Am I able to use a 4 wire fan speed switch for a 3 wire fan?

I have put Black to L and Blue to 1 and Red to 2 and can get high and off, no middle ground.

Is there a remedy to this. I live quite a way from a hardwear store

Looking into answers elsewhere I see more info might help. There are four wires coming out of the bottom of the fan, Black, white, red, blue. The Black wire is also split off to the light. The White wire looks to go only to the light.
I do not know the brand, it was in the house when I moved here.

What make/model is the fan?

That will only work if it is a 2 speed fan, I suspect it will not work in your case.

See:

Ceiling fan pull chain replacement and repair - Ceiling Fans N More

I might consider wiring for High, without switch and use a fan control?

Again we would need to know if it's a two speed fan or three speed fan.

Hi my name is pete and i have a question on how to wire a 4 wire fan stwitch. I have a brown,black, grey, and orange wire. When i took it down "APART" it fell apart. Now i bought a new switch but don't know what wires go where?? Can anybody help me with this? I would greatly appreciate it. i'm 60 yrs old and have a little problem with my eyes but think i could get though this ok. Please help. Thanks
Pete

What make is the fan?

Ceiling fan pull chain replacement and repair - Ceiling Fans N More