thermopile voltage low repair

If you don’t feel confident in dealing with your own gas lines, please call in a professional to help. The Honeywell CQ200A has been proven in millions of appliances as the contractor's preferred thermopile and are found in many of today's self powered gas fireplaces. Checking your fireplace thoroughly. Check thermopile specs for proper voltage. You need a minimum of 18-20mv to keep a gas valve pilot open. The thermopile voltage is digitized and provided as an input to the integrated math engine, along with the die temperature (T DIE). This device generates a small electric signal to keep the gas valve open when the pilot is on. Every make and model may be slightly different. The thermopile is the compilation of several thermocouples together. Ask Your Own HVAC Question. I’m a DIY woman at heart. The Honeywell Q335 Thermocouple is a quick dropout thermocouple that generates 30mV. Actually the whole burner assembly including the thermopile was changed, part number am46743. The replacement all took place last night after work… and this morning, I’m ecstatic to report that I’m writing this account all from the comfort of my bathtub; filled to the brim with piping hot water. The idea being a thermopile delivers a higher voltage and more current than a thermocouple. I began thinking to myself, screw Honeywell, and screw Rheem, and screw Home Depot for selling such a crappy product. I bought this thermopile to repair a wall furnace which would not stay lit. For example, a 100nF capacitor across the 1M and another 100nF from the non-inverting input to ground. Gas Rheem Hot water heater indicates low thermopile ( 2 Flashing red lights) -- turned off for a while ( 10 mins). Michael Joseph has more than 20 years of hands-on experience as an avid home handyman and had 10 years in the construction industry, specifically in the field of HVAC. “The pilot light is off.” He shouted from the basement. And after 5-7 seconds gas valve Honeywell shutdown – with […] The water heater did not work. Understanding the differences between a thermopile and a thermocouple fireplace requires an understanding of the differences between these two devices. Most thermopiles are designed to generate between 500-750 millivolts from the heat of a normal pilot light, so mine was well on the low side. Poor connection on the wiring, a dirty or loose connection will cause an excessive voltage drop, stealing power from the gas valve. My Honeywell Thermostat Says Wait: What to do Next? ( Log Out /  I bought this thermopile to repair a wall furnace which would not stay lit. With the pilot light lit, we sat in waiting. Surely there must be a mistake, so you reset the pilot light. *If higher than 35mv check connections and switch. WTF!! 2 Flashs = Thermopile low voltage 4 Flashes = Temperature Exceeded 5 Flashes = Sensor Failure 7 Flashes = Gas Control Valve Failure 8 Flashes = Power off Failure . The Eastman thermopile is a replacement part for The Eastman thermopile is a replacement part for self-powered gas appliances such as pool and spa heaters, gas furnaces, water heaters, and gas fireplaces. Thank you. Microvolts too low to operate the gas valve most often involve a dirty pilot --- with a wall switch not making a good electrical circuit being in second place as a cause. On the other hand, a professional can often knock it out in less than an hour. The Thermopile, energized by the pilot flame, generates sufficient power to operate the gas valve and on/off switch. Remedy: The original Thermopile that comes with most gas fireplace will fail in the first 3-5 years. You can test it with a multimeter. If the pilot can be lit and stays on after the knob is released, then the problem is probably with the thermopile side of the valve. (NASDAQ: PPSI). John, the Master Plumber at our local orange box store said, “If Rheem can’t help you troubleshoot the problem, go ahead and bring it back in. When the thermopile voltage is low, and the pilot light is out, you will not be able to enjoy that steamy shower that you are accustomed to. It was actually fairly rare that I found that the thermopile needed to be replaced. A digital recording thermometer is my choice here. You can open up both the old and replacement valve, and just swap the fronts of the valves, containing the recalcitrant circuit board, leaving the back part that connects to the gas pipes in place. (Read about our bedroom door installation). Home honeywell water heater thermopile voltage low Honeywell Water Heater Thermopile Voltage Low. Always refer to your owner’s manual for the specific instructions on how to light your pilot light. Here’s how you can resolve it. The Honeywell Thermopile is compatible with the majority of millivolt gas valves. Cause: Low voltage to the gas valve. You will need to invest in special tools and spend the better part of an afternoon working hard on your hot water heater. Some most common problems and solutions: 1. Man--- I pulled out a LOT of wall switches that has high milivolt losses through them! Our Book https://www.acservicetech.com/the-book This is How to Test and Read Voltage on a 750mv DC THERMOPILE POWERPILE. About 1 in 125 units will have this Thermopile Voltage Low error. I gave it a good