so I bought a Duluth Forge Dual Fuel Vent Free Fireplace Insert (FDF300R) - 26,000 BTU with Remote Control. I synced the remote with the receiver in the box and set the temp I wanted it to come on and go off at 69 degrees. It runs great but never actually shuts off. I went and looked at it yesterday and it was 74 degrees in that room. so i shut it off using the remote making sure the remote was still active according to the LCD display and went out to run errands thinking that it should come on its own once the temp dropped below 69 (factoring in the variance of 2 degrees it should have come on at least 67 degrees) when i returned the insert was not running and according to the remote it was 62 degrees in the room. Any ideas what I am doing wrong or what the problem may be?