Flame rollout switch carrier

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HH18HA416 Bryant Carrier Furnace Rollout Switch

The Bryant, Carrier furnace rollout switch HH18HA416 is a brand new Bryant Carrier Factory Authorized part that comes in a sealed factory authorized parts bag. This rollout temperature switch is used in over 2000 Bryant, Carrier furnaces. This rollout temperature switch replaces old part numbers: HH18HA215, HH18HA216, and 95-314679. Same Business Day Fast Shipping!

2 in stock

SKU: BryantCarrierLimitHH18HA416Categories: Bryant Carrier Limits Rollouts, Bryant Furnace Parts, Carrier Furnace Parts, Furnace Parts, Limits & Rollout SwitchesTags: Bryant, Carrier


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  • The HH18HA416 Bryant Carrier Furnace Rollout Switch is a brand new Bryant Carrier Factory Authorized part that comes in a sealed factory authorized parts bag.
  • The HH18HA416 Bryant Carrier Furnace Rollout Switch is used in over 2000 Bryant, Carrier furnaces.
  • This rollout temperature switch replaces old part numbers: HH18HA215, HH18HA216, and 95-314679.
  • The HH18HA416 Bryant Carrier Furnace Rollout Switch opens when it senses a temperature of 215 degrees F.
  • The HH18HA416 furnace rollout switch has a manual reset button. The HH18HA416 furnace rollout switch can be manually reset by pressing the middle button down.
  • FYI:*Please remember to get your furnace checked out by a qualified heating & air conditioning technician if your rollout switch has been tripped. You could possibly have a leak in your heat exchanger, a stopped-up heat exchanger or a stopped up vent. This could be a Carbon Monoxide producing condition. We do not want to see any of you get sick or hurt!
  • Please send us your furnace’s product number if you would like for us to use our Bryant Carrier program to look up parts and see what the recommended rollout switch or part is for your furnace. Our email address is: [email protected]
  • We Would Love to help you out and Have Your Business!

HH18HA416 Bryant Carrier Furnace Rollout Switch

Additional information

Weight1.0 lbs
Dimensions6 × 4 × 5 in

Related products

Sours: https://arnoldservice.com/product/hh18ha416-bryant-carrier-furnace-rollout-switch/

As much as modern heating furnaces are a blessing to homeowners and renters, allowing us to “set it and forget it”, they also come with their own set of potential problems. Because they are situated inside the home, there is always the possibility of dangerous flue gases getting into our living space if certain issues should arise. 

Fortunately, modern technology has kept pace with the development of furnaces and has provided built-in safety devices to alert us to a situation that could threaten the health of the inhabitants of our home.

One of these devices is the Flame Rollout Switch, also called a flame roll out switch. Either works. 

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What is a Flame Rollout Switch? How Does it Work?

When the furnace begins a heat cycle, a draft inducer fan starts pulling air through the furnace and out the flue. That’s the humming you hear coming from your furnace when the thermostat first calls for heat and before the furnace fires up.

After 15 to 45 seconds, it varies by furnace model, the gas burners ignite with a “whoosh,” and the flames are drawn by this draft into the heat exchanger. After another minute or so, the main blower turns on and begins drawing air from your rooms through cold air returns. The air passes over the very hot heat exchanger, and heat from the combustion gases is transferred into the air. Heated air is then pushed back through the supply registers (vents) in each room or zone. 

Flame rollout is when some of the burner flames come backwards, or “roll out” of the heat exchanger of your furnace. In this situation, rather than just heating the heat exchanger in the heart of your furnace, stray flames are now heating the area where important control components are located behind the burners.

If this situation were to continue very long, internal furnace components such as wiring and the control board could be destroyed. If unchecked, a fire hazard could develop.

Here’s where the flame rollout switch enters the picture.

How does it work? The flame rollout switch is a safety device that will detect the presence of flame rollout and shut off the gas valve. This will, of course, cause the furnace to stop firing. The draft inducer fan might continue to run, and the main blower should run until the built-up heat inside the furnace is disseminated. But there will be no more flames causing potential damage and danger. The furnace will cool down and not start up again as long as the flame rollout switch is tripped.