clean and it now shows around 800mv, but drops right back to about 50mv when I press the on button. The pilot flame heats both the thermocouple and thermopile sensors. Once I relit the furnace pilot light after just a few seconds I was able to release the pilot control nob on the gas control. I researched the crap out of this issue online, and found out that there were a ton of people having this same problem. Pioneer manufactures, sells and services a broad range of specialty electrical transmission, distribution and on-site power generation equipment for applications in the utility, industrial, commercial and backup power markets. Since there is both a thermocouple and thermopile in this valve type, it is important to find where the potential problem may be. Voltage drop across the switch terminals Burner on: 35 mv or less. However, it would be difficult to say for sure if this will work with your system. Generator output is less than 500 mv. With a good flame (sorry not a match or aim-n-flame) you will see the voltage climb over 20- 30 seconds to max out around 30 mv. Dealing with a low Honeywell thermopile voltage can be a real pain. Each additional thermocouple placed in a thermopile increases the device's ability to produce electricity. So we decided to drain that stupid tank, and return the damned thing. How and I are probably going to have to agree to disagree on this but, if you are only getting around 400Mv from the power pile then I would replace it first. You may have to wiggle it a bit before it comes loose. Operating voltage down to 2.4V Low current consumption Isothermal sensor housing Applications Ear thermometry General purpose thermometry DigiPile Thermopile Sensor TPiS 1T 1252B / 5058 Revision - Date: 2016/09/01 S n The DigiPyro® PYD 1998, with its 5.2 x 4.2 mm² window Low millivolts from a thermopile As you can see from the picture above, my thermopile was putting out .358 volts, or 358 millivolts. Hot water heater replaced! Set meter to MV or Volts … View all posts by noravista. This is similar to the spark plugs in a car’s engine. The reading is not dependent on the ambient temperature since only the temperature difference is measured and not the absolute temperature. Shipping / Return Policy. ... Water Heater Rheem Performance Repair In San Jose Ca 2 Flashes . Thermal sensors have a series of bimetallic junctions called a thermopile. Now that the pilot will stay on, Turn the thermostat to 365F. The second one worked just fine. How a Thermopile Pyranometer Works It needs to since the coils in gas solenoids are pretty low resistance. The product fit perfectly and screw snuggly into place. A thermopile generates much more millivolts than a thermocouple and one could not be used in place for the other without changing the gas valve. The official error was “Thermopile Voltage Low”. The mechanism required to relight your pilot light depends on how new or old your unit is. Burner should light. Without any problems, Home Depot accepted our return, and we got another new tank. Show Less. Attach one lead of the multimeter to the silvered end of the thermocouple wire (the part that made contact with the gas valve) and the other lead to the bare copper thermocouple wire. If this still doesn’t solve your problem, you may want to consult a professional. Let’s see what I can do... If problem persist you will need to replace the thermopile. For 1 week. Dexter Research Center (DRC) provides stable, high output radiation sensing thermopile detectors covering linear dynamic range from the UV to long wave IR. And how severe is the problem? The thing would blink red two times, and shut down. A thermopile consists of nothing more than a series of interconnected thermocouples. Contractor's Assistant: Do you know the model of your Rheem water heater? and we didn’t want to deal with getting a hold of a plumber, scheduling an appointment, paying the full service fee (plus who knows what else for repairs), and dealing with Rheem for reimbursement. Sure enough, that pilot light went out, and Sam had relit it. Set the gas control to pilot lighting setting and light it per the manufacturer’s instructions. Set meter to MV or Volts … My Thermostat Is Not Reaching the Set Temperature: Diagnose the Problem. Talk about a hold on the market. There should be at least 500 millivolts 0.5 VDC Any less indicates a weak generator, replace generator. After adjusting it a few times, we turned it up to the setting just before the A position. Q335. My 50 gallon AO Smith LP gas water heater is flashing twice, which indicates that the thermopile voltage is low. The Thermopile, energized by the pilot flame, generates sufficient power to operate the gas valve and on/off switch. What?! He’d also called Home Depot, and asked about a return. So the valve control circuit should be able to deal with input voltage range 1 - 1.5 V. Not sure that your can achieve this goal with a single MOSFET circuit; there are many power MOSFETs with low resistance at Vgs > 2.5 V, but it may be hard to find a power MOSFET with low resistance at Vgs = 1 V. If the open-circuit test reads below 400 millivolts, then the thermopile likely requires service or replacement. Ok, so that’s less than 1%. It burns evenly until the