The range is advertised as being able to be converted to LP gas but that, seemingly, is not the case. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. Pentair Mastertemp 400 won't heat past 79 . Equipment - Build, Use, and Repair. So, was going to need to be replaced at some point. The water circulating through the copper heat exchanger tubes absorbs the heat, and exits the heater a few degrees warmer than when it entered. It sits in a pool shed, with decent, not great ventilation. As of now, I’m at the mercy of my pool company? Again it will light up, and then the flame will cut out agian. What to do when your pool heater won’t turn on . Thank you. I know I can buy for much less through you guys or elsewhere online. Only the ThermoLink Titanium technology in these heat pumps uses a patented water management system that maximizes surface contact of pool water with the Titanium Heat Exchanger, another technology/design that sets this heat pump apart from the rest. So I thought that was causing the problem. I'm getting absolutely nothing after having my inground liner replaced over the weekend. Diagram showing how Pentair MasterTemp Pool Heaters work. When I finally was able to control again (for a time, keypad controls seemed to be disabled), I shut heater off, let it sit for a time. Please get it checked by a professional. The unit kicks on when requested, with the blower turning on to purge initially, the fuel valve opening and fuel applied (heat comes out of exhaust), but the fuel valve closes after about 20 seconds. Then without warning, it started flashing the following error codes: Ad0 then SF 1 then 888 then 128 then r13, then keypad screen would go blank. Does the heater say service system, or service heater? Parts last year heater that came on by itself and now wo n't … I'll bet the cone in the ignitian chamber is fouled. If you live in Phoenix Az you want your water temp to consistently stay at 78º can expect to pay approx $1384 in gas costs for the entire swimming season. Pentair Mastertemp Heater 460736 400K BTU Natural Gas. I think I am commanding only a 1 deg increase in temp, so although I can not see anything but “Ad0” I will wait and see if the burner cycles down as the water temp warms the 1 deg or so. And this is because your pool heater relies heavily on having a steady supply of water. I turn everything off and start over. Thread starter Secter; Start date Apr 21, 2018; Forums. Nat gas is roughly 1100btu per cubic ft, so your meter is undersized. Waterco Turbotemp Sta-Rite Max-E-Therm Pentair Mastertemp . It will heat up for about 30 minutes, then just shut off. I look forward to your advice. Hi Peter, when he says the heat exchanger is shot, he must mean that the copper tubes are leaking water, caused by erosion and corrosion from high water pressure or low pH and alkalinity, over many years. Posted Sat, 02/13/2016 - 13:17. in 1995. I am battling ice in my pool and hot tub because of the outage. $4100 is not cheap. George Hicks. Thankfully, the Pentair MasterTemp 400 won’t bother you when you’re lounging in your swimming pool. I have about 50' of 1 1/4" then it is reduced to about 10' 3/4" or 1" to the heater. I have a Pentair Master Temp 300 Pool Heater that is 6 years old. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. The Pentair MasterTemp 400 (460736) natural gas pool heater has proven itself to a long-lasting, energy efficient and reliable pool heater for homeowners.. It’s designed to be user-friendly with its rotating digital display that provides easy operation and monitoring. Just another way that Sta-Rite built a radically different heater. The spa is about 500+ gallons of water. Apart from being arguably the greenest pool heater (excluding solar), the Pentair 460805 MasterTemp has a lot going for it. You can search your local APSP member here: http://www.apsp.org/Consumer/LocateAPro.cfm?navItemNumber=786 I hope some of this information has helped. He said the heat exchanger is gone and it would be $2K to replace it all in or $4,100 all in for a new Max-E-Therm, 400 BTU LP, which they recommend. Check the filter . I sent the following on May 23, but received no reply/advice. It fires up fine, but about 15 minutes into heating the service heater light comes on and I am unable to turn it off with the power button and I have to unplug it to reset it. Is there a bypass valve open? Centerpoint really argued about it, even though we had to pay for the meter anyway. We've had no problems since we installed the new meter and we use our spa a lot. Pentair MasterTemp 400 cutout problem. I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. TROUBLESHOOTING OF AFS ERROR LIGHT LEADS ME TO FIND A COMPLETELY DIFFERENT AND MUCH MORE