I Convert my Frigidare Dryer to LP, I opened the window totally, but the flame is still yellow.
How can I fix it?

Did you adjust both the orifice and the regulator?

Look at these manuals: https://dl.dropbox.com/u/8010163/Frigidaire%205.75%20cuft%20Gas%20Electric%20Dryer% 20Good%20and%20Better%20Models.pdf
https://dl.dropbox.com/u/8010163/Frigidaire%20Affinity%20Dryer%20Service%20Manual.p df
https://dl.dropbox.com/u/8010163/Frigidaire%20Dryers%20Gas%20and%20Electric%20Elect ronic%20Controls%20.pdf
There is a way to adjust the flame on the dryer. You are going to have to look closely at the valve to see how to do this or close down the supply some.

Yes I change the orifice and opened regulator at maximum

Look at these manuals: https://dl.dropbox.com/u/8010163/Frigidaire%205.75%20cuft%20Gas%20Electric%20Dryer% 20Good%20and%20Better%20Models.pdf
https://dl.dropbox.com/u/8010163/Frigidaire%20Affinity%20Dryer%20Service%20Manual.p df
https://dl.dropbox.com/u/8010163/Frigidaire%20Dryers%20Gas%20and%20Electric%20Elect ronic%20Controls%20.pdf
There is a way to adjust the flame on the dryer. You are going to have to look closely at the valve to see how to do this or close down the supply some.

Thank you for the manual and for the tip - I will try it

The spring pressure on the regulator is increased and the orifice is smaller for LP. On some regulators there is a cap on top that is turned upside down for LP in order to increase spring pressure.