I have a 2013 Bighorn 3010RE with the Honeywell wall control. Worked great untill the other day . In the past, as soon as I slid the lever to the right( no more than 1/8 inch) the cover opener would engauge, lift up and start the fan. Now the wall unit will do nothing to start the fan . Do these control units have a history of failure. The fan works fine manually( but it is a long ways up).