Unit turns itself off after a minute - All-Pro K175 Heater

Start with changing the capacitors that look bad on the PS board...I think you will find some that are bulged when you take the cover off, should be a easy and cheap fix

sounds like it maybe going off on a temperature limit switch units getting too hot

The E2 Code, indicates a Sensor or System Failure, But, before calling Haier, try this.
Turn the Master ON/OFF Switch to OFF & unplug the unit for 15 minutes. Then plug the unit back in and turn the Master ON/OFF Switch to ON. Hopefully, the unit's electronics during that 15 minute timeout, have reset itself and reverted back to the original factory settings. If so, it was a false code. If it didn't reset itself, contact Haier Customer Support 1-877-337-363.

Hope this helped you. Please let me know.

CAPS (capacitors) on the power supply board are going bad. TV putting itself into fault protection by turning itself off..... If you can give the model number I can better help you.....

You can try to get it to reset itself by doing the following:
Turn the Master ON/OFF Switch to OFF. Unplug the unit and leave unplugged for 12 - 15 minutes. Then plug the unit back in and turn the Master ON/OFF Switch to ON. Set the controls as you normally do. Hopefully, the 12 - 15 minute timeout, allowed the unit to reset itself.

Generally, this works 90% of the time. I hope it works for you.

My guess is that the fans inside the computer have stopped working, thus leading to the overheating. AMD processors generally run "hot" (50 to 60 degrees Celsius) even with proper fans.

Take your computer to a qualified technician, for a cleaning, and proper trouble-shooting, and repair, before the overheating causes permanent damage.

*********** board needs to be replaced..

The dry board is dead. or "power board."

The first problem with it powering itself off is a battery problem. Your battery is not hold a charge.

The second problem with it powering itself on with the power cord attached is a power cord issue. The unit is suppose to automatically power itself on if a power cord is attached to it. This is Garmin way of turning the unit on when you start your car. Most auto cigarette lighter will cut power if the ignition is off, and restore power when the ignition is on.

Garmin uses this to turn the unit on and off. If the unit was being powered by the the cigarette lighter then it say unit is shutting down in 20 seconds after the power is cut.