COMPLICATED AND EXPENSIVE ISSUE.DON'T ASSUME YOU HAVE A … Pentair Water Pool and Spa, Inc. USA – 1620 Hawkins Ave., Sanford, NC 27330, USA † (919) 566-8000 † (800) 831-7133 – INSTALLATION AND USER’S GUIDE (AUSTRALIA) MASTERTEMP™ POOL AND SPA HEATER DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or other appliances. Any ideas?? If the burners are not igniting, check for clogs in the burner orifices, you can ream them out with a tiny wire, just a strand. If you agree, which device is the most likely to fail and how does one test it. When I turn it on the blower comes on as well as the heater light starts blinking. Thanks for the help. Could the problem be with the flow or pressure sensors? When I turn it on the blower comes on as well as the heater light starts blinking. Locate the pressure switch on the front header, and test run the heater with a jumper wire connected to both terminals (or held in place firmly by hand), to ‘jump-out’ the pressure switch. I have replaced the Stack sensor thinking that it was the problem. Carlos, those symptoms are HLS – when it cools down, it turns back on. … I can't seem to get a straight answer as to what may be causing this. ent type of gas, consult your Pentair dealer. I have a MasterTemp 400 pool heater - it has been working without problems for years, then just yesterday will not stay running. I sincerely hope that this post has helped you solve your pool heater problem! $2,899.00 Standard Shipping - Ship To Home Want it today? The unit is about 1yr old. My Pentair Mastertemp 400 work for a few min and then cuts out. I tried removing spring on the flap and run the heater, the flap was opening in full, but heater was still giving me the same issue so I re-inserted the string back. Any help would be appreciated. The next day I powered “pool-on” and it registered the correct water temp. Don't give your pool and patio the cold shoulder just because the air is chillier. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. Range top is simply folded steel without the back corners being finished, leaving holes where the metal is bent. Gary, the flow and pressure switch, which sensor pressure, a proxy for flow, is the first place to look.Make sure the pump is pushing as much water as possible, into the heater. - Pentair MasterTemp heaters are engineered for super-quiet operation and won’t intrude on your poolside leisure time. After the power came back on and stayed on, the pool heater never reignited. It usually drips inside of the heater, making people think that their heat exchanger is leaking, when it’s not. for several minutes. Is the filter or baskets dirty, or impeller clogged? Pool safety doesn’t have a season, so if you’re having guests or hosting the holiday poolside, here are 3 ways to help you and your guests stay safe around your pool this winter. Hello But you'll need this expert design wisdom, Don’t let the lure of a great deal blind you to the hidden costs and issues in snagging a short-sale property, Whether you live in a drought-stricken area or just want to help preserve a precious resource, here are things you can do to use less water, Spend less time patching up partnerships and more time spackling and sanding with this insight from a Houzz remodeling survey, With mudroom organizers, laundry and a well-organized space for crafts, this basement puts a Massachusetts home in balance, When electricity loss puts food, water and heat in jeopardy, don't be in the dark about how to stay as safe and comfortable as possible, Dare you consider trading that 'coveted' design feature for something you'll actually use? I have a Pentair Heater. Heavy-duty (HD) unit with cupro-nickel exchanger stands up to the harshest of applications, like low pH, high flow or heavy use. It is very little power. We have a Pentair 300 for both spa and pool heating. New Stonescapes Pool surface cracks 10 days after filling... Goldline T-15 and Swimpure - Cracked due to freezing. 11 years ago. jgehlhaar. Ryan, start with water flow, make sure that the filter and baskets are clean and the filter pressure is normal, and water is not bypassing the heater, externally, or internally from the internal bypass, located in the front header. I am having problems with my Pentair Minimax NT. Advice? 3 posts / 0 new . Even when using a swimming pool heater, it is smart to use a liquid solar blanket, which is simple to use, and helps conserve water and heat by reducing evaporation, which saves you money. The Pool company said that it is probably condensation. Also, you can forget about simmering anything less than about 1/2 gallon on any of the burners other than the one simmer burner as, at the minimum setting, the flame is just too high and hot. Ask Your Own Pool and Spa Question. This is a very rewarding learning experience for me. The air space above the burners heats up, which heats the copper finned tubes laying on the top of the combustion box. The difference in design is dramatic – traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. SFS is stack flue sensor. