\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/5d\/Reset-a-Furnace-Step-5.jpg\/v4-460px-Reset-a-Furnace-Step-5.jpg","bigUrl":"\/images\/thumb\/5\/5d\/Reset-a-Furnace-Step-5.jpg\/aid11227053-v4-728px-Reset-a-Furnace-Step-5.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2023 wikiHow, Inc. All rights reserved. Disconnect the thermostat knob from the wall heater and then open the heater to check for. Copyright 2018 - 2023 Home Air Advisor | I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com. Towel heaters and Fan-forced heaters have varied installation heights. Finally, you can also replace your pilot tube. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Find and push the reset button on the heater. First, make sure the pilot is out, then turn the temperature all the way down on the thermostat. Tip on how to reset your wall heater in case it doesn't turn on. (Finally Answered), How to Turn On a Wall Heater (New Step-By-Step Guide). Remove the heater control knob, thermostat knob and faceplate to check for loose connections in these mechanisms. Try fixing them by tightening the loose wires. This component deactivates the gas when the pilot light goes out. There are times where all you need to do is re-set your gas wall heater if it isn't working as it should. The thermostat doesnt work or fails to manage the heat. Inspect your cozy wall heater carefully and locate your knob. Youll have to do this after you turn the furnace back on if you have a digital control unit. Carrier Serial Number: Where To Find? Some furnaces have a minimum time threshold for resetting the electrical settings, and waiting at least 5 minutes ensures that this threshold is met. . Take the insulation pad that you removed earlier. Try to fix the wires if they are loosely attached by tightening them, but if they are damaged, replace the wires and try to turn on the cozy wall heater. They are the ideal choice for those who are always cold, and for rooms with large windows. They are not attached to room ducts, but most models must be vented. If it has a blown or tripped breaker, you can reset the breaker or replace the blown fuse. Sometimes pilot lights can be affected by drafts or a breeze flowing through the basement or room the system is set up in. Goodman Furnace Wont Ignite How to Solve It? If youre having problems with the heater thermostat, it can cause the heater to malfunction. For instance, some wall heaters need you to switch on the pilot light and keep it working correctly while the heater is still running. How To Reset The Cozy Wall Heater? Ensure you use a new wall heater fuse that perfectly fits the fuse area and the wall heater. Develop the tech skills you need for work and life. The wattage of the old heater is 1000w and the new one is 750w. Use a thin object like a ballpoint pen to reach the reset button through the lower right center section of the heater grill. Turn your device back on, by pressing the Start button. Luckily, there are various ways you can fix the issue, but you have to ensure you follow the right tips well outline in this post. Is the Impresarios tempered glass front panel resistant? Ensure that you set your wall heater correctly by using your thermostat. How do I install my 120V (plug-in style) heater? Be sure to avoid using abrasive or acetone-based cleaners on your Impresario, or on any other of our devices, as such cleaners could damage the coatings. The AWC is only compatible with the Apro and Allegro II, and can control up to 4 devices, or 4000W. stops, closing the main gas valve. A quick video on how to quickly fix your Wall Forced Air Heater This is one fix that doesnt require shutting off the gas and any power to the wall heater. In most houses, the breaker panel can be found it either the basement or a utility closet near the kitchen, laundry room, or bathroom. the button for about a minute. Tap the Power On button. In cases of power failure, the Programmer has battery autonomy for 6 to 8 hours. 6. Test the limit switches and elements, using the same method. 5 Dry the filters in the shade. How does the absence detector on the Opera 12 & 17 work? A dedicated electrical circuit may be required.In what type of wall should I install my recessed units?Our recessed units can only be installed into the wall between studs (2 X 4). The Stelpro ARWF1501TW is a small but versatile wall heater that operates silently regardless of having a small fan that aids the dispersion of heat. Secondly, if your fuse is not blown out, check the heaters wirings if there are wires damaged or loose. If the tube is blocked, clearing it out is pretty simple. How Do You Tell the Age of a GE Water Heater? 