Can I bypass a flame rollout switch? You shouldn’t because it performs a safety function to maintain your equipment in good condition and to protect your home and property.

Is it safe to just reset the flame rollout switch? Probably once or twice, and if the problem exists, the switch should do its job.

We give brief answers to those questions because complete answers to each are offered on separate pages of Pick HVAC. See Related Topics on this page to locate the articles with the answers.

What Can Cause a Flame Roll Out Switch to Trip?

There are several things that can cause flame rollout and the flame rollout switch to trip. They all have something to do with the interruption of a smooth draft passing over the flames, through the heat exchanger and out the flue. Here are some of them: 

  • Buildup of soot. This could be in the heat exchanger itself or in the flue. Soot buildup is usually caused by poor combustion and sooty flames instead of nice clean, blue flames. Excessive soot buildup can eventually block enough of the gases from traveling through the system to cause them to back up into the exchanger and combustion box where the burners are located. When this happens, flame rollout occurs.
  • Blocked Flue. Whether your furnace sends its exhaust gases through a brick chimney, a metal pipe, or a plastic pipe, they can become blocked – especially during the summer months when the furnace is idle and there is no heat going through it. Common blockages include such things as:

An insect, bird or animal nest, a dead animal, or even a buildup of acorns or other nuts that some animal has stashed there.

Another way the flue can become blocked is if the flue cap is resting directly down on top of the pipe or chimney instead of above it. Rather than preventing rain and/or snow from coming down the flue, the cap may be preventing flue gases from going up the flue.

And there’s another possible reason. In wintry climates, snow and ice can surround and cover a flue vent, though the heat in the exhaust usually melts it fairly quickly.

  • Blocked tube in the heat exchanger. This can occur if a large amount of nest material or other debris comes down the flue and actually gets inside the heat exchanger. It might also be caused by a buildup of rust flakes, as sometimes metal flue pipes and heat exchangers rust when they get older. Some heat exchangers have polypropylene liners. In defective units, the liner separates from the metal, and this problem can block the heat exchanger too. These issues might only affect one or two of the burners in your furnace (most have from 2 to 5 burners), but it could be enough to cause flame rollout in the ones that are blocked.
  • Cracked or defective heat exchanger. Normally, when the blower turns on that sends warm air through your registers, it blows air past – as in over and around - the heat exchanger. The exchanger tubes or chambers are sealed so that the burning gases only pass through them to the flue. If there is a crack, a hole, or a defect that allows some of the blower air to get inside the heat exchanger, it can push backwards on the gas flames and cause rollout. This condition can also result in the dangerous situation of flue gases getting into your indoor air supply.
  • A bad flame sensor switch: If genuine flame rollout has been ruled out but the switch keeps tripping, it could be bad. It’s not a common problem. However, if it has been determined that the switch is bad, you can DIY replace it for under $50. A quick search of parts suppliers shows generic switches for under $10 while OEM Rheem and Lennox switches cost $35 to $45. Disconnecting the bad switch, installing and securing the new switch are pretty easy tasks.

Where is the Flame Roll Out Switch on a Furnace?

The flame rollout switch (some furnaces have more than one) is located inside your furnace, behind the cover panel – usually the upper panel on an upright furnace. It will be mounted slightly above and behind the burners, so that if flame rollout occurs, it will sense the excess heat, operate (trip), and shut off the gas. The flame rollout switch in most furnaces may be manually reset, but if the reason it tripped is not addressed, it will trip again. See our page on Is it Safe to Reset the Rollout Switch? 

What Are the Signs of Flame Rollout?

How do I know if my flame rollout switch is bad?

The average homeowner will usually not get into trying to figure out what the problem is if the furnace stops putting out heat. For most, it’s time to call the local HVAC company to send out a technician. 