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. It says is uses 80 W of power. Along with the fluctuation the heater cycles. This took several trips from Centerpoint, the PB and Pentair to finally resolve. Any additions, changes, or conversions required in order for the appliance to satisfactorily meet the application needs must be made by a Pentair dealer or other qualified agency using factory specified and approved parts. My Pentair 400 btu Spa Heater will fire and stay on for about 8 seconds and then goes off. A new pizza parlor or bagel store can draw a lot of cubic feet resulting in slightly less pressure for everyone. For example, AquaCal heat pumps feature a titanium heat exchanger as compared to other manufacturers who may use cupronickel alloy. It continuously bounces between pool and spa. How can I get it relit? Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. What is happening is we will use the heater to heat up the spa. Experience the revolutionary technology and energy-savings with the MasterTemp Liquid Propane 400K Pool and Spa Heater! This problem is fixable. Condensation is normal when the water is cold. The Service Heater light comes on when the heat shuts off, seems to reset after a minute or so, then the Service Heater light turns off and the spa starts heating again. In normal weather it works ok, but when it’s raining out (that’s my theory anyway), the heater won’t stay lit. The spa is about 500+ gallons of water. I think it’s a bit on the high side. My Hayward H250 gas pool heater won't fire. Then it came back on without my doing, switched to “spa” mode and commanded 110F setpoint. We activate both functions from a Jandy control inside the home There’s no code on the machine outside to indicate possible problems. I created jumpers to bypass each switch. MasterTemp® MasterTemp® heaters offer all the efficiency, convenience and reliability features you want in a pool heater, plus a lot more. I don’t see my trouble addressed. Be sure water flow is good (inspect internal bypass assy). We have 1 Pentair MASTERTEMP 400 HD manual available for free PDF download: Installation And User Manual . The biggest fear about the heat exchanger is that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. Learn more about the ThermoLink Titanium Heat Exchanger here: http://www.aquacal.com/thermolink-titanium-heat-exchanger With heat pumps, you need electrical, which when installing a pool should already be there for the support equipment. My Pentair Mastertemp 400 work for a few min and then cuts out. Either way you should contact a qualified service … This logic can help, Cover all the bases now to ensure many years of satisfaction with your full renovation, second-story addition or bump-out, Natural Swimming Pools: More Beauty, No Chemicals, 5 Risks in Buying a Short-Sale Home — and How to Handle Them, Wisdom to Help Your Relationship Survive a Remodel, Basement of the Week: A Creative Space for Kids and Storage for All, How to Prepare for and Live With a Power Outage, 8 Reasons to Nix Your Fireplace (Yes, for Real), 10 Tips to Maximize Your Whole-House Remodel. I replaced the thermistor and still have the same problem. After about 20 more seconds the heater light goes out and the service heater light comes on. The valve has to allow enough water into the heater, not too little, not too much. The blower will go through a cooling cycle and not come on again. Try this quick fix. What is happening is we will use the heater to heat up the spa. Pentair MasterTemp 400 natural gas heater won't ignite. Pentair - MasterTemp Liquid Propane 400K Pool and Spa Heater Item No. I connected my old termistor and got a reading of 85 degrees. A tough, rustproof composite exterior handles the heat and weathers the elements. 387224. We found that the valve just before the heater (3/4") was leaking so we replaced it. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. Replaced the thermistor probe, not the problem, not getting an error code, if I keep running, the heater ignites again and again turns off? Hot Tub Covers & Year-Round Outdoor Spas – Cover Smart. Good luck with your heater selection! Not only is the Noritz N-084M-DV powered by natural gas, it has a 236,000 BTU input. So you could save $1000 by buying online and having a company install. No error codes in front and no led error indicator on the back panel as well. