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Thermostat (little dime size heat measuring disk with heatproof wires) is probably a little too close to the heat source. Try to bend it back a couple thousands of an inch at a time and see if it goes longer.
I have a presto heater what i did was tape the buzzer botton up. if the heater fall over the buzzer will not go off because it is taped shut. the problem is your buzzer is sticken. the heater works fine once you shut the botton shut. to eliminate the buzzer.
I almost threw my heater out! I cleaned this morning with Window Cleaner and it works just fine now. It was just dust. I cleaned the round metal area not the coils.
Hope this helps.
Emailed Presto about replacing the buzzer and here is the answer I got:
is no such part.
Buzzer sounds when heater:
- is tipped
- rests uneven on floor
- is too close to furniture or wall
- has too much dust on parabolic dish
The most common reason is that the parabolic dish is dusty.
To clean the heater:
1. Unplug the heater and clean it when it is cool
2. Spray a cloth with an all-purpose cleaner such as 409
3. Wrap the cloth around a long handle such as a wooden spoon
4. Wipe between the grate from the outer edge to the center
If you have further questions, please let me know. Or call us at
1-800-877-0441 Monday through Friday 8:00 a.m. to 4:30 p.m. Central
Heat pumps provide good heat until the tempurature drops below 35-40 degrees. After that there isn't much heat to extract from the outside air and then either the gas furnace kicks in or the electric heat strip does the job of heating the air. if you have heat strips, I would check your breakers in your panel and sometimes there are a couple of breakers right on the air handler or furnace. The ones that will be for your heat strip are 220v and will be twice as wide as your normal 110v breakers . Please don't trust a visual inspection as they can look like they are in the "on" position but are indeed tripped. Turn them all they way off and then back on. If the beakers check out you may have an open cicuit in the heat strips themselves and you will need to have a qualified HVAC tech look at your furnace to repair it.
If your furnace is a "duel fuel" and uses natural or LP gas for back up heat then your ten year old rheem probably needs a good maintenance by a qualified service tech. There is a flame sensor to clean, ignitor to check (replaces the old school pilots), burners to clean flue connections to check and much more. ALL manufacturers of any heating apliance recommend yearly maintenance. Most companies offer something for around 100 bucks. I hope this helps.
for those of you that want to void your warranty or just dont care there is a fix for the buzzer problem.
If you take the three screwws in the back and the one in the top next to the heat selector switch the steel dish portion will come away from the dish back. located on the bottem of the back inside panel there is a small disk looking tilt switch that has one red wire on one end and on the other a white and two black wires. remove this component and all wires from it. take all the wires from it and remove the ends exposing solid wire. for this modification you will need a philips driver wire stripper and cutter and one medium size wire nut available at almost any hardware store. take all the loose wires and wrap them together and place the wire nut on them. be sure to tuck the wire someplace away from the dish portion when going back together. put the unit back together and plug it in and "presto" you have no anoying buzzer anymore and the heater wont go on and off like it used to. this seems to be a comen problem due to lack of insulation and poor design on heatdishes part. hope this solved your problem
I rewired my heat dish. I UNPLUGGED THE HEAT DISH. I loosened the three screws on the back and removed them. Then I unclipped the dish at the bottom. The dish should be loose and the bottom section of the dish should be detached from the plastic casing. Look inside the casing at the bottom. There is a red cable attached to the buzzer (it’s the silver metallic piece). Detach the red cable from the buzzer. Now look directly behind the buzzer is a black wire that connects to the circuit next the buzzer. Attach the red cable to the female receptor foot the black cable. Plug it in and it should work fine. This will permantly disable the buzzer, SO YOUR HEATDISSH NOW LOINGER HAS A WARNING SYSYTEM. IF YOU TURN YOUR HEATER OVER THE BUZZER DOES NOT GO OFF, THE BUZZER ALSO INDICATES OVERHEATING OF THE UNIT. SO BE CAREFULL. MAKE SURE THE UNIT IS UNPLUGGED WHEN WORKING ON IT. GOOD LUCK AND BE SAFE