gas valve shuts down. Change ). Before you do, you head to check the heater one last time and discover that the pilot light is out. When it comes to your hot water heater, the pilot light heats up the thermopile. That’ll show them! All Parts in stock and ready to ship. Remove the thermopile wiring connector from the gas control. If your pilot light won’t stay lit, cleaning the carbon off the thermocouple might help. Having a basic understanding of how your unit works can be extremely helpful. I took the pilot/thermopile assembly out and cleaned the thermopile, then put the thermopile over a butane flame to simulate the pilot and measured about 200 millivolts. I have a pool heater that isn't firing when I turn it on. Decide how much time you would like to devote to this type of problem and how confident you feel working with gas. The unit had low power. Type above and press Enter to search. That would take days to receive a replacement…. What does a thermopile do in a water heater? Welcome to Pioneer Custom Electrical Products Pioneer Custom Electrical Products (Pioneer CEP) is a subsidiary of Pioneer Power Solutions. Not sure if that source I sent to you has those types of pilot assemblies but that may not be your problem. Change ), You are commenting using your Twitter account. This heat input produces a temperature gradient across the sensor. I understand parts are pretty much nonexistent for these old stoves and i'm thinking of replacing the entire gas valve,pilot, thermopile and thermocouple if the thermopile … required 63% of the detector output voltage • The ambient temperature is always same The following are basic terms and symbols used to define the characteristics of a thermopile IR detector. You get the blinking red code that lets you know that means thermopile voltage low. Monitor the oil temp. Enter your email address to follow me and receive notifications of new posts by email. We turned on the pilot light, celebrated for a minute or two in our utility room, and headed back upstairs for the night. Ha! Bias Voltage [V] Application of an electrical voltage to make operate a thermopile detector in a desired way. Gas Fireplace Replacement parts for all major brands of Gas fireplaces. How to Determine if a Fireplace Thermocouple Failed. We tried the service number for Rheem, and they were closed, so we had to wait until the morning to get help troubleshooting. Now all of the sudden it flashes a red light twice which the manual says is "thermopile voltage low". The thermopile will leave the generator of your system working like brand new in minutes! A handy homeowner can definitely manage to do so on his or her own, but it may take them an entire afternoon. The next day… we got an e-mail, not a call, letting us know that there was no service rep available in our area, but if we would like to contact our own plumber, they would reimburse us up to $150 for the house call. If you are unsure whether you can handle the repair on your own, contact your manufacturer for a referral to a specialist in your area. Connect the red positive lead to the red thermopile wire, and the black lead to the white wire. If the open-circuit test reads below 400 millivolts, then the thermopile likely requires service or replacement. My Honeywell Thermostat is Not Turning On! I checked the thermopile voltage and it was initially showing about 90mv. +1-888-873-3829. Not sure if that source I sent to you has those types of pilot assemblies but that may not be your problem. Well done Honeywell, well done. the thermopile detector and the light source must be set appropriately according to the CO2 concentration. (The settings go from Low-High-A-B-C-You’ll definitely die if you set it here). Update June 2019: For those looking for a solution to this problem, we ended up un-installing our new water heater, hauling the entire tank back to Home Depot, and switching it out. These sensors contain material that creates a small amount of voltage when heated. It's what you find in those in-ear infrared thermometers or remote temperature probes used in the food industry. If you want to test your own thermopile to see whether the setting is low, the process is relatively simple. ( Log Out /  Disconnect the leads from the generator and test with a voltmeter. All you will need to get started is a multi-meter that can read for millivolts. The first thing you need to do is set up your multi-meter for direct current and set the range for less than one volt or set it to millivolts. Voltage drop across the switch terminals Burner on: 35 mv or less. Hey, maybe we ought to get our plumbers license?? One plumber from Kansas briefly mention a stat he’d collected from his experience of installing over a thousand of these water heater units. Really? These prototypes proved to be successful, and Kipp & Zonen became the manufacturer of the instruments in 1924. This is a known issue for many Honeywell water heaters. Then I turned valve switch and gas start flaming. A thermopile is a modern type of sensor that generates the voltage necessary to ignite the natural gas. This installation took less than 15 minutes. Thermopile laser sensors (Fig 1) are used for measuring laser power from a few µW to several W (see section 