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. jgehlhaar. I called Pentair tech support and they helped with some troubleshooting. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The only one lit is LED 11, which is the same led that lights up the service heater light when viewed from the front. Share this conversation. Sounds like you have a 315 cubic ft/hr meter, they are not rated in CFM. Last year after … Everything Else. Power would come back on for a few moments and then go back off. Which Pentair Pool Heater is right for you and your pool? It does heat the spa about 1 degree every cycle. Manufacturer SKU: EC-462029. So I’m very happy. My Hayward H250 gas pool heater won't fire. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. Hello, my heater didn’t turn on when I opened the pool. This is accessed thru the end cap, two bolts on the side of the header. When I hold it, the temp slowly went up to 90. I have a max-e-therm 200hd that the "service heater" light is on and it won't fire. Answered in 21 hours by: 11/23/2015 . Hi Lance, those are good ideas, first let’s think about flow rate. Sep 22, 2017 3 Dallas. That's a lot of gas just to heat water. They have a have an SF code for Sensor Failure. Turn off the power again to the heater for about 15 seconds than turn it back on.. It could also be just general humidity, and a very moist/humid area, not so good for circuitry. The heater does not ignite … read more. Waterco has moved on from these heaters. PitschPlumbing. It worked well as usual, heated water to 85F as commanded. The Service Heater light comes on when the heat shuts off, seems to reset after a minute or so, then the Service Heater light turns off and the spa starts heating again. Water pressure is fine and I don't have a way to test the gas pressure. Mapping. My Pentair MiniMax heater won't ignite. WHAT DO THE ERROR LIGHTS/LEDS MEAN ON THE BACK OF THE CONTROL BOARD?IDENTIFY EXPLAIN DIAGNOSE DIAGNOSTIC PS HLS AFS AGS SFS … How much did centerpoint charge for the meter. Possible Cause: Damaged or weak electrical connection Solution: If your pool heat pump isn’t receiving the power it needs from the breaker, then it won’t power on at all. Very low pH and alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. Also could possibly have circuit board problems. It’s also virtually silent and is contained in an attractive and very … An HVAC company would install it as well, or an Appliance company. fredm51 is right in the fact that heat pumps will save you money and depending on your geographical location as to which type heater would be the smartest choice for you. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. I scheduled a service call which improved the uneven heating somewhat, but didn't fix it. someone has suggested: I removed detached the terminal from the termistor and got an E01 error code on the panel. Gaztech1. I tested one, then the other and then both at the same time. Mastertemp 400 - Output : ~92kW . Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. The MasterTemp 400K has a rating of 400,000 BTUs. Pentair Mastertemp 400 Not Igniting. It is a sfs code, but with no e05 error code. Has there been any new construction in the area? No luck. It calls for heat, heat starts for maybe 5-10 seconds, then stops, temp raises rapidly to 124 then slowly back down to 75 and cycles again doing the same thing over and over again. Can you give some thought? I has this same problem when they first installed the heater but then it started working after serveral attempts but that strategy isn't working this time around. View and Download Pentair Pool Products MASTERTEMP 250K BTU/HR installation and user manual online. We have a Pentair minimax 100 Dsi. This same problem appears with the burners, as there is virtually no difference in the flame/temperature in the range from "Super Boil" through medium. I'll let you know tomorrow. I have a 1 year old heater that only tonight started heating, then would cut out, light the service heater light, run a while more, then relight the … I would also have preferred to see 2" used as the feed but with a 250K, it isn't required. Normally you can smell a little gas when it kicks on but it does nothing. This is the most recent review I have read. In cooking a pizza, for example, one side will be burnt and the other fairly raw. It’s also compatible with control systems from other manufacturers so don’t worry about mixing and matching. I am having the same issue with the MasterTemp 250. It does heat the spa about 1 degree every cycle. When problem started happening last early last year, one of the thing I did was replaced a broken Jandy check valve between the heater and chlorinator. Check the wire going to the sensor and the sensor