Got hot and shut off - Coleman Powermate 27 Gallon Air Compressor

Shutting Down and Gas Hot Water Heater
There are four steps to properly shutting down a gas hot water heater:
(1) For working on water pipes or draining the tank, turn the gas valve control to pilot.
(2) For any other work on the hot water heater, turn the gas completely off.
(3) Cool down the water inside of the tank.
(4) Shut off the cold water supply to the hot water tank.
(5) Open a hot water faucet somewhere, (preferably above) in the house.
Step One - Setting a Gas Valve On 'Pilot'

The water heater gas valve is located toward the bottom of your water heater just above the burner chamber. On the top of the gas valve that has various settings on it. The three main settings are 'OFF', 'Pilot' and 'ON'.
Turning the dial to 'Pilot' will shut the gas off to the burner without shutting off the pilot light. This setting can save you the trouble of having to light the pilot again when you are done. This setting should not be used if you are doing any work on the burner assembly or the gas line. It is suitable to use when you are draining the tank or working on the water lines.
Step Two - Turning the Gas OFF

The safest thing to do whenever you work on your gas hot water heater. Leaking gas can explode and is quite dangerous.
First turn the dial on the gas valve to 'OFF'. Turning the gas valve to 'OFF' does not completely shut off the gas. There is a ball valve on the gas piping next to the water heater. This valve should be turned 90 degrees until the handle is perpendicular to the pipe.
With the gas valve shut off, the gas is completely turned off and the water heater is safe to work on.
Step Three - Cool Down the Water
This is an important step. Water that is directly out of the gas hot water tank can be very hot and scald or burn you. Run and considerable amount of hot water through one of the fixtures until the water is just warm. Do not mix it with cold water, run it pure hot. The cold water running into the tank will dilute the hot water and reduce the temperature.
After the water has cooled down, it is safest to work on the water heater.
Step Four - Shut Off the Cold Water Supply
Do not shut the water off if you have not turned the gas going into your gas hot water heater off. If the water continues to heat inside the water heater after the water is shut off the heater will build up too much pressure. If you are sure the water is off, you can turn off the cold water supply.
Step Five - Open a Hot Water Faucet
Opening a faucet will prevent the water heater from developing an air lock. Any attempts to drain the water tank will fail if a faucet is not open to provide air.
It should now be safe to work on your hot water tank.
Step Five - Draining a Hot Water Tank
Most repairs on a gas hot water tank can be made without draining the tank. There are, however a few exceptions that must be noted.
Removing or replacing a gas valve will require the tank to be drained. This part threads directly into the lower portion of the tank. Another activity that requires an empty tank is flushing out the sediment. Clearing out water heater sediment on a annual or semi-annual program is a good maintenance program. Draining the tank is a chore, but the steps required are also required for the sediment flush, so it is really not any extra work.

I would check that there is not a problem with the power supply to the set. If it gets hot and shuts of the power may be faulty and could be causing component failure.

There is an obstruction after the shut off to the hot water hose that feeds the washer. Shut off the hot water, disconnect the hot water hose from the washer, and hold the end in the washer tub. Open the hot water shut off. If now water comes out the problem is in the hose. Replace or clear obstruction. Make sure washer at hose end is in place before reconnecting to washer.

If how water flows, inspect the input hose connection to the washer. Some have a screen filter that my be clogged with sediment or other debris. Clean and try again.

If still no hot water, there is likely a problem with the hot water solenoid valve inside the washer itself. You'll have to remove and probably replace the valve or coil (or assembly).

This is something you will have to contact rheem about due to the fact you don't have a fault code

Check the aerator to see if its full of sediment.  Also check the shut off valve to see if the hot water supply line is opened all the way.

the valve where they mix is blocked on the hot side, or the shut off is almost shut off. check the shut off first.

if it only shut's down when it gets hot and won't start until it cools down it sounds like the ignition module is getting hot and breaking down

a tankleess water heater doen's have a piliot? but check the vent outside make sure nothing is blocking it, if it detects the exhaust thru the cold air intake it will shut off and over heat, other then that it would have to be the control board

An obstruction in the hot water-inlet valve may mean that it's no longer able to shut off and should be replaced. Good luck !