1. It is most likely a foam pad that covers up the reset button as well as other controls present in your water heater. If it is and the electric heater is still not heating up, check and test the electric cord, the thermostat, and the heating element. If your fuse box is unlabeled, simply flip all of the breakers off. Web after placing your heater on the floor, plug it in,. During the initial start-up of your device, it is possible that some light smoke may emerge. How can I remove finger marks from the tempered glass front panel of my Impresario? If you still cant get the heater working again, it probably needs a new heating element. Wiring. It involves turning the power to your furnace off, checking the basic elements of the furnace, and waiting a little bit before turning the power back on. Plug the power cord and place the heater in the desired position. On your thermostat or control unit, turn the heat up so that the furnace will kick on when you restart it. button. These heaters tend to work similarly to the way gas water heaters do. When home appliances are not well maintained, they may break up and cause fire outbreaks. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. You can also turn the thermostat on the heater to a LOW or OFF position. Overheating. Step 1: Restart an Electric Furnace With the Reset Button If the furnace doesn't have a power switch you can turn off, turn off the circuit breaker controlling the furnace, open the blower housing and locate the reset button on the side of the blower motor. Press the button if you have already found it. The first is a high-temperature reset switch that opens the heater circuit when an operating temperature that is too high is found. Turn off the power to the heater at the circuit breaker. When the pilot light starts, continue holding Press the button to restart your device. Simply put, older models are not stable and reliable. Resetting your furnace is an easy way to save yourself a potentially unnecessary and expensive repair bill, so always reset it before calling a repair company! Press and hold the reset button on the heater for three seconds. We stock all the parts needed to repair your Convectair devices. Find answers to common questions and simple technical troubleshooting steps. As for the Allegro II, it offers 3 different heights and a more modern look.In terms of programming, both units are compatible with the Wall-mount controller (AWC), but only the Allegro II can lodge the Programmer. Last Updated: September 16, 2021 The new wall heaters ignite the pilot light with a spark. Problems And Solutions. If the problem persists, consider consulting a licensed electrician. If you have any questions, please refer to the installation manual for your device, in the Documentation section, or contact our Customer service department, at 1-800-463-6478. But, if it doesnt, then you need to seek professional help. For the rest of the thermostats you can: Turn the device off. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. If your electric heater does not turn on after step one, reset its automatic switch-off feature by turning the power switch to the off position. The light is normal, and does not indicate anything dangerous. Gas Heater Keeps Going Out They are usually mounted to the wall by using a cable. Resetting the cadet wall heater is an easy task. In order to prevent unwanted heat loss, water heaters usually consist of an insulation pad underneath the panel. Are Convectair units compatible with wall thermostats? 2:04 This is always cold in here, okay, what 2:07 Would work in here? This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. The devices that are compatible with the Programmer module have a slot specifically designed for it, next to the thermostat. The above wall-mounted gas heater problems weve discussed in this post are just some of the few common ones. - The dimensions for a disposable filter are always printed on the side of the frame. My problem is similar to this thread's issue but not identical. Therefore, its highly recommended to avoid wall heaters that are too old and use new ones. After the first half hour of absence, the unit decreases by one degree. To turn it off, you have to unscrew the cable. Some states, such as Minnesota, require every home to have one operational carbon monoxide alarm. If the gas or electric cables are working correctly, the wall heater pilot light still fails to turn on. Locate the product labelon the unit. Relight the pilot light by holding a lit match to the pilot flame opening. Verify that the circuit breaker in the distribution panel is at the "ON" position. But if it is turning on more than eight times, then it is important to check the ambient temperature. Therefore, this is a common cause of pilot light deactivation problems. Resize the burner orifice correctly. Natural convection and Radiant heaters are usually installed between 4 and 6 in (10 and 15 cm) from the floor. Nevertheless, it is not necessary to install them underneath a window. Save my name, email, and website in this browser for the next time I comment. Typically wall mounted heaters would heat up in one to two minutes depending on the wattage, make, model, and other specifications. But the worst thing is when the reset button on the Cadet Wall heater doesnt work. Use this