itself. Category: Pool and Spa. Installing a pool heater is not simple, but is done DIY all the time. Inside the front header, where the pipes come in and out, there is an automatic bypass device that could be broken and allowing too much water to bypass. I only found 1 small stone stuck inside where the bypass is. We use cookies to give you the best possible experience on our website. Eco-friendly, the MasterTemp gas heater is certified for low NOx emissions and outperforms industry standards. Trouble shooting a mastertemp that will not turn on when buttons are pressed. Start Saving. Folks, I'm sure this has been answered a bunch of times here before so forgive me -- I did a search but did not turn up something specifically for this problem. Last post. After just a few minutes on heating, the burners shut off, before the water is warm. Explanation Of The Different Pentair Mastertemp 400 btu Models. Pentair said to check the High Limit Swith and the Automatic Gas Shutoff Switch. View and Download Pentair Pool Products MASTERTEMP 250K BTU/HR installation and user manual online. To begin with, the small non-convection oven does not heat evenly but has "hot spots". Does anyone have any recent experience with propane? But, need someone to do the work, etc…so, probably need to order it through this small, local company, right. 400 comes on it goes directly to spa instead of pool the of. POOL AND SPA HEATER 120/240 VAC NATURAL GAS/LP GAS. Pentair UltraTemp Eti Hybrid Heater 462042 220K Propane Pentair Hybrid Eti … Then I commanded a higher water temp, and heater came on as it should, reaching set points and shutting off burner as it should, then cycles on as water temp dictates. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? I only own a pool. Let us know if you need help finding it. I called Pentair again and they said it is water pressure or gas pressure. Pool/jacuzzi heater was not turning on. Comment: The Pentair Mastertemp 400 Heater will not turn off. I have had some intermittent problems of the spa not heating up to 96 degrees with the portable controller display showing more than 100 degrees while the water is about 90 … With gas or propane heaters you will need to consider if you already have those services at your home or if they are available in your area and what it will cost to run lines to the heater and fuel costs to run the heater. Oct 15, 2015 #1 I'll start by saying I have read through all the posts on this type of issue that I can find and have tried just about everything noted in them. More Details Quantity. Any ideas on what the problem could be? Millivolt ignited heaters don't require any external electrical power and operate on gas power only. I have a 4 year old MasterTemp 400 … They said the 126 display was an error code. The same is true for the StaRite Maxetherm heaters. Hi Hugh, is it a Hayward heater? The unit is about 1yr old. 3 posts / 0 new . Max-E-Therm® The Max-E-Therm® features sleek, contemporary styling that offers pool owners an easy choice over the traditional-style. Learn more. Or, you can buy not just the tube assy, but the entire heat exchanger assy, which includes headers and everything, and of course is much more expensive. master plumber. Very disappointing and not particularly well made. pentair mastertemp 400 won t turn off. The only other natural gas item that is running is the water heater. How to Reduce Pool or Spa Chlorine Levels, http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf, Energy Awareness Month – 7 Ways to Save Around the Pool, Has Fall Landed in your Pool? The heater will stay on and keep running continuously up until say 82 degrees. Solar heating is gaining traction in the pool industry also. Here are the video links. Pentair Master Temp 400 - got an HLS error light on the back of the gel touch circuit board of the heater control panel. When your swimming pool heater malfunctions, troubleshooting the source of the problem can be more complex than working with filters or pumps. George Hicks. That’s acting like a bad circuit board, but it would need testing to be certain, could also be moisture behind the display panel, near the circuit board. It's kinda strange though it fires up but won't stay on but for a few seconds and then shuts off. Pentair MasterTemp offers all the efficiency, convenience and reliability features you want in a pool heater, plus a lot more. Yes, the LP orifice kit does come with the range, but no, the range doesn't work properly on LP gas. IF it stays running, first look for a cause of overheating, such as poor exhaust thru the heat exchanger or out the top, or debris on the burner tray, or low water flow, or it could be a faulty hi-limit switch (there are two hi-limits, a 135° and a 150°. Given the heater is 15 years old, it is possible this is happening. 