I've replaced many Amanda control boards. They have micro relays attached to the board. These relays are about a half inch by 1 inch in size, and control line voltage to the compressor and blower motor, and give up quite often. Its probably the board if its a digital controlled board. If it has manual, turn to select, type knob, it will be in that fan section knob. Hope this helps!
I dont know about this model but in general electric heat wont have a reset button the heat is controled by a sequencer and each elememt has a safty limit switch incase the sequencer sticks in the on mode here is a link to where you can get more info on this model http://www.fixya.com/support/p51773-amana_ptc153b35aj_air_conditioner