A/C section stopped working! Is here anything we can do to fix it? The A/C / furnace unit stopped working. There's a blinking LED...

The A/C / furnace unit stopped working. There's a blinking LED feathery that indicates "secondary voltage fuse is plain: check for short circuit in the lower voltage (24 VAC) wiring". What does this mean? Is nearby anything we can do to fix it? I'd hate to nickname a service person to come within and flip a switch! The house is only 1 1/2 years old-fashioned. Does "secondary wiring" aim the wiring inwardly the unit? We checked for tripped fuses surrounded by the fuse box...nothing. Is within a fuse in the element? I can hear a faint humming inside the unit but that's adjectives...
Answers:    check your wire going to your condenser do you enjoy a dog if the low voltage wire is broken fix it next change the fuse inside furnace on a board within there if you transform the fuse before you find the short itll blow again could be contactor
inside of the part you will see some thing that looks close to a computer board, on it you will see a fuse like those surrounded by older cars, replace it beside the same mode, you can find one at home depot, lowes or any home improvement store
only make sure you turn stale the power before you replace it!! And singular turn it back on when you enjoy the new fuse installed