Eureka as5203 overheats and turns off not clogged

I am not sure about your "Boss", but a lot of vacuums have thermal cut-off switches built into the circuit so if the machine overheats from things like clogged filters/hoses the switch kicks in and kills power. You usually can NOT reset it manually ... you just have to wait until the machine cools down.

It's likely reset has gone bad, The thermal reset is built into the motor. If the reset is bad the only way to fix it is to replace the motor.

The vacuum likely has a clog or restriction causing it to overheat. You may need to replace the filters

The reset button does not have a significant amount of movement in response to pressing to with a paper clip or ball point pen. If the vacuum does not start upon pressing the button, then either the thermal protection circuit is not why the vacuum stopped in the first place or the reason the thermal protection circuit tripped has not been cleared. Quoting from the manual


"Your Riccar vacuum cleaner comes equipped with a Manual Reset Thermal Fuse Protector. This thermal protector is designed to protect your vacuum cleaner from overheating due to a restriction in airflow (i.e. clogged hose, operating the vacuum without a bag). Should this situation occur, the thermal fuse protector will safely shut off the vacuum cleaner to avoid any potential damage. NOTE: To determine it was the thermal fuse protector that turned off your vacuum
cleaner, please refer to the vacuum cleaner's headlight. If the headlight is on while the motor is off, then the thermal fuse protector did safely shut down the motor. If both the headlight and motor are off, then there is some reason other than the thermal protector (i.e. pulled plug) your vacuum is off.
To reset the thermal fuse:
. Unplug the vacuum cleaner

1. Check for problem - over-filled bag, clog in hose, clogged filters, etc.
2. Correct problem
3. Locate "tripped" fuse - the small white button located on the bottom of the back side of the main body (roughly one inch to the right of the left wheel)
4. Using a pencil, paper clip or other pointed object, push the reset button in
5. Plug vacuum cleaner in and resume use"

overheat sensor is bad clean filters and check for clogs

There is a thermal reset in the motor that will shut the motor off if it gets too hot from a clog or clogged filters. It will come back on when it cools down. If it does this try to find a clog somewhere and also replace or clean your filters

There is no reset button it as a Thermal Cut Off



This vacuum cleaner has a special thermostat that protects the cleaner in case of motor overheating. If the cleaner suddenly

shuts off, turn the switch off and unplug the cleaner.

Check the cleaner for a possible source of overheating such as a blocked hose or clogged filters. If these conditions are found, fix

them and wait at least 30 minutes before attempting to use the cleaner. After the 30-minute period, plug the cleaner back in and

turn on the switch. If the cleaner still does not run, then call 1-800-282-2886 for customer assistance
this link below is the manual
http://dl.owneriq.net/b/b7517422-db37-404e-9da2-d898185942e5.pdf

It's either plugged or clogged in the filter, which triggered the internal thermal shut-off. Clean it out and wait thirty minutes and it should work.

Same thing happened to me. I checked the owner's manual and it turns out the Eureka Envirovac has a built-in thermal cut-off switch. So anytime the motor gets too hot, it just shuts down. Most of the time this is because it gets plugged or the filter is too dirty. In my case, the dust basket thingy and filter were clogged beyond belief. Probably would help to clean that more regularly in hindsight. Supposedly it will turn back on after the recommended 30 minute wait.

I found the following solution on this website. I have searched for hours and finally found this solution, it works! I HAD the same problem after cleaning the filter mentioned below, it is now working like it was new.

***by maverick_bea***
yes this machine has a thermal protector in it to shut off the machine if it gets to hot, this is normal. if there is no clogs in the hoses or in the machine then you will need to wash the filter at the top of the machine. you will have to remove the dirt cup and at the top you should see a half moon orange, well inside of this piece is the washable filter, clean and let it dry completly before putting back into machine. if this gets dirty and has not been cleaned, you can lose alot of suction. in some cases if this filter is not cleaned it can cause the machine to overheat so bad that it can damage the motor.