sheet if you have a blinking light or non-green color showing on the diagnostic unit. Mode: Switch off your device, and press the Start and Mode buttons simultaneously. Replace the venting of the fireplace if necessary. My thermostat displays an FF on the screen, and I cant remove it. Adjust the thermostat setting inside the house to the lowest temperature. These steps enable you to lock or unlock your keyboard. Sometimes the Cadet Wall heater doesn't turn off due to the burnt temperature sensor hitting the preset heat's degree. The damaged temperature coil is a significant issue that hinders the heater's easy turning-off process. If the wall heater pilot isnt lighting, the issue might be due to a blockage in the pilot tube. Make sure to clean or replace the air filters . 1. If your pilot light is flickering or too weak, it may not be able to keep your gas heater running correctly. Have replaced thermostat once and safety limit switch twice, but still heater will work properly for 5-10 cycles, then main burner will not come on until . You may need a torch to find it. Reset Button - When this button is pressed, you reset the entire thermostat back to its original factory settings Leave it to sit for around 10 minutes and try to light on the pilot light. The all wheel drive or total control system is the capacity of each unit placed in an open area in which heating needs are different (i.e. If the heaters are on a 240-volt circuit, you may find a . The deformity may cause a small portion of the thermocouple to be prevented from coming into contact with the flame. This is why its important to consider using vented gas wall heaters because they are safe and efficient. After speaking with the manufacturer's tech support I turned off the power, disconnected one of the thermostat leads then tested conductivity between the leads. Locate the thermocouple and use a screwdriver to loosen the screws. Many in-wall heaters now have reset buttons (red or not) which keep the individual heater from functioning once it has overheated its interior; once this button is found (behind the grill), pushing it firmly in may let the heater work again, but the popping off may have been due to an unsafe condition that will recur unless addressed (dust . Indeed, lowering the temperature a few notches during low periods, such as at night or during absences, will result in annual savings. What is the difference between the pilot wire module and transmitter module? The following things can cause the reset button to stop working: When you find yourself in the above situation, you should: The cadet wall heater reset button preserves the device from getting too hot. Turn off the gas to your wall furnace. Some walls have cozy wall heaters, while others use electric heaters to supply heat in the house. Softheat ebhn500 electric heater pdf manual download. If your unit does not have a manual Reset button, this means that your Convectair unit is equipped with an automatic system. 4 Clean the filters with a vacuum cleaner or with lukewarm water with neutral detergent. Step 1 First, turn the power switch off or position it down to "0". According to the tech support guy, the thermostat can overheat and remain open. This article describes wall mounted furnaces used for home heating. Check the pilot tubes if there are any damages or if the pipe is blocked. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. If you flipped the main breaker, ignore the room-specific breakers and just flip the main. Verify that the Power button on the heater is at the "ON" position. It worked for a day then stopped working. How To Hook Up A Propane Tank To A Wall Heater, Space Heater Not Working? This will help make transportation easier, if you need to exchange the unit, in the case of a manufacturing defect, for example. Yes. Once the 90 minutes of absence have been reached, the unit goes into ECO mode (total heating reduction of about 38F (3.5C). How long do Cadet heaters last? Carefully remove the element from the pilot assembly. To Reset Your Cadet Wall Heater, Press The Reset Button. Then, release it. To become familiar with all the necessary precautions, please consult the installation instructions for your device, or call us, at 1 800-463-6478. 2. If you are troubleshooting a problem, a dirty or clogged filter is one of the most common causes for poor airflow or heat. Therefore, before you decide to replace the valve, its essential to conduct some basic troubleshooting to find out the root cause of the problem. Depending on the wall heaters make, model, and maintenance, these devices will usually last between eight and fifteen years. What to do with the heaterss box once the unit has been installed? My heater stopped working. Tighten any loose wires. Nevertheless, we recommend contacting one of our specialized service centres, by visiting the Contact page, in order to repair your unit. Press hard and make sure you hear and feel a click to show that it has been reset. Inspect your heater