Over Temperature I get a message on my screen that reads ?Over temperature unit is shutting down? It then proceeds to shut down. I can turn it back on and it might play a while but then shutd down again.

Probably a safety feature to keep it from getting too hot. temperatures above a certain level could easily start a fire.
This unit has a temperature control with will turn it of after a certain temperature is reached it also has a timer that will turn it off.
It might also be a malfunction in one of those controls.

clean the whole unit then replace the thermostat

This is normal if your freezer is in good working condition. If your compressor runs constantly then there is a problem. Once the unit reaches the set temperature the compressor shuts down. The set temperature should be between -2 & +2 degree F. The set temperature also depends on how full the freezer is. There will be a time when the freezer like refrigerators will shut down. This is relative to the term, "Frost Free". The unit will shut down for about 10 minutes. This occurs ever 8-10 hours. The heater turns on to defrost your freezer coil. It sounds like you are in good shape.

NEW UNITS HAVE A VISUAL ALARM PRE SET TO KICK ON AT 62 DEGREES OR ABOVE, WHE THE WINE COOLING UNIT READS 62 OR ABOVE IT WILL FLASH "AL" AND THE TEMPERATURE NUMBER THAT FORVED IT TO KICK ON, IT IS JUST A VISUAL ALARM IT WILL NOT TURN UNIT OFF OR STOP IT .

THIS FEATURE WILL SHUT OFF ONCE THE UNIT READS ANY TEMPERATURE BELOW 62 DEGREES.

Possible set is seeing a temperature too hot inside the set, can also be a fan in the unit if it has them it takes very little dust to slow their speed enough (dust on the fan blades).

I am thinking that perhaps the temperature sensor is reading wrong and therefore sending a message to the computer that the car is running too hot. This can happen, my VW presently reads 20 hotter on the guage than a heat gun records at the temp sensor location on the head. If you have access to a heat gun it might be a good idea to check out the actual temperature, but it probably won't hurt to change the sensor.

The other problem that occurs to me is the oil sending sensor. While a temperature sensor won't shut an engine down, the oil sender can. If it is reading a large drop in oil pressure it will shut the engine off. Since oil gets thinner as it gets hot, perhaps a defective sending unit is reading it as too low. Once the oil cools off, it would restart until the temperature gets too high again. I would think that upgrading to a heavier oil might cure the problem. I don't know what you are currently usung but certainly you could go to 10W30 or 10W40 without too much trouble, at least for a test. Hope this helps.

well your CPU centeral processing unit is overheating ..check the fan if its still working.. if its then try to clean the fan take it part and get it clean .

No. However you may be able reset the thermostat to its factory setting.
Turn the thermostat off.
Shut of the gas and water supply to the unit.
Unplug or disconnect the unit from its electrical power source. Disconnect the thermostat from the heater.
Wait approximately 5 to minutes, and then reattach the thermostat wires to the heater.
Turn the water supply on and open the tub faucet to its hottest setting for about a minute.
Turn the faucet off and make sure no water water is flowing anywhere in the house.
Turn the gas supply back on.
Reconnect the thermostat wires to the heater.
Connect or turn the power supply back on.
Wait at least 2 minutes before turning the thermostat power button back on.
After the thermostat power button has be pressed, wait an additional 2 minutes before running water.
Test the heater at this time. Turn the water on at the farthest faucet to its hottest setting. measure the temperature with a cooking thermometer.
If you need to make adjustments to the water temperature, either up down, shut all the faucets off first.
The thermostat should read 100 degrees Fahrenheit when it first starts.
If you are receiving an error massage, consult with the manufacturer.
If the thermostat is reading the correct water temperature but the unit is not operating, there are other issue need to deal with. Let us know if this works or you need further assistance.

this worked for me: just hit the bottom hard with your palm and the top and sides, not the front or back. After 3 hits, the date screen came back on and it was fixed. This was after the other two solutions I found on this site failed, namely pushing the shutter down before the message comes on or blowing into the camera slot with the memory card removed.