11 years ago. 185 satisfied customers. You may have hit the threshold. Another thought is that the internal bypass, in the front header/manifold, may be broken or stuck open, allowing too much water flow to bypass, which causes the water in the heater to over-heat? Frank. The temp display fluctuates wildly from 70 to 90 degrees and anywhere in between. We heat the pool at least once a month during cold weather as we entertain swimming kids/grandkids at least that often. Heat exchangers, when they fail and leak, they develop pinholes in the copper tube, or may also leak at the point where the tubes are welded to the end plate. Be sure all connections are clean and tight. Master Plumber. Gentlemen, Today I saw that the multiple error codes i noted above are back, and heater controls seemed to be disabled (it rained all day yesterday, but I could hear the heater cycling on and off yesterday as water temp dictated, though overnight it was damp and foggy). Checked the screen on the Gas Control Valve it was clear. View Rebates. Hi,e repl It also shows a 135 W for freeze prevention. … What should I do? Just check that the action works, and that nothing looks broken, although that is hard to tell with the thermal regulator, which is like a radiator cap that opens at a temp set point. So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. when temp is down it kicks on as soon as it goes over setpoint it shuts off. Older style heaters use a low horizontal manifold supplying dozens of individual burners across the bottom of the burner tray, shown at left. But, is there a way that I can validate that there is really an issue? The board may be ‘fried’, but do a complete power down, at the breaker, pull open the control panel, and inspect, clean the area, and look for signs of water intrusion. When I turn it on the blower comes on as well as the heater light starts blinking. Thank you for your time and response. On the back of the control pad the AGS light is on. Item # Description Gas Type BTU (000's) Dimensions Weight … A 400,000 BTU pool heater can be a huge and noisy beast. ... anything suggested here would be nothing more than speculation, not unlike asking why a car won't start without any extra info given. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. Pentair Water Pool and Spa, Inc. USA – 1620 Hawkins Ave., Sanford, NC 27330, USA † (919) 566-8000 † ... MasterTemp 2) Model Size: (200, 300 or 400) : Input rating (Mega Joule [MJ]/hr) 3) Construction : (HD = Heavy Duty Model) 4) Fuel Type : (LP = Propane gas or N = Natural gas) MT 300 HD MT = MASTERTEMP MODEL SIZE = MJ INPUT = Mega Joule [MJ] / HR H. I. N. HEATER … TROUBLESHOOTING OF AFS ERROR LIGHT LEADS ME TO FIND A COMPLETELY DIFFERENT AND MUCH MORE COMPLICATED AND EXPENSIVE ISSUE.DON'T ASSUME YOU HAVE A … Pentair MASTERTEMP 400 HD Installation And User Manual (54 pages) POOL AND SPA HEATER. I also noticed that I couldn’t completely open the valve on the return lines. How to Troubleshoot Swimming Pool Heaters. Locations should set the valves to bypass when closing down the … 1st one is the initial issue. The Service Heater light comes on when the heat shuts off, seems to reset after a minute or so, then the Service Heater light turns off and the spa starts heating again. MasterTemp and Max-E-Therm Heater Direct air Intake Duct with 3 inch PVC Pipe Kit Installation Instructions - English ; Heater Checklist; Heater New Installation Checklist English - French MaxETherm Heater Burner System; MaxETherm Heater Electrical System; MaxETherm Heater Water System; Specifications. Check the breakers and make sure they are on. This goes on and on until the … We have a Pentair MiniMax Plus 400 pool/spa heater. Have a pentair minimax heater, spa heater turns on for a few seconds then goes off, fan is on, blower is on, when heater fires I do smell gas and the air is hot. I’ve got a Pentair MiniMax 100 natural gas spa heater. Curt could be a short in the thermostat wire, or the thermostat could be going back, check the wire connections for rust/corrosion. The single glowing burner is aided by the blower fan, which regulates the correct amount of exhaust and is plays a large role in correct combustion. It’s new to me, but approximately 12 years old. By contrast, the Sta-Rite Max-e-Therm pool heater design, now adopted by Pentair, has stacks of circular heat exchanger tubes, surrounding a combustion cylinder. I have a Purex triton minimax model 350, with electronic ignition, serial # E00596037 built approx. Pentair MasterTemp 400 cutout problem. I should’ve tried harder to learn how the pool works.
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