However – if you are somewhat handy and like to see if you can fix it yourself, there are a few things that could indicate that flame rollout is the reason you have no heat. Here are the most common: 

  • Button on the switch is popped out. Some, but not all, flame rollout switches are “one-time” switches. Once they trip, you have to replace them. Many other rollout switches have a button in the center that pops out when it’s tripped. To reset it, just push it back in. Caution: If the flame rollout switch trips a second time, it’s time to call in a trained technician to diagnose and repair whatever is causing it to trip. Do not, under any circumstances, bypass this switch!
  • Blower and/or inducer fan running, but nothing else happening. This was probably caused by either an overheating or flame rollout situation, which caused the gas valve to be shut off.
  • Evidence of burns or discoloration. This would be behind the cover panel, but outside of the furnace combustion chamber. In a high-efficiency furnace, there are sometimes plastic components because the exhaust temperature is low. These especially may have been burned or melted before the flame rollout switch tripped.
  • Control board blinking an error code. In the removable panel, there is usually a small, round window through which you can see the control board. It has a light on it that blinks a specified number of times for each condition that shuts a furnace down. There should be a sticker or card inside the cover panel or on the control board itself to tell what the codes are indicating.
  • Visually seeing the flames rollout.  Flame rollout is an observable event with the front panel removed. Normally, the flames from the burners are nicely blue, indicating complete combustion, and are steadily drawn into the heat exchanger when burning. Flame rollout will look like the flames are pulsating, bouncing, or being blown back toward you as you observe them burning. They might also have a lot of yellow mixed in with the blue.


The flame rollout switch is one of a few safety devices that are designed to signal a problem with your furnace and to prevent serious damage to a fairly expensive piece of equipment in your home. While it’s always good to know what these devices are and how they operate, repairing them is usually not an option, since they are electronic. 

The best way to avoid having any of them trip is to have a routine checkup of your furnace yearly – before the heating season after the furnace has sat idle for several months is a good time. This way, you can be fairly confident that you will have a warm and worry-free winter without having to make that middle of the night call to your HVAC technician.

Sours: https://www.pickhvac.com/faq/flame-roll-out-switch/
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About Us

Welcome to Shortys HVAC Supplies. We are located on the South West side of Indianapolis, IN. Our purpose is to provide Original Equipment Manufacturer parts for the repair and maintenance upkeep of furnaces, air conditioners, ventilation systems and pumps to the general public as well as contractors and commercial building maintenance staff.

We sell brand new OEM parts for most manufacturers such as Carrier, Bryant, Payne, Lennox, Armstrong Aire, Ducane, Trane, American Standard, Heil, Tempstar, Nordyne, Goodman, Rheem, Ruud, York, Coleman, Modine, Reznor, Armstrong Pumps, Bell and Gossett pumps, Weil McLain, Lochinvar, McDonnell Miller, Hoffman Specialties, Manitowoc, Scottsman and we strive to make sure you get the correct part for your application.

Give us a call with the information from your equipment nameplate and we will do our best to help. We can be reached at our local phone number 317-821-8770, Toll Free 877-821-8770 or by fax at 317-821-8772. Our physical address is 7720 S Mooresville Rd in West Newton , IN 46183. Business hours are 8-5 EST M-F. Prior to making repairs please consult your manufacturers instructions and follow all safety precautions. Improper repairs can lead to equipment damage or personal injury or death. If you are unsure of your ability please call a professional company.

Refunds And Returns

Items that are returned must be in original package and in new condition. We are not responsible for return shipping. They must be returned within 30 days of the purchase date. Any returns after 30 days will not be accepted. Refunds takes 4-7 days to be processed and appear back on the card used. A 25% restocking charge will be deducted from the original purchase price. If an item has been installed or altered in any way no refund will be processed. If you receive an item that is damaged please let us know ASAP so we can assist you.
Shipping Rate For Continental US Only. Please contact us for rates to Canada before ordering.


Company Name

Shortys HVAC Supplies LLC


7720 S Mooresville RD
West Newton, IN

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Sours: https://shortyshvac.com/
Furnace - Flame Roll-Out Switch - Repair and Replace

Problem: Why does my furnace rollout switch have to be reset so often? Why do rollouts have different temperature differences?

