Yes i have a goodman ck42-1c hvac unit and when i turn on the thermostat in the house the outside unit will not come on at all what could be the problem.

SOURCE: Goodman CK60-1C model central AC unit blwing hot air

Clicking sound is the contactor engaging to start the outside unit. Check for a burnt off wire at the contactor. For some reason you are not getting power to the outside unit. If you find a burnt off wire shut off all power to it then remake the connection at the point of the circuit break.

SOURCE: Goodman air conditioner will not turn on outside

When ever you hear a buzzing like you are hearing means one thing one of the fuses on the outside disconnect box is bad. Only getting 1/2 the power. Find the bad fuse and get the same size and will be good to go. ken

SOURCE: I have a Goodman A/C unit. When I turn on the

Does the cpompressor come on if not the sound you here maybe the contactor. Check float switch inside. It is underneath the unit or in front of the air handler. Drain stopped up need to blow out drain. Check outside breakers. possible bad capacitor on unit. Need service tech. Rusty

SOURCE: I have a Goodman air conditioner. My outside unit

If you are sure of the power then ya have a control problem thermostat set correctly? could be open low pressure switch I would call for service. Tom

SOURCE: I have a goodman furnace and ac unit the fan and

Look at the contactor on the condensing unit, remove the low voltage wires to the contactor and turn on the system. If the low voltage fuse doesn't blow, replace the contactor.