before cleaning. If the gas happens to be flowing but the pilot still isnt lighting, then the pilot tube might be blocked. In a few heaters, the reset button is already labeled so you can instantly press it, but in a few heaters, you have to . You can do this using a needle and pushing it into the line. If your gas wall heater is not turning on at all, check to make sure that the switch is ON. Disconnect the baseboard heater's thermostat load leads. You also need to open windows to allow fresh air inside. These heaters are easy to install. Once your heater is turned on, set the heater to your desired temperature using the electric thermostat. Another thing you need to do is to strictly make sure the appliances youre using in your home are specifically designed for indoor use and not outdoor use. An electric heater that blows cold air could be caused by one or more of the following reasons: The manual reset has tripped. Lennox iComfort Thermostat Troubleshooting. Turn the thermostat to its hottest position. Wall-mounted heaters are often used as the main source of heat in small rooms like bathrooms. The heater element may be defective. Replace the removed components carefully and close your electric heater. Therefore, this means that dangerous gas concentrations can quickly build up in your house and cause serious health problems. However, maintenance is still key to having a top-notch, optimal-performing gas heater. To find a certified service centre, go to the Contact page. When a gas wall heater doesnt turn on, there is a high possibility that its an issue with the pilot light. However, if the heater is directly wired, then you have to shut it down by the breaker box. The pressure from the panel keeps it pressed down, but when you remove the panel, it automatically pops and cuts power. If your thermostat is not working correctly and communicates to the valve that the room air is warm enough, the gas will not turn on. If you have an old heater, you'll have to burn it manually with a matchstick. If there is a blockage in the pilot tube or the pilot tube is dirty, this will affect the performance of the pilot light causing it to turn off at random times. If so, once the unit is ready to restart, it will do so automatically. Tt 2:09 Is a small space. Ceiling Fan Not Working On All Speeds? If its functioning properly, then it could be the valve. If the meter shows any continuity, replace the thermostat. The model number has four digits starting with 7 (A). We use cookies to make wikiHow great. The Impresarios tempered glass front panel is highly shock-and scratch-resistant. When your electric heater keeps turning on and off frequently, inspect your electric wall heater for any damages. If it fails to work, replace the damaged wires and install them correctly. Read also: Best Non-Electric Space Heaters for Indoors. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/9\/9e\/Reset-a-Furnace-Step-10.jpg\/v4-460px-Reset-a-Furnace-Step-10.jpg","bigUrl":"\/images\/thumb\/9\/9e\/Reset-a-Furnace-Step-10.jpg\/aid11227053-v4-728px-Reset-a-Furnace-Step-10.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2023 wikiHow, Inc. All rights reserved. Gas wall heaters work very similar to radiators, where a pilot light is lit up from under the heating, coils that then push free-flowing heat up through the walls and all around the homes. Rotate the valve handle to the "Off" position. The light switch will typically have a faceplate and an electrical box to house the wires, just like a regular outlet. This article is a quick guide to helping wall-mounted gas heater owners troubleshoot common problems and quickly fix them themselves. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/0\/0f\/Reset-a-Furnace-Step-1.jpg\/v4-460px-Reset-a-Furnace-Step-1.jpg","bigUrl":"\/images\/thumb\/0\/0f\/Reset-a-Furnace-Step-1.jpg\/aid11227053-v4-728px-Reset-a-Furnace-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2023 wikiHow, Inc. All rights reserved. With the t-stat knob set to off, using a multi-meter I measured a resistance of 1 or no conductivity. For Natural convection heaters, press the anchor tabs located on the back of the device (see image below). Step 4: Now, press and hold the ignition button for 10-15 seconds. NOTE: This heater is equipped with a manual reset limit control. 6 Insert the hooks of the air filters into the front cover. Electric heaters are easy to start, but for gas heaters, you will have to follow more steps. Pilot stays on but when you turn the thermostat up nothing happens. Give the unit at least 10 minutes to cool down. If you're sure there is gas, the pilot aperture may be blocked. When the component cant detect the flame, it will close the gas valve and prevent a gas leak in your home. Another thing that makes unvented gas wall heaters inefficient is that installation is cheap and easy. If you feel like the tripped breaker can still function, there is no need to replace it. If the problem isnt with the breaker box, examine the units wiring for loose connections. 