Doug, 1st of all thanks for all ur input. I can tell ur very knowledgeable & I appreciate everything offered. Just hate it I'm NOT @ A/C.I believe u have it narrowed down for me. When I initiated power to the Coach & go inside the A/C is already running;but NO fan;I noticed the thermostat fan was on auto.When I turned on the fan, it blower cold til I took off & put back on auto and fan stopped with a.c. still running. At this time I unplugged & I believe ur right about Board. Gonna order one tomorrow. What do u think? Thanks4 ur patience