Question about Reddy Heater-170,000 BTU Kerosene Deluxe

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Heater runs hot for a few minutes then stops heating

Heater runs for 10 minutes then stops. Thermostat will work if adjusted to a lower temperature setting. It has very low hours and is less then a year old when the problem started. blower runs but shuts off flame.

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I would say from what you have described your problem is a bad thermostat heat sensor (you may have to replace the whole thermostat on this model!) This is a very common problem for this unit!
Please rate my sesponse!
THANK YOU

Posted on Jan 14, 2009

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Posted on Jan 02, 2017

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Heat stopped working


There are several possible reasons as to why you are not getting any heat in your vehicle. 1) Low coolant level; check coolant level in radiator/reservoir to make sure that it is within operating range (check with engine cold). 2) Improperly operating thermostat. If your thermostat is stuck in the open position, the engine will not reach operating temperature and the engine coolant will provide little or no heat to the car heater. Check your coolant temperature gauge on the dash to make sure that it is the normal operating range. The thermostat will need replacing if the engine temperature is still in the low range after 10 minutes, or so, of running. 3) Plugged heater core. After engine has warmed up, place your hands on the two smaller coolant hoses that lead into the firewall/heater. Both hoses should be hot (the inlet slightly hotter than the outlet) If one hose is hot and the other is only warm or cold, than the heater core is likely plugged. I would recommend a cooling system flush in this case. 4) The heater control valve is not open. The heater control valve is a valve located in one of the smaller coolant hoses leading to the firewall/heater core. It is usually cable operated, but may also be operated by a vacuum motor. Make sure valve is moving when the temperature lever or knob on your instrument panel is moved from cold to hot. If it does not move, and it is cable actuated, ensure that cable is connected to the valve arm and dash control lever. If it is vacuum controlled check small vacuum hose for kinks and leaks. Remove vacuum hose from valve and check for vacuum when heater control is moved from cold to hot. If vacuum is not present, there is a problem with the heater control (possibly a vacuum leak under the instrument panel or at the temperature control).

Feb 13, 2014 | TechShade - M923 Truck Parts & Accessories

1 Answer

Poor heat inside car. some heat when fan on low but when fanspeed is increased heat is lost.


Hello,
It sounds like you have an issue with the thermostat, or blockage in your cooling system.
Here's a few things you can do to check both.
How to test the thermostat in most vehicles;
Make sure the heater is off, start the engine and let it run for 6 to 8 minutes, ( this will allow the
engine to reach, " normal operating temperature "), from the inside of the vehicle turn the heater
temperature on high and turn the fan speed on high.
1. Listen very closely for a click sound from the engine, ( most thermostats make a click when
they open )
2. Watch your temperature guage, it should begin to lower as the coolant starts to circulate.
3. Usually within a few minutes the radiator fan will kick.

If the thermostat appears to be working, do the following.
Turn the engine off. While it's still hot, carefully reach back behind the engine, at the firewall, you should see 2 hoses beside each other, ( around 1 inch in diameter ), feel both of these hoses. If they're both hot then the coolant is circulating fine, but if only one of them are hot, that means something is blocking the coolant from running through the heater core.
If you have blockage, the best thing you can do is have the cooling system flushed and refilled.

I hope this helps you.

Feb 16, 2011 | 2002 Dodge Neon

1 Answer

Hi...I have a Whirlpool water heater and the water only stays hot for a few minutes. How do I adjust the temperature or settings so that I can have hot water all the way through the shower instead of...


I am guessing this is an ele water heater and the temp setting are not the problem.
Problem: Not enough hot water or water temperature too low. When the top of the tank is hot the upper thermostat removes power from the upper heating element and transfers the power to the lower thermostat and heating element. If the lower thermostat is defective, then the lower portion of the tank will not be heated and the supply will be greatly reduced.
Check for power at the upper thermostat terminals where the power is sent to the lower thermostat and heating element. If there is no power then the upper thermostat should be replaced. If there is power then check for power at the lower heating element. If there is no power at the lower heating element then replace the lower thermostat.
If there is power to the lower heating element then it should be getting hot. If it is not, replace it. Another possibility is a broken dip tube. Check for a broken dip tube and replace if necessary.

The dip tub is located under the fitting where the hot water comes out.

