Hi Joe,
Mine is always very nice & cold, and it seems to work equally well on either propane or 120 VAC.
Can you turn-down the temperature on the control panel? How hot is it there in central California? Is it adequately cold using the Propane setting?
Eagle5
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2019 Minnie Winnie 22M on an E-450 frame
its been like this since i bought it. On 120 it wont cool right and the temperature control is a little slide on the side of fin kinda stupid way of doing things.