AC blows cold...hot....cold...hot.....?

We live in Phoenix. Today's High: 115F Low:95F Our AC will blow cold air for about 10 mins. Then it will start blowing hot for about 5 mins and go back to blowing cold. Is this normal for such high outdoor temperatures or is there something on my unit i need to check? We are able to get our temp down to... show more We live in Phoenix. Today's High: 115F Low:95F
Our AC will blow cold air for about 10 mins. Then it will start blowing hot for about 5 mins and go back to blowing cold.

Is this normal for such high outdoor temperatures or is there something on my unit i need to check?

We are able to get our temp down to about 85F. by that time it's doing hot/cold/hot/cold/hot/cold......

Central AC unit by the house. one intake vent, one output vent. Don't know what info would be helpful.
I think it's a 4 ton unit. the house is under 700sq feet.
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