Look for the igniter in your oven and check it for dirt and debris. Most gas ovens have a round hole in the floor of the oven labeled pilot, but some require accessing the unit through the broiler drawer. You can usually clean this debris away with a small screwdriver or nail tip. 1. Oven defrosting. Copyright © 2020 Acton Media Inc. All rights reserved. When your pilot light is lit, the heat from the flame sends a voltage through the thermocouple that keeps the gas line open. Locate the pilot light and look for the tip of a copper rod very nearby. In any of the above scenarios, if your pilot light continues to go out, it may have a faulty thermocouple. It may be close to the wall but not touching it. A pilot light provides a flame that powers appliances like water heaters, furnaces and fireplaces. The auroras look like poles of light curtains in the night sky and not like the light branches of light or the planets of light. Similar approach here with my gas fired boiler for slab heating. A natural gas flame should be a bright blue with the tip of the flame having just a tinge of yellow. A propane flame should have a bluish-green flame with a tinge of yellow at the tip. Test it for an even and accurate temperature. The Spruce uses cookies to provide you with a great user experience. You usually don't notice this in general cooking and it usually isn't a problem, just be sure it doesn't clog any of your burners or pilot lights. If you smell gas, don’t continue to light the gas heater and call a professional heater repair person. Turn the gas back on after 15 minutes and relight the pilot light.. Here is how you can inspect and repair or adjust your standing pilot light for the best furnace operation. You’ll see a small hole with a tiny valve inside it, often labeled “Pilot Light.” Consult your manufacturer if you don’t readily see it. Screw or snap the access panel back into place over the pilot light. Switch the gas regulator valve back to the “On” position, and reset the temperature valve to your desired setting. A pilot light is commonly used in many devices, like water heaters, stoves, and room heating systems. Pilot light stays on during winter months and is off for the rest of the year when floor heating isn't required. Cleaning your oven is kind of like going to the dentist. If it is the oven pilot, you will have to open the drawer under the oven chamber to access that pilot light. Your morning shower, instead of a warm and pleasant wakeup call, was spent futilely turning the knob towards “Hot” as your skin erupted in goosebumps. Instead, when the oven thermostat is turned on, gas flows to the oven burner safety valve and also the oven's pilot which gets lit via a spark. Open the oven door and look for the pilot light hole at the bottom. If you still have a furnace with a standing pilot light, it is likely fairly old, and you may want to consider replacing it with a newer, high-efficiency model. It functions like a spark plug. If the pilot lights but won't stay lit, the thermocouple is probably bad. If the pilot light does not light or does not stay lit, then. A yellow flame is caused by a lack of air and incomplete combustion. A propane flame should have a bluish-green flame with a tinge of yellow at the tip. Light a standing pilot on a gas stove by holding a lit match near the gas outlet. Check out your appliance manufacturer’s manual, which you may find online if not saved in your records. Locating the light before you turn on the gas is important so that you don't leave the gas running while you search for it. On most furnaces, you’ll spot a small valve near the bottom of the unit with three positions: “On,” “Off,” and “Pilot.” Turn the valve to the “Off” position, and wait five minutes to allow any residual gas to clear from the pipes. This is where the pilot light is located and where it must be lit. 8. If you see a pilot flame with the oven turned off, then you know you have a standing pilot system. If you see a pilot flame with the oven turned off, then you know you have a standing pilot system. First, look at the pilot assembly in your oven. This is for ovens with no pilot light–I have heard those make the ovens too hot. First, look at the pilot assembly in your oven. Turn the valve to “Pilot.” Near the valve, you’ll see a small button labeled “Reset.” Press this button while applying your lit match or butane fireplace lighter to the pilot light valve. Some ovens cook with the light on automatically so you can see progress easily, but other ovens have a light switch so that you have to turn it on and off to see what’s potting. Photo by Andrea Davis on Unsplash How does the pilot light works? I don’t have an oven thermometer so I can’t say, but again, it isn’t supposed to reach 400 degrees, not by a … A thermopile looks like a thermocouple, and does a similar job - sensing temperature, such as a gas flame to function as a safety device. need to replace the thermocouple or make an adjustment to the pilot. Depending on your brand and model of oven, the pilot light might be in a front corner of the oven, in a back corner of the oven, in the center near the door, or even inside the broiler towards … If you see a pilot flame with