least LL is on here, accessible, and it seems open to suggestions. One suggestion in this case is they ship replacement fans directly to the end customers rather than through dealers if that is what the customer wants.
I am still very interested in the name of the installer, please list it.