The best place to get the remote for your electric fireplace would be from an authorized Fangyan dealer. You can also make an order for the remote control at an online store. You only have to enter the specifications of the Fireplace. You could find some help on the following site http://www.alibaba.com/showroom/electric-fireplace-remote-control.html.
We've sold hundreds of electric fireplaces and there are 2 main kinds of remote control receivers. One is on the electrical outlet or a box on the electric cord. These are available at any hardware store. The other type is a coded receiver. Coded receivers are basically electrical toggle switches and some have multiple channels. A controls company like skytech or hpc is where most manufacturers buy their transmitters and receivers. They have wall switches, hand-held transmitters, thermostatic transmitters, timers and they all function with a simple receiver with a learn function that will read millions of codes. If your remote is transmitting many independent controls (brightness, flame height, color, heat, speed of flame movement, etc) then you'll need to go to the manufacturer or to someone who knows the skytech controls so they can match the number of controls. Skytech controls can be made to work on just about anything with electricity.