DCM9: Heat complete, replaced (6) F20x25x2, (4) F16x25x2, (2)F20x35x2, (1)F20x25x1, (2)F20x20x2, (1) F20x20x1 filters and replaced (1) AX35, (1) AX32, (1) A48, (2) A55 belts. System 1- Arrived to fuse blown. Ohmd through motors and compressors and could not find reason for blown fuse. Replaced 50amp fuse and tested system, system is now operating within manufacturer specifications. System 5- Fails to heat. In first stage of heating heat sensor opens after 10 seconds of run time. In 2nd stage heat the contactor fails to close while having 24v only letting one leg of power through. System 7- still has a failed compressor diagnosed in previous visit. System 8- still has a failed compressors diagnosed in previous visit System 10- Fails to heat. In first stage there is an open circuit inside of the heat strips that is unrepairable and second stage has been unwired due to previous failures. Will need to replace heat strips for system to heat. All other systems are fully functional