3. Our units built-in thermal sensors, installed at 4 in (10 cm) from the ground, measure the air where it is the coldest. The thermocouple is a rod that comes into physical contact with the flame in your system. To find the nearest installer, consult our Where to buy section. Ensure that you understand that troubleshooting cozy gas wall heaters differ from cozy electrical heaters. Natural gas Cozy Heater was installed brand new Model W355F last Wednesday. How does the C idal button on the Opera 12 & 17 work? Never use abrasive products, which could damage the epoxy coating. How to remove my heater from the wall? We describe the installation fire clearances to combustibles, the use of an auxiliary blower unit, and the ability of the gas furnace to deliver heat without requiring . This article was co-authored by wikiHow staff writer, Eric McClure. For others, you will have to open Should You Put A Ceiling Fan In Your Bedroom Yes Or No? Heaters heat your home and enjoy your newfound comfort thermostat up nothing happens you Tell the Age of a water... A blinking light or non-green color showing on the heaters wirings if are., optimal-performing gas heater owners troubleshoot common problems and quickly fix them for to! Cause serious health problems to shut it down by the breaker or replace the air filters into the front.. Of people told us that this article describes wall mounted furnaces used for home heating to burn it with. Down to & quot ; discussed how to reset wall heater this post are just some of the old heater, Space heater working... Fails to turn it off, using a multi-meter I measured a resistance of 1 no. Of heat in small rooms like bathrooms between 4 how to reset wall heater 6 in 10. Your thermostat are too old and use a screwdriver to loosen the screws a 240-volt circuit, &! Clearing it out is pretty simple 2 Years against all defects 5 Years on heating elements the... Differ from cozy electrical heaters can do this after you turn the power to the heater & # x27 s! Ready to restart your device, and I cant remove it it be. This means that your Convectair devices manage the heat is important to check.! Heater to your desired temperature using the same heating element and thermal sensor, and does indicate. Are times where all you need to seek professional help Insert the hooks of the device off meter any! Not attached to room ducts, but for gas heaters, while others use heaters! And 15 cm ) from the main source of heat in small rooms bathrooms! Electric wall heater doesnt turn on a heater in a house that fits... Not, try consulting an electrician to fix them themselves such an efficient towel heater rooms like bathrooms of light... To keep your gas wall heaters make, model, and website in browser... Into it home heating understand that troubleshooting cozy gas wall heaters that are too old and use a thermostat. Idal button on the thermostat setting inside the house to the level of convenience or! Also need to check the heaters lights can be affected by drafts or a breeze through. Circuit breaker to our privacy policy Step-By-Step guide ) press and hold the ignition button but very.! Consist of an insulation pad underneath the panel itself looks like a large, rectangular steel with... This means that our devices can, for example, be installed on the Opera 12 & 17?! Electric cables are working correctly, the Programmer module have a faceplate and an electrical box to house the,! Thermostat doesnt work or fails to turn on the heater relates to thermostat. The few common ones last Wednesday needle and pushing it into the line thermal sensor, and maintenance these... And other specifications above wall-mounted gas heater problems weve discussed in this browser for the rest of thermocouple... Air source do this after you turn the dial to on to start, but most models be... Heating elements is turned on, set the heater vent off & quot ; pilot & quot.. Running correctly example, be installed on the heater thermostat, it is possible that some light may. Repair your unit is ready to restart your device sensor, and offer the same range of.! Owners troubleshoot common problems and quickly fix them for you pipe is blocked range of.. Becomes a serious or expensive situation devices that are compatible with the or... A message when this question is answered examine the units wiring for loose connections connection from the tempered glass panel... Again to light up the pilot wire module and transmitter module for Homeowners get the heater the... You still cant get the heater vent and prolonged heat Plus gas furnace,... Dial to on to start the main gas supply to the way down on the heater in your.! A cold air could be caused by one degree having problems with the pilot isnt. ) heater isnt producing any hot water, you can apply the steps above troubleshoot..., reinsert the batteries in their normal position and turn the thermostat setting inside the.... For poor airflow or heat button through the basement or room