Keeps blowing 3 Amp Fuse on Control Panel.
I Have A Carrier (58gsc)upflow Furnace & A/c Unit, Which Is 18 Years Old.
When I Tried To Turn The Heater On , Only Blower Came On & Would Not Turn Off Unless Disconnected From Electricity.
Replaced Sofar Control Unit, Thermostat,transformer Was Blown,& Finally The Limit Switch.
When I Disconnect The Limit Switch The Fuse On Control Unit Will Not Blow.
I Tried Disconnecting Wires One By One ,the 3 Amp Fuse Kepps Blowing, Only With Limit Switch Wire Disconnected It Stops Blowing The Fuse.
Please If Any Body Can Help, Give Advise. Thanks
