The red light will not come on Sometimes the temperature is correct and other times its to low. Any suggestions?

Depends on how the system is supposed to work. I am not familiar with them.
If there is a device to warn of low coolant level it might be a resistance-based device or a small float with embedded magnet and a reed switch which is a common way of achieving the result - sometimes the float will stick...

If there is a coolant temperature switch, these are usually very reliable and like a switch it is either on or off. Sometimes these are fitted in pairs to indicate if the engine is running too cool or too hot.

A switch is unlikely if the engine has computer control - in this case the unit, the temperature transmitter, sender or sensor is a thermistor or a resistor that has a value that varies with temperature. It will need to have a resistance that falls in a specific range at a specific temperature. In the case of an overheating engine the computer will switch on the light.

I suggest you read the operator's handbook to determine the precise function of the coolant light.

Sounds like the thermostat is stuck open or low anti freeze

Faulty intake air temperature (IAT) sensor

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The flashing red probably means that the charger is working correctly and is indeed charging the batteries. The light should turn green when charging is complete after anything from 1 to 16 hours depending on how this charger works.

Do the following test: Fit the charger with your batteries and connect it to the mains. After 1 hour check if there is a detectable temperature rise in the batteries. You can do this without interrupting the charge cycle by touching the cells with the back of your fingers. If the temperature is still low, let it continue for another 15 hours or so, checking every now & then for any temperature increase. Should the temperature rise more than a few degrees, then stop the charging by removing the charger from the mains. Should the red lamp remain flashing after 16 hours, then I suspect you to have a defective charger.

It tells you that the Temperature out side is below freezing and it comes on when it cold out side. Just to warn that could be freezing places. and sometimes it get Orange too. Hope this helps

you never want the temperature guage at the red, at this time usually something major becomes damaged. Check your coolant level, if low inspect hoses, radiator, waterpump for leaks.

Not certain, but you may be referring to the blue light that indicates when the water temperature in the cooling system is "cold". It's typically blue when the car first starts, then changes color when the water temperature rises. If the light remains blue the water temperature isn't heating up, and you may want to have the cooling system flushed and checked. Depending upon the cars mileage, it may be time to flush the cooling system anyway.

Thermostat is not working properly and needs replacement.

once the slow cooker reaches a temperature set point it shuts off. when the internal temperature drops the thermostat turns on again, otherwise even at a low heat, everything inside would boil away. Hence the term "slow cooker."