How do I open my PRH11 heater to clean the senser?

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

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.

try looking at the air filter see if this is blocked, reset overheat button press red top check if fan on the flue is running , check if flame senser is clean or conection is loose , see if that helps

check out thermocouple if fitted or the flame senser might need cleaning or check connection of senser

Hi clean the flame senser blow the dust out of the heater check the fan switch might be dusty jump out pressure switch see if that helps

There is a round sensor under the heating elements which sets off the alarm when it thinks it is overheating on the PRH11. Unfortunately, a dirty sensor will fool it into reacting like it is overheated. I cleaned the sensor which was dark and revealed it to be a lighter goldish maybe brass in its original color. If your sensor is dark, it will continue to trip the alarm for overheating and will need to be replaced. If you were lucky like I was and can clean it, the problem should be resolved and it will operate like normal until it gets dirty again. This procedure lasted for 3 days and I had to clean it again. I believe I left the dirt on too long and now my sensor has tarnished plus I live in a rural area with significant dust requiring this recleaning every few days. I only used a damp paper towel with water to clean. Cleaning may work better with alcohol or a tarnish removal solution.

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)