DCM3 :Service 2 of 2, Heat, Changed F(2)20x25x1, (1) F16x20x1 Performed Heating Maintenance Per Checklist, found the barn barn unit is not running due to the air handler disconnect was bypassed and had burnt up, system has 10kw Heat strips and according to the manufacturer it appears that system needs 6 gauge wire and not 8 gauge and a new disconnect. Other system is running at this time but due to age and condition multiple part failure is possible at anytime.