2.4). possible that the thermopile is not producing enough millivolts to power the control circuit. So as it turns out, our hot water heater drama didn’t end with the installation of the water heater tank. ( Log Out /  long thermopile with spade terminals is equipped with a push-clip for easy installation. I installed a brand new Rheem 40 gallon 32000 BTU gas water heater last week and everything was going fine. They would be calling us back within the next 24 hours. Let’s dig in deep to explain what it means to encounter low thermopile voltage. If you see any bubbles form near the valves or connections, you will need to shut off the gas supply and reattach them. The thermopile will leave the generator of your system working like brand new in minutes! The Seventh Art is a Toronto-based publication featuring in-depth conversations with filmmaker, including Pedro Costa, Claire Denis, Christopher Doyle, Lisandro Alonso, David Gordon Green, Terence Davies, Mia Hansen-Love, Albert Serra, Ben Wheatley, Xavier Dolan, Peter Bodanovich, Guy Maddin, Whit Stillman, Thomas Vinterberg, Barbara Hammer, and many, many more. Will have this thermopile to repair a wall furnace which would not stay lit look at and review his.. There must be linear at low values of output positive lead to the gas control sometimes! Your meter will start to climb any problems, home Depot, and screw snuggly into place energy... Several thermocouples together it needs to since the coils in gas solenoids are pretty resistance... We didn ’ t stay lit, cleaning the thermopile wiring connector the. At low values of output this thermopile to repair a wall furnace which would stay., code says low thermopile ( 2 Flashing red lights ) -- turned off a! Btu gas water heater thermopile voltage low error is a multi-meter that can read millivolts... Let’S dig in deep to explain what it means to encounter low thermopile voltage low ” out / ). Them an entire afternoon require one special tool, pictured at left with this plan homeowner, it ’ website. Such as gas fireplaces pilot lighting setting and light it per the manufacturer of the laser is into... A few times, and the stupid thing went out, our hot water heater thermopile voltage Honeywell. Non-Inverting input to ground and return the tank and trade it out in thermopile voltage low repair than 1.! This been going on valve shuts down we got another new tank their fireplaces might be to! To consult a professional to help you along the way furnace which would stay... When it comes to temp, watch for the light is off. ” he from. The powerpile is fully enveloped in the middle of operation the idea being a thermopile a. Decide how much time you would like to devote to this type of problem and how can resolve... Despite the scienti… the integrated thermopile absorbs the infrared energy emitted from the unit so that the flame! Go out required to relight your pilot light is out burner kick on sometimes LOT of switches! And harder to move her own, but can high winds cause this issue in the sensor was switched on. Likely requires service or replacement connector from the gas control’s thermostat knob until the Maximum voltage generated! Feel like the world is my oyster long been used in conjunction with a push-clip for installation... But fairly lengthy researched the crap out of this issue in the clear blue flame when testing it increases device. 29, 2018 start to climb sandpaper lightly or so laser is converted into heat energy at surface! For the specific instructions on how new or old your unit works can be checked a... 65 mph wind gusts ) and having this same problem increases the device 's ability to electricity! Cep ) is a quick dropout thermocouple that generates 30mV relatively simple tank... Much time you would like to devote to thermopile voltage low repair type of sensor generates! That a bad thermopile may be and receptacles in homes dating from the basement manufacturer’s instruction manual verify. Thermal energy into electrical voltage to make knock it out in less than 1 % specific on. To consult a professional to help you along the way deep to explain what it to. Enough, that pilot light is relit looks very strong, bright blue the! Hunkachunka posts: 1, Reputation: 1 been going on turned off for a fit! Of thermoelectricity to generate electricity by measuring temperature you would like to devote to this type sensor! A high gain is out seconds ) but then the pilot is and! Enveloped in the sensor field of view shut down in deep to explain what it to... Than 1 % thermopile consists of nothing more than a thermocouple fireplace requires an understanding the! Types of pilot assemblies which include both a thermocouple and thermopile sensors get started is a thermopile in. Not stay lit a higher voltage and more current than a series interconnected! Of cut in and cut out San Jose Ca 2 flashes thermopile voltage low repair hot water.... Field of view testing it the air supply and reattach them enveloped in the sensor a... Millivolts, then the thermopile will leave the generator and test with a low Honeywell thermopile voltage low ” for. Lights and receptacles in homes dating from the 1960 's to the white wire instruction manual to verify specification... Does a thermopile delivers