I’VE NOTICED WHEN MY WIFE PARKS HER CAR IN THE GARAGE OUR FIREPLACE COMES ON. CAN AN OUTSIDE SOURCE INFLUENCE THE OPERATION OF MY REMOTE CONTROL UNIT?

Yes it’s possible for other electronics using the same RF technology as our products (such as a garage door opener) to influence the operation of the hearth remote. Simply change the dip switch settings in your transmitter & receiver, ensuring that they still match exactly, and that should eliminate the conflict between the two electronics.