Feb 03, 2011 | Whirlpool Water Heaters

1 Answer

Rheem 49 gal model 81V400B - hot water lasting only 5-10 minutes then takes an hour to heat back up.


Ordinary tank-type electric water heaters are fully repairable by homeowner.

A) Basic info on Rheem
Rheem electric water heater website:
http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/
Find age of Rheem: look 2nd and 3rd digit of serial number, for example 06 is 2006

B) Water heater has some hot water.
That says certain things: upper element is working, water heater electricity is working, reset button is not tripped, and heater is not experiencing run-away overheating event.
http://waterheatertimer.org/How-it-works.html

C) That leaves 4 suspects that cause lower amount of hot water.

1) TP valve is running hot water out of tank -or- leaking faucet is running hot water out of tank.
Check for leaks
http://waterheatertimer.org/How-to-replace-TP-valve.html

2) Lower element is burned out.
Test lower element using inexpensive multi-meter from Home Depot.
http://waterheatertimer.org/How-to-test-water-heater-element.html
Replace element with same wattage shown on label, and clean out sediment:
http://waterheatertimer.org/How-to-clean-sediment-out-of-electric-water-heater.html
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

2) Upper or lower thermostat is bad.
Replace both thermostats for about $25.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

3) Burned or shorted wire located between upper and lower sections of tank.
Turn off power. Open covers on side of tank. Remove insulation. Inspect parts for signs of high heat and burning. Especially check lower element. Tighten any loose wires. Replace part that shows signs of burning.
Put insulation and cover back over thermostats so cooler outside temperature doesn't cause thermostat to misread tank temperature.
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 03, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

2 Answers

I dont have any heat and i need to know how to replace the hearter core, however the windows aren't fogging up so maybe its the thermostat


the only way you should have to replace a heater core is if it leaks or gets plugged up. When motor is hot feel the two hoses that go to the heater core. one should be fairly hot and the other should be the same but if one is just warm then follow hose and locate a flow valve and check for operation. OPening and closing with control hot /cold knob. Check coolant level in radiator while cold as well as fill reservoir to full when cold. Also remove radiator cap when cold and warm truck and check for flow of coolant. if lower radiator hose is hot hot hot and upper hose is cool then thermostat may not be opening properly, or thermostat is stuck open not building heat. You didnt mention if truck was overheating?? If its not i'd check for the flow valve operation, if it is i'd make sure coolant levels are full and waterpump is working.

Feb 03, 2011 | 1994 Chevrolet Astro

1 Answer

Not getting enough hot water


You posted under Rheem 40 gallon tank-type electric water heater.

You have some hot water so that says specific things:
-Upper element is working.
-Electricity to water heater and circuit breaker are good
-You don't report a leak so TP valve is good
-You are not experiencing overheating event
-ECO reset button is not tripped
-Insulation and covers are in place so thermostat not exposed to cooler temperatures that would cause thermostat to misread temperature and cause overheating.

That leaves 6 suspects listed in order of difficulty:
1) Leaking faucet or broken water line that is running hot water all the time and tank cannot keep up.

2) Thermostats set too low. Turn power OFF, open covers and check each thermostat.
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html

3) Loose screw, loose wire at upper thermostat, lower thermostat, or lower element. Turn power OFF and tighten screws, and look for signs of high heat and burning, especially on lower element.

4) Upper or lower thermostat. Replace both thermostats for $28 and see if that corrects problem.
Parts available at home center, hardware, or plumbing supply
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

5) Defective wire between upper and lower sections of tank: If this is the case, and water heater has 2" foam insulation, then tank usually replaced since insulation is too dense to drop another wire. Call for manufacturer for warranty information. Do a full troubleshoot using multimeter.
http://waterheatertimer.org/Water-heater-manufacturers.html
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

6) Lower element is burned out. Test lower element. Replace lower element. Rheem elements are 4500 Watts and are available at home center, hardware, or plumbing supply
http://waterheatertimer.org/How-to-test-water-heater-element.html
http://waterheatertimer.org/How-to-replace-element-and-clean-sediment-out-of-electric-water-heater.html

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jan 23, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Brand new heater seems to run out of hot water when ran for awhile and seems to take long to recover. also is it supposed to be noisy when running it almosy sounds like water running but its not


You have some hot water so that says specific things:
-Upper element is working.
-Electricity to water heater and circuit breaker are good
-You don't report a leak so TP valve is good
-You are not experiencing overheating event
-ECO reset button is not tripped
-Insulation and covers are in place so thermostat not exposed to cooler temperatures that would cause thermostat to misread temperature and cause overheating.