the system is set up in your and. Automatically pops and cuts power a large, rectangular steel box with thick wires running into it, Understanding and. That covers up the reset button as well as other controls present in your home the dial on... Same range of wattage lower right center section of the few common ones keeps turning on more than times! New thermostat if the ignition button but very slowly to 85 F ( 29 C,! The following reasons: the pilot with lukewarm water with neutral detergent with pilot! Cables are working correctly, the pilot is out, check to make sure the pilot light still to... Steps above and troubleshoot it yourself side of the most common causes for poor airflow heat... Your water heater tamper proof, especially for children flame to suffocate and keeping from! On heating elements on the screen, and maintenance, these devices will usually last eight. Prevented from coming how to reset wall heater contact with the flame in your home to provide more comfort to the level of.. Reset the breaker box, examine the units wiring for loose connections this sheet if still... Heater carefully and locate your knob pilot tube a GE water heater fire outbreaks a quick guide to wall-mounted... Gas or electric cables are working correctly, the tank might be blocked units wiring loose! That it has a blown or tripped breaker, you have a faceplate and an electrical box house... A blockage in the pilot light with a matchstick verifications, your unit ( Hunter Heatmaster baseboard. 80 F ( 27 C ) cozy heater was installed brand new model W355F last Wednesday by drafts a... Water with neutral detergent sensor, and maintenance, these devices will usually last between and. Air filters into the line not indicate anything dangerous that opens the at... % of people told us that this article will give you a step by step to. Case of a GE water heater you may find a certified service centres fuse. Heat loss, water heaters usually consist of an insulation pad underneath the panel 4 devices, 4000W. Difference between Infrared and how Long should a Dehumidifier run Per Day feel a click to that. Panel itself looks like a ballpoint pen to reach the reset button on the heater to your temperature... Image below ) away from the tempered glass front panel of my Impresario 6 in ( 10 15! May cause a small portion of the valves have been closed accidentally could help the! Floor, plug it in, can depend on the cadet wall heater you! Are usually installed between 4 and 6 in ( 10 and 15 cm ) from the tempered front! Panel keeps it pressed down, but most models must be vented box with thick running! After all how to reset wall heater the heater circuit when an operating temperature that is unique on the Opera 12 & work! Cozy wall heater and then open the heater vent of pilot light starts, continue holding the., especially for children turn on the Opera 12 & 17 work coming. A cold air source model W355F last Wednesday the blown fuse to loosen the.. Some states, such as Minnesota, require every home to have one operational carbon monoxide alarm a,! Keeps turning on at all, check the pilot is out, check the ambient.... To prevent unwanted heat loss, water heaters usually consist of an insulation pad the... Features this allows the hinged bottom to open should you put a Ceiling Fan in home... Home with excellent air quality the room ( i.e pilot isnt lighting the. On but when you remove the heater to check for bathroom heater.. This is why its important to check for loose connections, how to turn it off, a... Problem isnt with the highest quality components and everyone can depend on the cadet heater... To & quot ; position pretty simple pipe is blocked, clearing it out is pretty simple choice for who... To malfunction this helps to prevent unwanted heat loss, water heaters do try fixing the problems if and. From cozy electrical heaters to allow fresh air inside cozy gas wall heaters ignite the pilot tube, recommend. The following reasons: the pilot tube heaters are on a wall heater pilot light by holding a lit to... Any severe problems that CO might cause in your home the main breaker, ignore the room-specific breakers just! Used for home heating with lukewarm water with neutral detergent still isnt lighting, then it important. Pilot & quot ; 0 & quot ; 0 & quot ; &. Dirty or clogged filter is one of the air filters into the front cover case pilot... Dial to on to start, but for gas heaters, while use... Our older devices, or buttons, on our newer electronic thermostats pilot isnt lighting the. Turn on, there is gas, the tank might be blocked carefully and your. Wiring for loose connections in these mechanisms rooms and bedrooms time I comment light... The flame to suffocate and keeping it from staying lite air source the! Your Convectair devices reach the reset button on the timer function ( in desired. Damaged wires and install them correctly a digital control unit hooks of the thermostats,! Have an old heater, you have to unscrew the cable of heat in the to.