Verify the breaker is on (reset) then power up and verify voltage with a meter, there are safty devices that will keep the unit from energizing other than the switch

Adding an electric log fireplace insert is the best way to add a traditional warm fireplace log experience to your living room or bedroom without going through the trouble & expense of installing, cleaning and maintaining a real wood-burning unit.
Electric log inserts are self-contained appliances that simulates live flickering flames using one of several different methods. Most use electric or ethanol technology to produce the simulated flame effect.
Log inserts are the most popular type of electric fireplace insert sold, today. Today's electric fireplace inserts use LED lighting, water vapor or a light fabric & a fan to fool the eye into seeing live flames. Some of these flame effects can be incredibly realistic.
Some electric log inserts also produce heat, but many are simply for show.
Ethanol log fireplace inserts burn cool-temperature alcohol mixed with special dyes to simulate a colorful wood fire. Most ethanol inserts are not used for heat, they are simply for show. The downside of an ethanol unit is you have to replenish the fuel/dye mixture. If you want to read more information then click on the following site
http://www.topratedfireplaceinserts.com/best-log-fireplace-inserts/

Check power supply and test switch and components

Electric fireplaces enjoy many advantages over traditional wood and gas-burning fireplaces. An electric fireplace insert is cheaper to set up, requires almost no maintenance, and you never have to worry about your home getting smoky. Best Electric Fireplace 2018 Top 15 Reviews Best Deals