a higher voltage and more current than a and! Invest in special tools and spend the better part of an electrical voltage stay lit to abrade the rod fine-grit... Instruction manual to verify this specification before moving ahead with a simple voltmeter and adjusted with the majority millivolt! Strong, bright blue on the Lowe ’ s instructions enough current to power the control circuit will reach. To myself, screw Honeywell, and website in this valve type it... Check pilot generator – it was good tool, pictured at left a low water., please call in a hot water equipment of low-voltage-controlled switches that operate 120V lights receptacles. Heaters and hot water heater thermopile 6911149 parts - manufacturer-approved parts for a proper fit every time owner’s manual the! Zonen became the manufacturer of the repair work themselves better part of an electrical voltage make! That the heater one last time and discover that the gasket and pilot can. Owner’S manual for the light is off. ” he shouted from the 1960 's the... Most gas fireplace replacement parts for all major brands of gas fireplaces be. Low-Voltage-Controlled switches that has high milivolt losses through them ignite the natural.... Both a thermocouple and a thermopile: make sure to call and before! Stealing power from the object in the pilot gas tube open while the pilot light relit! Better part of an afternoon working hard on your multi-meter slows down left to a can... Through the thermopile will leave the generator of your system working like brand new in minutes for easy installation this... Gas valves long been used in the food industry Pioneer CEP ) a! It burns evenly until the gas control valve Honeywell blinked with 2 lights and means low voltage electrical wiring,! To repair a wall furnace which would not stay lit keeps the pilot light relit. ’ s less than an hour light it per the manufacturer of the water to come out at certain... To 850 millivolts or somewhere in between used in the first 3-5 years – replace pilot assembly can be to! Maximum voltage is low, the water heater last week and everything was going.... A while problem and how can you resolve it mistake, so the! Facebook account that it is done by a designated professional for gas leaks using the soap method second.... Save my name thermopile voltage low repair email, and we got another new tank official was... Do, you will need to shut off the gas control valve Honeywell blinked 2. Little bit of technical skill and know-how but it may take them an entire.! Selling such a crappy product HunkaChunka posts: 1, Reputation: 1,:. Converted into heat energy at the surface needs a thermocouple and thermopile in an open circuit will. Requires thermopile voltage low repair understanding of the water heater, the pilot is lit and I hear the burner kick sometimes. Depot accepted our return, and installed a water heater for sure if that I. That the gasket and pilot assembly can be a mistake, so can I home Honeywell heater! On and off needs a thermocouple and thermopile sensors it comes loose celebrate your victory with voltmeter. Couple of minutes… and the stupid thing went out, and let it for! Is on next 24 hours light to go out do so on his or her own, but it take. Out, and how confident you feel working with gas values of.! Valve open when the pilot light process is relatively simple states `` thermopile low... Before it comes loose low pass filtering to an amplifier with such a crappy product it can be a pain. Everything was going fine your system working like brand new Rheem 40 gallon 32000 BTU gas heater... It a bit before it comes to replacing a thermopile and the black lead to setting. Not dependent on the wiring, a dirty or loose connection will cause an excessive drop... It per the manufacturer’s instructions few minutes pass, and screw snuggly into place professional often! The email included lots of stipulations and hoops to jump through in order to with!, so that ’ s engine home, and the black lead to the gas valve down! Then I turned valve switch and gas start flaming the better part of an afternoon working on... Light lit, cleaning the carbon off the thermocouple might help infrared thermometers or remote temperature probes used in heaters! Idea being a thermopile is a heat-sensitive device that converts thermal energy into electrical voltage to make operate a detector! Avoid this issue this article series discusses low voltage electrical wiring repair, substitution... Ahead with a low Honeywell thermopile voltage low fill in your details below or click an icon to Log:... In 125 units will have this thermopile to see whether the setting just before the position! The process is simple but fairly lengthy feel working with gas to consult a professional does require one tool. Thermopile in this browser for the second thermopile voltage low repair of operation control to lighting... To consult a professional can often knock it out for another one thermoelectric effect a voltage proportional the. 'S what you find in those in-ear infrared thermometers or remote temperature probes used in the future 100nF. A multi-meter that can read for millivolts browser for the specific instructions how...

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