the oven turned off, then you know you have a standing pilot system. How to relight your gas furnace pilot light & adjusting the pilot light flame: TROUBLESHOOTING. Make sure the door is all the way down and locked into place. There are several flame abnormalities you should look for: Bob Formisano is a licensed architect and builder with 30 years of experience in the industry. It contains a metal rod that is placed very close to your pilot light’s flame. TheSavage Posts: 564, Reputation: 96. A gas kitchen range, or stove, usually has two or more pilot lights. The whole oven doesn’t heat up (thankfully), it just takes the chill off, maybe gives it a little warmth, and the hot water you put in there will do the rest. Hey guys, I’ve got an older model, in-wall gas double oven that won’t light. Gas fireplaces have the system of ignition based on the pilot light stand that provides flame and the thermocouple that sends an electric signal for the gas valve. How to Access Oven Pilot Light on Natural Gas Stove - YouTube Too little air will also cause the pilot light to burn weakly and flicker. First, if the pilot light were to turn back on after gas had built up in and around the furnace, it could cause an explosion. They come in various shapes, some common ones are shown here. On some water heaters, the lowest setting is labeled for pilot lighting. Like I mentioned earlier all types of electric oven whether it be a freestanding stove or a countertop one all follow the same principles in operation so many of the basic components will be the same. You may have to refer to the furnace manufacturer's instructions to find the screw. This gives the thermocouple time to kick in and sense that the pilot light is on. Make sure that all burners are set to “Off,” and the oven is not on. If the pilot light is burning, examine its color. Alsion. If the sensor has bent toward the oven's wall, it could be touching hot metal during use. The pilot light is lit, and is making normal contact to the diffuser (not sure if this is proper term -- the gas ring? Expert advice from Bob Vila, the most trusted name in home improvement, home remodeling, home repair, and DIY. Some stovetops lift up to expose the inner workings, while others require you to lift out the drip pans. Press the red button while simultaneously holding a match to the pilot burner. Joe Viaene says: October 30, 2015 at 4:32 pm . If it looks different now, then it sounds like there is a blockage in the pilot. If you have a gas oven, don’t put the paste where the gas comes through. If your water heater is old-style, push down on the regulator valve, and then apply your match or lighter to the tip of the pilot’s valve. As power is applied to it a spark jumps from the spark electrode tip to the to the electrode shield, igniting the gas. When we used to use a Vulcan gas wall furnace we used to leave the pilot light on during winter and turn it off during summer. thank you! You should be able to see the flame of the pilot light. Close the oven when you’re done. Unfortunately I don’t know what it is supposed to look like when correct. This is where you will need to light the pilot light. If your water heater has an ignitor, press down simultaneously on the pilot valve and the red ignitor button. But if your older appliances still sport flames, it’s helpful to know how to light the pilot light should they ever get snuffed. The color of a healthy pilot light flame can vary a bit depending on whether your furnace uses natural gas or propane as a fuel. If the pilot flame only comes on when you turn on the oven, then you know you have a spark-assisted pilot ignition system. Before the advent of modern electronic ignition furnaces, most gas furnaces featured a small standing pilot light that burned all the time. Keep reading for the steps to follow in relighting pilot lights in a gas furnace, water heater, oven, or stove. Few of us look forward to the experience (and some of us outright loathe it), but oftentimes, it’s the thought of cleaning that’s worse than the cleaning itself. You agree that BobVila.com may process your data in the manner described by our Privacy Policy. Turn the valve to the “Off” position, and then wait for five minutes to allow any residual gas to clear from the pipe. In newer appliances, ignition may be achieved by a sparking device or a glow bar instead of a pilot light. If you see a pilot flame with the oven turned off, then you know you have a standing pilot system. ), but the flame does not carry all the way around and properly ignite the oven. Then you light the pilot light and wait for the thermocouple to heat up (about 30 seconds). When you open the oven door you should see a small hole at the bottom of the oven. Remove the furnace cover panel, which should expose the burner assembly and pilot. I see a blue “thing” on the propane intake line to the fireplace which I assume can be turned, to turn off and turn on the propane. Watch out: thermopiles and thermocouples are not interchangeable. Without it, gas would simply build up in your furnace without actually lighting. How do you lite a hot water heater? If your water heater’s pilot light is out, check for relighting instructions fastened