Pella windows

hi,
Cant get the top window to open on some pella double hung windows.
Any advice?

Can’t get it to slide down or can’t get it to tilt in?

Cant get it to tilt in.

Does the top window slide down ? If so , you have to tilt in the bottom window first then pull the top window down about 6 inches and then look for the clips on the top , press in and tilt in . You have to be really careful that the top pane doesn’t slam in the bottom pane . You’ll need an extra set of hands for sure

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Yea, and be weary of some of the older ProLines, make sure you release and tilt the sashes straight… if not this can put uneven pressure on these air tight jambs, cause the glass to bow and crack. Be mindful of the sound and resistance of the bottom sash retaining pins as you tilt in… if you feel resistance or start hearing hard squeaking, creeking sounds, put it back up…