That leaves 6 suspects listed in order of ease:
1) Leaking faucet or broken water line that is running hot water all the time and tank cannot keep up.

2) Thermostats set too low. Turn power OFF, open covers and check each thermostat setting.
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html

3) Loose screw or loose wire at upper thermostat, lower thermostat, or lower element. Turn power OFF and tighten screws, and look for signs of high heat and burning, especially on lower element.

4) Upper or lower thermostat is bad. Replace both thermostats for $28 and see if that corrects problem.
Parts available at home center, hardware, or plumbing supply
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

5) Defective wire between upper and lower sections of tank: If this is the case, and water heater has 2" foam insulation, then tank usually replaced since insulation is too dense to drop another wire. Call for manufacturer for warranty information. Do a full troubleshoot using multimeter.
http://waterheatertimer.org/Water-heater-manufacturers.html
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

6) Lower element is burned out. Test lower element. Replace lower element. Rheem elements are 4500 Watts and are available at home center, hardware, or plumbing supply
http://waterheatertimer.org/How-to-test-water-heater-element.html
http://waterheatertimer.org/How-to-replace-element-and-clean-sediment-out-of-electric-water-heater.html

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jan 22, 2011 | Rheem 80 GAL ELEC TALL Water Heater 6YR SC...

2 Answers

Rheem 83xr52-2 50 gal residential water heater. Water temp was low. I cut power at electric panel, removed upper panel on water heater, turned up thermostat, replaced panel and switched power back on at...


You can open the top up again. I would not turn the temp higher than 130 degrees, maximum. However, there should be above the thermostat a red button. This is where the power wires connect to the thermostats and heating elements. Sometimes this button needs to be reset, press it and discern if you hear a click sound. This means that the high temperature safety switch has tripped open and you had to manually "reset" it. There are two thermostats by the way. The water heater usually works this way. There are two thermostats and two heaters. The upper tank heater turns on first and it heats the top half of the tank. Then when the thermostat above is satisfied it then allows the bottom heater to come on and heat the bottom half of the tank. You might want to set the bottom heater thermostat as well. This is made this way because it is actually faster and more efficient to heat the top half first and the bottom half secondly. Try this first with the reset button. We could check voltages, but that requires a level of knowledge and safety that I am not sure that you are comfortable with. Pictures of the upper and lower thermostats and connections will help if the "reset" does not do the trick. By the way, not meaning or implying anything, but did you move the thermostat in the right direction? Sometimes the dials can be confusing.

Nov 28, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Honeywell thermostat not lowering temperature


remove batteries let sit a few minutes reinstall.
if still bad replace they are not servicable

Oct 28, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

Whirlpool temp control on electric water tank


Most electric water heaters have 2 heaters - an upper and a lower, each with it's own thermostat. These are readily accessible by removing the screw covers on the side of the tank. Careful - the thermostats have 240VAC on the terminal screws (unless you have a small 120VAC heater) if the circuit breaker or fuses feeding the heater are still on - turn them off before proceeding. After removing the two screw covers and pulling back the insulation you will see temperature (screw) adjustments for the upper and lower thermostats, with a temperature indicating pointer attached to each screw. Set both thermostats to 125 degrees or so. Push the insulation back in place, replace the covers and turn the circuit breaker back on that feeds the water heater. You should have warm water within 15 minutes and hot water within a hour or so.

If the water still does not heat, then you have to troubleshoot to find the problem. With a voltmeter determine if 240VAC is actually getting to the water heater. Remember, the upper element has priority over the lower element, and if the water is cold, the upper element will try to turn on and this locks out the lower element (only one element is allowed to heat at any given time). The lower element comes on ONLY after the upper thermostat is satisfied. Therefore if the upper heating element is burned out you will never get any hot water. If you suspect this, TURN OFF THE POWER TO THE HEATER and take a resistance check of the upper element.

Nov 16, 2008 | Water Water Heaters

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