Patton PRH11 Buzzer Sounds on HIGH after 2 minutes

the beeping could be caused by the tip switch malfunction. The best thing to do is call for a warrentee replacement @ https://secure.pattonproducts.com/ContactUs.aspx

My Patton PUH682 utility heater from 2011 is otherwise in excellent condition but Auto Safety Shut-Off seems to be a design problem. My overheat sensor quickly shut off the unit when surrounding air was cool. It is inside the bottom of the fan box wired between the on/off potentiometer and heating coils.
I identified it by turning on the heater and watched the metal contacts separate as it tripped. On my unit, the defective overheat sensor is hardwired. Since it was otherwise useless as a heater, I decided to jerry-rig it and hope for the best. I pried back the sheet metal edge of the fan box and wrapped the sensor with electrical tape. Then I took a very small squeezable metal paper clip and lined it with electrical tape. I clamped it over the overheat sensor and it fits perfectly to prevent the metal plates from separating. Now the heater works the way it should. The cable, coils and plug don't overheat on Hot setting and it runs continuously.

May be loose screw in frame, element is old or insulator is worn

These heaters all have safety devises in them some for tip over and all for over heating. Your problem sounds as if it has a bad over heating sensor. These will have two wires one in one out, it is usually a positive wire. When they sense that the heater is to hot it shuts it down upon cooling it allows the heater to turn back on. The tip switch does the same if upright it turns on if tipped it turns it off. They are mechanical and thermal switches and they do go bad. These can be jumped out to trouble shoot the problem but I would not run it with out these safety devices in it.

If it was banged in any way some thing got stuck to it need to inspecked it

I just used an old toothbrush and stuck in in between the grate holes on the front. I Just brushed on and around the sensor really well & it seems to be working fine now.

sounds like u have a safety switch going out try to fin the one thats cutting the unit off try bypassing hem one at a time until it stops and replace it do not leave it bypassed!!!

Either the air entering the heater is to cold and unable to satisfy the thermostat or the contacts inside the thermostat have “welded” together, or other faulty internal wiring which could keep the heater running indefinitely. Take it back to where ever you purchased it from or throw it away, that could be a fire hazard.

Hope this helps.

This heater was the determined cause of my total loss house fire. I thought the company would atleast help me find some where else to live, they seem to care. But, as of lately they are doing nothing.
I am told this heater-(prh11- 2008 model- purchased at walmart for about $27.00)
- Had wiring that wasn't up to standards
-1/10,000 units cause fires
-something wrong with the heating element-stops working
- wouldn't stand level
-heating coils
-fires like mine have happened to a few other people
This came directly from a person at Jarden corporation(aka patton-sunbeam)