Electrical Questions? Ask an Electrician Online.
Hi, I'm Mike G and I'll be assisting you. Yes you can connect both black and blue fan wires to the red but I suggest looking in the switch box for an unconnected black wire. If there is, you can install a fan speed/light control and have separate control of the functions at the switch.
Did you operate the pullchain switch on the fan? I had to ask.
Do you have a 2 wire voltage tester?