My dometic ac is reading 32deg F inside temp not allowing ac to work. How do I reset or fix it

SOURCE: Honeywll Chronotherm 3 reading Hold AC

the power to your furnace has been turn off. check the switch at the top of the stairs.

SOURCE: the freezer works fine but top

check to see if freezer is building up ice on back
that will be a automatic defrost problem timer,limit switch,or heater

SOURCE: AC does not cool to the temp as desired

Does the thermostat have a mercury bulb in it, if it does you need to level the thermostat.
When you take the cover off, on the sub base there should be a couple of marks or grooves
One on each side of thermostat, you need to take a level and loosen the screws on the sub base
And with the level completely level align those two marks with the level.
If you don’t have a mercury bulb, then your thermostat may need the heat anticipator adjusted, some you can adjust the bi-metal coil, but I haven’t done that, so I couldn‘t tell you how to do it, or you just have a bad thermostat.