I have a comfort zone CZ230ER 7500W electric garage utility heater

Question edited for full 'make model (what it is)'.
Question moved from 'Watts Electrical Supplies' to Comfort Zone.

Manual

https://manuals.plus/comfort-zone/comfort-zone-cz230er-7500-watt-digital-thermostat

Comfort Zone Ceiling-Mounted 7500-Watt Fan-Forced ...

comfortzoneproducts.com https://www.comfortzoneproducts.com > products > ce...
Featuring a ceiling-mount design, this tough commercial heater boasts a heavy gauge steel body that stands up to daily use in poorly insulated areas where ...

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If your Comfort Zone CZ230ER is not cooling down to the setpoint and shutting off, there could be several potential issues causing this problem. Here are a few things to check:

1. Check the air filter: A dirty or clogged air filter can restrict airflow and cause the unit to overheat. Be sure to clean or replace the air filter as needed.
2. Check the thermostat: If the thermostat is faulty, it may not be accurately sensing the temperature in the room, which can prevent the unit from cycling properly. Try replacing the thermostat to see if that resolves the issue.
3. Check for leaks: If the refrigerant level is low due to a leak, the unit may not be able to cool properly. Have a professional inspect the unit for leaks and repair them as needed.
4. Check the compressor: If the compressor is faulty, it may not be able to properly circulate refrigerant through the system, which can prevent the unit from cooling. A professional will need to diagnose and repair any issues with the compressor.
5. Check the fan motor: If the fan motor is not functioning properly, it can prevent the unit from properly circulating air, which can cause it to overheat and shut off prematurely. Check to see if the fan is running smoothly and replace the motor if necessary.

If you are unsure how to perform any of these checks or repairs, it's best to consult a professional HVAC technician.

I hope this helps

https://www.youtube.com/watch?v=4pXdRX140Ic

Thanks

can you return it for another one? call comfort zone for help, and warranty replacements parts.

Likely a tripped limit switch. Need multi meter to test.

get in a qualified electrician to check the installation and to report if it is a warranty problem

Everytime I turn on the CZ heater, the display reads A05 and then it goes away when i set the temp. As far as I can see and feel, I'm not experiencing any issues with the heating, fan, or thermostat or the extension cord running hot. I'm concerned that something could be wrong or unsafe, with Comfort Zone filing for Chapter 7, anyone know who is offering support or a number I can contact?

I would be careful with a electric heater. The fan must not be moving the heat from the elements. Low air flow. It sounds like it is going out on high limit. Please unplug and do not use. You may need a new fan. It would be cheaper purchasing a new heater.

Hope this helped you...Jim

when you first bought the heater even if it wasnt "red" as you say did you get heat from it? now those type of heaters are good when they work. First the heater has 2 settings say low and high now in low the wattage will turn some of the elements partly red the reason you dont see it is because it is fan forced heat on those type heaters which causes the elements to look like they are not red but they are on, only low will do this. Now high will cause all elements to get "red" even while the fan is running. If there is no heat someone needs to bypass switch to see if they work.process of iliminitation.Hope this helps for you.