heat and a/c not cycling properly

[neomist]

Recently as it has been getting colder, I have started to notice my heater and a/c will not cycle on when I change the temp. It seems to blow cold air for 5-10mins then for no reason finally switch over to blowing heat. Then heat will run for a few mins and the a/c will come back on. I have read the forums on this, some seem to think this is a damper issue, but I am unconvinced due to the sporadic nature of cycling between cool and hot air.

Anyone else experience this issue, if so what was your solution?
I have a 2006 F250 KR.

[neomist]

Please does anyone have any possible solutions?


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[Davey~do]

Have you checked your coolant level by chance? Low level will cause intermittent heat/cold cycles.