The fireplace did not work when first turned on. I changed the batteries in the remote but still not working. i checked the power and found that power was coming in to the unit but not going past the on switch. I removed the back panel and seen that the wiring from the on switch was not connected to anything. i found what looked like the location that it should go, plugged it in and  everything lit up. I spent considerable time fixing this but now that it is working i really like it, everything works as it should. 
  Rob Dunn