Re: FMI Fireplace Thermostat
I don't know if I have the same model fireplace as yours. My fireplace controls have 2 switches and 3 adjustable controls with knobs. 1 switch is the master on, the other switch is the added heat switch. The one knob adjusts the background light intensity, the 2nd knob adjusts the vertical dancing flames image speed, and the 3rd knob adjusts the heater on setpoint. The light blower blows continuously, heated when the heater setpoint control tells the heater to come on.
The 3 adjustable controls have proven to be flaky over the years, but I have been able to direct a strong stream of Cramolyn DeOxideIt electrical contact restorer against the control shafts and into the controls. That fixes them for a while.