Answer:  The rollout switches and limits are determined by the engineers during the furnace building and testing process. Different areas of the furnace are allowed different heat measurements before they are determined to be safe or unsafe. If the furnace limit or rollout switch senses that over-heating occurs then it trips the rollout switch to prevent an unsafe over-heating condition.  Many times when a limit or rollout trips or opens up it will tell the furnace control board that the furnace has overheated and the blower on the furnace will run continuously to cool the furnace down until the power on the furnace is turned off and back on again. If your limit goes off again I would strongly suggest you get your furnace checked out to make sure something is not stopped up and to make sure you do not have a leak in the heat exchanger. This can be very dangerous! We sell limits and rollout switches on the following page:  Please click here if you would like to see the furnace limits and rollout switches we sell. Below we have a really good Youtube video that shows what happens when a heat exchanger or vent gets stopped up and gas flames roll out of the front of the heat exchanger. The rollout switches are placed as a safety device around the burner area to sense the hot flame or hot exhaust thus shutting down the furnace so you do not get a fire or get carbon monoxide poisoning. The video below shows an exaggerated version of what furnace flame rollout looks like. If you feel any heat coming out of the front of the furnace or if your rollout switches are going off then I would suggest calling a service company to make sure your furnace is safe. If a furnace has a leaking heat exchanger you can feel more heat come out of the furnace when the blower on the furnace starts up because a crack in the heat exchanger will allow blower air to enter the heat exchanger which creates a dangerous condition. Below we have a picture of two limits and one rollout switch. The push-button manual set rollout switch is located in the middle. We also have another really good informative video made by RepairClinic.com which shows how to replace a rollout switch. Thanks to RepairClinic.com for making this informative video! We also have another really good YouTube video made by AC Service Tech LLCthat explains how to test and troubleshoot rollouts and limit switches. Thanks so very much to AC Service Tech for making this excellent video! If your rollout switch is having to be reset please call a service company to check your furnace out. If you have any other questions please feel free to email us: [email protected]or comment in our comments section below. We would love to have your business!


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Categories: HVAC FAQ, HVAC Problems With Answers, troubleshooting, Videos

Tag: Heating troubleshooting

Sours: https://arnoldservice.com/problem-why-does-my-furnace-rollout-switch-have-to-be-reset-so-often-why-do-rollouts-have-different-temperature-differences/

Rollout switch carrier flame

Where is the flame roll out switch located on a carrier furnace?

Industry:Heating, ventilation, and air

Click to see full answer.

Similarly, you may ask, what causes flames to roll out on a gas furnace?

Flame rollouts in gas furnaces and boilers are caused by a high concentration of combustion gases inside the combustion chamber. Normally, these inflammable gases are exhausted from the furnace through the flue passageways in the heat exchanger, then up the vent to the exterior of the home.

Subsequently, question is, where is the reset button on my furnace? How to Find My Furnace Motor Reset Button

  1. Turn off the power to the furnace at the circuit breaker. The circuit breaker is clearly marked.
  2. Lift up the blower compartment cover to access the blower wheel and blower motor.
  3. Look for a small red or yellow button on the side of the blower motor.
  4. Press the reset button down if it has popped up.

Additionally, can you bypass a flame rollout switch?

Bad flame rollout switch want to bypass to run fan for AC. Shut off the gas first. You should look for the roll out switch as some of them have a reset button on them. A tripped roll out switch is a serious problem so don't put off until the fall to find out why it tripped.

How do you reset a flame roll out switch?

Press and release the raised red button at the center of the flame roll-out switch to reset the furnace. You can press the reset button up to three times before troubleshooting the furnace's internal components or calling for repair service; allow 30 minutes between each reset.

Sours: https://askinglot.com/where-is-the-flame-roll-out-switch-located-on-a-carrier-furnace
Carrier 8000 - Diagnose and Repair Limit Switch

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