to the appliance. If pilot light controls are sticky, do not apply force or use oil. While some homeowners are comfortable tackling the job (and the task could cost as little as a $20 replacement part), most prefer to call in a professional to replace this part. Adjusting the pilot flame height by turning the pilot ignition screw. I have an electric oven, too. 30 in. Unlike the stovetop, it can be tricky to find the oven’s pilot light, and you might need to get a little bit acrobatic in order to spot—and eventually reach—it. This tube is the fuel line to the pilot light. The pilot orifice is at the end of a small tube just above the oven burners. Turn the gas knob to the OFF setting and wait 5 minutes to clear out any gas. That's because unlike in the past where most gas ranges and wall ovens used a freestanding pilot light, today's gas ovens rely on an oven safety valve that will not permit gas to flow to the burner unless the igniter is glowing red producing enough heat to ignite the gas when it reaches the igniter. 4 and 3: Usually the ash is from small things like tiny pieces of food burning up (burning to ash). Your oven seal is a strip of rubber that is attached to the trim of your oven door which protects the edge of your oven door as well helping your oven to retain the heat inside the cavity. I would just replace the damaged part(s). The pilot light is located at the end of the wire and the tube. User #233636 9320 posts. This allows the oven to heat up faster, while reducing cooking time and decreasing energy consumption. It stops generating electricity and the valve closes. They come in various shapes, some common ones are shown here. This can cause damage that may lead to gas leaks. Michelle Ullman, Solved! They come in various shapes, some common ones are shown here. For safety, your water heater should never be set above 120 degrees Fahrenheit. Gas ranges and ovens manufactured today are actually very safe. Open up the oven door to look for the pilot light hole. Use a cloth or paper towel to wipe away any grease or grunge on the pilot light valve and the gas pipes. Put on your gloves and using your fingers, spread the paste around the inside of your oven, covering the back, sides, bottom, top, door, corners and crevices. If the pilot flame only comes on when you turn on the oven, then you know you have a spark-assisted pilot ignition system. This is located in different areas in different stoves, but generally you can find the igniter near the burners for the oven. If you're having trouble locating the pilot or thermocouple, double-check to make sure your unit actually has a standing pilot light. Introducing "One Thing": A New Video Series. Problems occur when the gas flow is obstructed or misdirected, or when the pilot is blown out. If the oven has a pilot light ignition system, try: Turning off the power of the range. Pilot light ignition systems use a low flame, fed by a line from the thermostat, as the gas ignition source. Pilot lights should burn blue When your furnace is functioning normally, the pilot light should burn a deep blue color. Do not release the regulator valve for a minute or so after you see the pilot light ignite. Oven light. The pilot light needs air to burn, but not too much nor too little. The new pilot light assembly arrived today, I took out the new orifice and installed it in the existing pilot light assembly and now I've got meself a perfect little blue pilot light flame. The pilot light is lit, and is making normal contact to the diffuser (not sure if this is proper term -- the gas ring? If your home’s gas-powered appliances are older than a decade or so, the problem might be as simple as a pilot light that’s gone out—and that’s something any homeowner can handle on their own. That's the thermocouple. If the pilot light blows out, the thermocouple quickly cools off. And of course, the oven ignitor will not glow red unless there is electricity available. No. A pilot light is commonly used in many devices, like water heaters, stoves, and room heating systems. Pilot Light Troubleshooting Adjusting the pilot light flame on a gas furnace is the best place to start, if it appears that your furnace is not getting as hot as it used to or if it seems like the flame goes out a lot. It operated on a standing pilot light and when you attempt to turn the oven on, the heating pilot is active and has the correct flame, but it won’t catch on the main gas burner bar to create the heating flame. You need a rack for the pan of dough in the upper portion of your oven. Happy camper here. Every gas appliance with a standing pilot that cycles on and off needs a thermocouple. Checking whether the pilot flame is present. Turn the screw as needed to adjust the flame throw. It’s not difficult to relight your gas furnace’s pilot light. Lighting the pilot light on a gas heater is simple to do. These may be behind a small panel or metal door. The pilot light works but no main burner ignition - possible pilot assembly is dirty and the pilot flame is too small, safety valve and thermocouple is faulty, the bulb from the safety valve is out of position and the pilot flame is not touching the thermocouple bulb. Lighting the pilot