I have a Heat-N-Glo fireplace with a DSI electronic ignition module. The overhead lights are on a different circuit. When the lights are off, the fireplace will start without a problem. When the lights are on, the fireplace will not start, even though it is getting power. The DSi module returns an error code saying it is going into a hard lockout state. I've contacted Heat-N-Glo and they have been no help. Local dealers say that these a troublesome ignition modules and that they are finicky with their grounds. I have cleaned and checked the ground connections and they seem fine. Any thoughts on what is happening and how to fix it?