Williams P296201 Switch

I have a williams wall furnance 6508632, and the fan low speed will shut off with burner still going then start back up in high speed instead of going to high speed while in low speed , do you think this part is what is going bad or a nother one, it also has limit switch p308600 and fan switch p200200 and limit switch 323379, If this is normal then I will leave it alone.

We are not sure which part, if any, is bad in your situation. If it has been acting this way all along and you are getting heat up as usual it is probably OK. Please check with a local contractor if needed since this kind of problem has to be checked on site. Thank you.