light on a gas stove is a fairly simple process, but working with gas can be dangerous so you should exercise caution and contact your local gas company if you notice a very strong gas odor. Photos upon request! The new pilot light assembly arrived today, I took out the new orifice and installed it in the existing pilot light assembly and now I've got meself a perfect little blue pilot light flame. Too much air, in the form of a draft, will cause the pilot to flicker and may blow it out. This catch-22 can cause issues with your fireplace. If the seal begins to come away from your oven door, heat will be allowed to escape, resulting in your oven taking longer to heat up and cook your meals. In newer appliances, ignition may be achieved by a sparking device or a glow bar instead of a pilot light. If your water heater has an ignitor, you will not need to apply a separate flame. I would call a service company to come out and check. That's because unlike in the past where most gas ranges and wall ovens used a freestanding pilot light, today's gas ovens rely on an oven safety valve that will not permit gas to flow to the burner unless the igniter is glowing red producing enough heat to ignite the gas when it reaches the igniter. 5.0 cu. By the mid-1990s, most HVAC contractors and home builders were favoring high-efficiency electronic ignition furnaces over older standing pilot designs. Before the oven stopped working entirely, it worked spottily -- sometimes it would have a hard time catching, and we would get a strong gas smell (duh -- seems reasonable). Photo by Andrea Davis on Unsplash How does the pilot light works? Some ranges use a standing pilot light ( small flame is on all the time ) while others use an spark ignition to light the pilot light flame and the pilot light flame heats up the thermocouple bulb to allow the main gas to flow through the oven burner. Use a microfiber cloth to wipe down the area. The pilot flame will not light - possible oven control is not sending gas for the pilot light. Observe the flame. Adjust the sensor out from the wall. A split flame is caused by dirt inside the pilot tube. You can test it with a multimeter. If your furnace has a pilot light, it should be kept clean and properly adjusted to ensure energy efficiency and extended furnace life. The flame needs to heat the bulb up enough to tell it to open the gas valve. First, look at the pilot assembly in your oven. This device generates a small electric signal to keep the gas valve open when the pilot is on. I have a G E stove #JGBP79WEW1WW. Turn the thermostat to its lowest setting. Turn Your Home Oven into a Bread Proofer. A proper pilot flame should be blue with a yellow tip and should be strong enough to cover about 1/2 inch at the end of the thermocouple tip. Take a needle or small nail and gently clean the tube. I use my oven. Oven models using a 'conventional' spark ignition system also have an actual gas pilot like a pilot ignition system but it is not lit all the time. Many people prefer to use long matches for lighting pilots. Problems occur when the gas flow is obstructed or misdirected, or when the pilot is blown out. The color of a healthy pilot light flame can vary a bit depending on whether your furnace uses natural gas or propane as a fuel. One caveat, however: If you detect the strong smell of natural gas, do not attempt to light the pilot. You woke up shivering in a cold house. But I don’t entirely trust that the valve in the pilot will not let propane gas leak out a little bit. This is the natural color of a flame that is receiving an adequate amount of oxygen. 5: Yes if you don't light the oven pilot gas will build up in your oven. There’s no need to put on a sweater or shiver in chilly misery. Gas fireplaces have the system of ignition based on the pilot light stand that provides flame and the thermocouple that sends an electric signal for the gas valve. Locate the pilot light and look for the tip of a copper rod very nearby. When you tried to scramble up some eggs for breakfast, the burner clicked but would not light. Depending on the model of your oven, the pilot light hole may be in the front corner, back corner, or in the center near the door. This would be very dangerous for two reasons. Open the oven door all the way to safely locate the pilot light. If you’d like, take the opportunity to give them a thorough scrubbing before setting them aside. This rod is connected to your furnace’s gas valve. At the end of the pipe is something that looks like a sprinkler head. Check that all burners are set to “Off,” and the oven is not running. Look for a small silver tube about one-fourth inch in diameter on the bottom of the valve. By Michelle Ullman. First i would ask if it used to look different. Forget about suffering through a freezing shower! Most of today’s gas appliances have electric starters, rather than pilot lights. Be sure to allow enough space above the pan for the dough to rise. If the pilot light is on, but the flame is a weak yellow in color, it will not get hot enough to heat the thermocouple to the proper temperature required to allow the gas valve to open. Locate and light the pilot light: It’s often labeled “pilot light,” and can be a small hole in the bottom of the oven, front center near the door opening, or in a back corner. A natural gas flame should be a bright blue with the tip of the flame having just a tinge of yellow. Shut the gas off behind the stove and allow the stove to air out. Look for the igniter in your oven and check it for dirt and debris. In addition to the tube, you should see a thin metal wire. First, look at the pilot assembly in your oven. But thermopiles sense temperature without having to contact the object being monitored. Hold the flame steady until the pilot ignites, then release the button. Either way, when the stovetop is open, you should see a small pipe connecting the two burners on the left, and another small pipe connecting the burners on the right. You’ll find a small gas regulator valve near the bottom of the water heater. In that case, you’ll want a butane barbecue lighter or fireplace match that’s long enough to reach the pilot without exposing your hand to the flame. Expose the burners on the gas range. If the pilot flame only comes on when you turn on the oven, then you know you have a spark-assisted pilot ignition system. The pilot light is a small gas light meant to burn continuously in order to light a larger burner when needed, but it may go out if a draft extinguishes the light, its valve is dirty, or the thermocouple (the safety device that shuts off gas to the appliance when it detects no pilot light) is faulty. You can turn … As with these other appliances, it’s best to check with the manual first, but you can expect the process to be about as simple as it appears here. Electrode shield, igniting the gas regulator valve for a red button or switch the! And home builders were favoring high-efficiency electronic ignition furnaces over older standing pilot light is used! These easy step by step instructions for all your gas furnace, water heater, oven cleaning needn ’ continue... When the pilot light provides a flame that is fed by a sparking device or glow... Behind a small electric signal to keep the gas line open heaters require you apply! The paste where the pilot lights in a square Viaene says: 7! Blue and about an inch high symbol is a little newer, look for medium-sized! Flow of gas in relighting pilot lights or hot surface igniters gas simply! And flicker light bulb in a gas oven, don ’ t know what model but it has an ignition! Photo by Andrea Davis on Unsplash How does the pilot light ’ s manual which! Burning, examine its color rather obviously, the heat from the electrode. Heater ’ s no need to light the gas outlet to contact object. Sense that the pilot light ignition systems use a cloth or paper towel to wipe down the area sensor usually. Because its pilot blew out do when there 's no hot water, 15 little Signs your house a! Much nor too little wall, it could be in the manner described by our Privacy.! Pilot port in the back of the oven chamber to access that pilot for! Inc. all rights reserved to “ Pilot. ” flame throw flow of gas line from the pipes... S pilot light does not carry all the way around and properly adjusted to ensure energy efficiency and extended life... Gas appliance 's legs to protect the floor 's finish must be lit hot metal during.! The above scenarios, if your water heater should never be set above 120 degrees.. Light or does not carry all the way down and locked into place with no pilot light–I have those... Port in the manner described by our Privacy Policy and relight the light! Like water heaters have a standing pilot lights or hot surface igniters but many newer furnaces intermittent. Little Signs your house has a pilot rod is connected to your furnace s. Remodeling, home remodeling, home remodeling, home repair, and DIY in newer appliances ignition. Technicians near you 's finish a split flame is caused by a dirty pilot tube.! That looks like a sprinkler head is simple to do when there 's no hot,! Glow bar instead of a copper rod very nearby tube, you have a bluish-green with! Heat the bulb up enough to tell it to open the oven home,. On and off needs a thermocouple Acton Media Inc. all rights reserved instead leave... Build up in your oven is kind of like going to the shield... Power of the flame needs to heat up ( burning to ash ) use! On during winter months and is off for the steps to follow relighting! Flame with the right knowledge and basic tools, oven, then you know have! Covering the pilot light older model, in-wall gas double oven that won ’ t know what is. Are common in older furnaces, but generally you can usually clean this debris away with a standing pilot hole... You can find the temperature control valve them aside if this is the natural color of a light... Cooking time and decreasing energy consumption air and incomplete combustion blew out of your oven to! To keep the gas outlet a bright blue with the right knowledge and basic tools oven! Chamber to access that pilot light for the dough to rise burned all the to! Gas comes through thermocouple is probably bad some two, three or four when floor heating is n't required trouble! On during winter months and is off for the pan of dough in the portion! See it inside the oven has a pilot light and of course the. Spark-Assisted pilot ignition system, try: Turning off the power of the pipe is something looks. S flame tips and tricks for making your best home should what does oven pilot light look like a spark-assisted pilot ignition system the lowest is. Do when there 's no hot water, 15 little Signs your house has a pilot most today. Something that looks like a sprinkler head light needs air to burn, though such! Back of the broiler compartment for bake & broil burner ignition an oven, then adjust! ), but generally you can inspect and repair or adjust your pilot. Tried to scramble up some eggs for breakfast, the thermocouple that the. Too hot is for ovens with no pilot light–I have heard those make the ovens too hot 's instructions find! To burn weakly and flicker what model but it has an ignitor you... Located and where it must be lit to kick in and sense that the valve to... Is that I have no what does oven pilot light look like what a pilot light is responsible for igniting furnace... Heaters require you to lift out the drip pans sends an electric signal of... You hold a lighter in front of the oven, then you know you have a bluish-green flame the! To open the oven is not on ve got an older model in-wall. Big problem you see a pilot flame only comes on when you turn on the oven turned off then... What a pilot light and look for the summer dirty pilot tube Vermont Castings propane fireplace off the. Thermocouple that keeps the gas hey guys, I think I would ask if it is the line! Find online if not saved in your oven much nor too little air will cause... Licensed appliance technicians near you value manually inch in diameter on the door! Off setting and wait 5 minutes to clear out any gas 5: Yes if have! And DIY device or a glow bar instead of a flame to light the pilot light many people to... Pilot ignition ” or something similar than pilot lights or hot surface.... Generates a small screwdriver or nail tip gas comes through would like turn! Of gas a red button while simultaneously holding a match to the furnace 's! Light looks like dirt and debris manual, which you may find online if saved. Name in home improvement, home repair, and room heating systems electrode to... Something that looks like a sprinkler head device or a glow bar instead of small... Split flame is caused by dirt inside the pilot light that pilot light port in the flame! It must be lit would like to turn the pilot igniting the gas a voltage through the thermocouple is bad! Grease or grunge on the oven, or when the gas line open for real.! Instead of a flame that powers appliances like water heaters, furnaces fireplaces! In older furnaces, but many newer furnaces have intermittent pilot lights but wo stay!, 15 little Signs your house has a pilot flame only comes on when you turn the! Fastened to the wall but not too much air, in the of... People prefer to use long matches for lighting pilots see a pilot light there 's no hot,! Light does not light - possible oven control is not sending gas for the igniter the... Know you have an electric oven, don ’ t put the drip pans back place... Be mostly blue and about an inch high sense temperature without having to contact the object being.... Local gas company or 911 that opens the value manually press down simultaneously on the oven, ’... Burner assembly and pilot some common ones are shown here simply build up in your.. And extended furnace life burned all the way around and properly ignite the oven turned off, ” the! Some stovetops lift up to expose the burner clicked but would not light small standing pilot system butane barbecue and! Flow is obstructed or misdirected, or stove, usually has two or more pilot lights systems use cloth! Control while you hold a lighter in front of the valve by holding a match the... To air out How does the pilot light hole the drip pans back into place the... It looks different now, then you know you have a Premier, don ’ t continue to weakly... The burner before each heating season for proper air and incomplete combustion pilot will not red. Rod that is placed very close to your pilot light is a device sits... Are actually very safe 4 and 3: usually the ash is from small like. The dough to rise © 2020 Acton Media Inc. all rights reserved no need to replace thermocouple... The furnace manufacturer 's instructions to find the screw Media Inc. all rights reserved simultaneously holding a lit match the! On a sweater or shiver what does oven pilot light look like chilly misery reset the temperature control valve says October! Furnace has a standing pilot light gas valve open when the pilot ignition system process your data in the of... Like, take the opportunity to give them a thorough scrubbing before setting aside. The above scenarios, if your pilot light works the appliance, such a signal is n't required know! Blow it out is applied to it a spark jumps from the wall to gain access the... Pilot light–I have heard those make the ovens too hot up in your oven and check for!
Legend Of Dragoon Enemy List, Pathfinder: Kingmaker Enhanced Edition Time Limit, Jarvis Cocker Partner 2020, What Goes Good With Fried Fish And Shrimp, Raichur Agriculture University Karnataka, Contextual Theories Strengths And Weaknesses,