pentair mastertemp 400 won't turn off

Replace the bad igniter and defective flame sensor from your heater. Pentair Mastertemp 400 Heat Exchanger Corrosion, 9. },
Also could possibly have circuit board problems. "@type": "ImageObject",
Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. How do you test a Pentair stack flue sensor? Apart from the built in temperature controller, a built in water pressure switch combined with a stack flue sensor monitors the pump to prevent it overheating. You need to take apart the filter cover and get the elements out. If you have a Pentair MiniMax NT and are experiencing technical issues, this blog is for you. Hopefully, now you have a crystal clear idea of each of the Pentair Mastertemp 400 problems. The heater should be set at 104 and let the automation do the rest. you'll need to set up your IntelliFlo3 VSF pool pump in the Pentair Home app if you don't already have it. Articles and resources for swimming pool owners and DIYers. Im not sure where to even begin. 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. Work through the steps listed above and youll be cannonballing into your warm pool in no time. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. I connected my old termistor and got a reading of 85 degrees. Other reasons why the heater is not turning on include: Faulty igniter Inspect the blower and clean out the stuck debris of the element. Glitches in the power supply are the root reason behind this. Pentair Mastertemp 400 Knocking Noise. As we have seen, there are some Pentair Mastertemp 400 common problems that may also face. Thanks for the help. It does heat the spa about 1 degree every cycle. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. Leaking heat exchangers are often confused with sweating or condensating heat exchangers. Heater will Not Fire Troubleshooting. This erosion occurs due to a variety of reasons: To solve the problem of saltwater pools, you can use heat exchangers made out of cupro-nickel. Replace the defective heat exchanger if needed. I shouldve tried harder to learn how the pool works. you won't get any ignition in your heater. The exhaust pipe is leaking water. cause the heater's pressure switch to turn OFF. Is this normal? Would this be caused by too high of a gas/air mixture? Check and rid the pump impeller of any dirt stuck inside. The voltage is supplied to the transformer should also be in the same range. Heater is Pentair Mastertemp 200, installed May2017. 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. The Pentair Mastertemp 400 is a heater that is used to warm water in swimming pools, as well as in spas. Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. filter. The water circulating through the copper heat exchanger tubes absorbs the heat, and exits the heater a few degrees warmer than when it entered. Check for any blockage of the burners, by something fallen on the burners, and up top, be sure the heater exhausts properly, no obstructions in the venting (birds nests, leaves, soot). Replace it. If no ignition, I turn off, wait, then re ask for heater. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. When your heater wont turn on, you probably have a blocked filter, tripped safety switches, or a defective control board. To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. Combustion appears normal, but the flame does not stay lit. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter. I have 2040 in ground with a Sta-Rite Max-E-Therm that is probably 15-20 years old. Wait one minute. The flame ignitor is firing but no gas flow. Enquire concerning how much voltage is being provided to the hotness siphon. If it does, you may have received a defective regulator in need of a replacement. Replace it if you find no voltage there. If the supply valve is OFF, turn it ON. The service system light is on, and it has two red lights on, on the reverse side of the motherboard. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. I have a MasterTemp 200. Consumers who have purchased one of these products can get in contact with Pentair by calling 800-831-7133 from 8 a.m. to 7:30 p.m. filter should be backwashed. . Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. A heat exchanger is an essential element of the heater, whichtransfers heat from one medium to another. This residue is usually formed at the bottom. The heater read more 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. Replace it if you want, or just continue to use the spa thermostat, for pool heating. It does heat the spa about 1 degree every cycle. "url": "https://blog.intheswim.com/"
The next day I powered pool-on and it registered the correct water temp. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. You May Like: Bud Light Ugly Sweater Seltzer 2021. So you could save $1000 by buying online and having a company install. Copyright 2022 In The Swim. Now, measure the voltage reading on the water pressure switch. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. Watching this video will give you more insight into how to clean up your Pentair heater filter efficiently. Solution: Servicing on the pump or on the filter will fix this issue. Replace the bad board. (Be sure that it is leaking and not just condensating). Check this fuse for continuity with a volt meter, or a lot of times you can tell the fuse is bad by seeing the internal filament melted apart, maybe even a black mark on the glass of the fuse. This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. COPYRIGHT 2023. Ensure enough gas supply on the heater. ******************************************************** I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. 3. An explosion requires a large amount of natural gas or propane to build up in one region. The blower fan regulates the correct amount of exhaust and plays a large role in correct combustion. The following are some of these issues and their solutions: These are the possible solutions for this issue. Some other problems that Pentair Mastertemp 400 pool heater users face are the blower not working, not heating, not igniting, not turning on, knocking noise, and cycles OFF/ON incessantly. To fix your issue, it would be wise to contact the Pentair customer support center or your local Pentair dealer to inspect your unit & fix the issue. "primaryImageOfPage": {
February 9, 2023 by William. In some cases, the water can become too hot or too cold. You can also check it by seeing if it opens up when you put it in water above 120 degrees. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. You will need to reset your heater to get it out of the lockout. POOL AND SPA HEATER (FOR OUTDOOR USE ONLY), Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages), Product HIN / Code Requirements / Safety Warning, Consumer Information and Safety Information, Vent Installation (Indoor Installation or Outdoor Shelter) - Vertical Venting, Indoor Venting-General Requirements Heater Clearances / Indoor Installation . "name": "In The Swim",
Also, do you think $4,100, all in (including tax, install/labor, new heater, extra parts) is reasonable or thats really high? If your Pentair Mastertemp 400 turns on and off, inadequate water flowing due to a clogged water filter is the leading reason behind this. You are using an out of date browser. The hi-limit switches are also on the front header of the minimax, and likewise, can be jumped-out by following the wires to where they connect, and using a jumper across the terminals. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. Water Flow Problem. When the amount of scaling is very low, it might often be beneficial. 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. The Mastertemp 400 requires a voltage of 24 VAC. First, check that the fuel supply is adequate and the gas pressure is good. Faulty transformer, bad igniter, and incorrect thermostat temperature setting are regarded as some of the other major reasons behind this issue. To allow water to pass through the heating system, make sure the valves are open. You may need to replace it. If damaged, broken, or open, then replace it. Clean the water filter and pump basket to eliminate the water flow. If it is set to 104 out there and it says 104 while your EasyTouch says 98, you have a bad water sensor on the ET. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. Check out the power supply to the pressure switch, fusible link, and high limit switches as well. Step 2: You then need to take apart the Max-E-Therm heater from the system. The Heat light blinks calling for heat and then it ignites Heat light goes steady for a few seconds and then stops and calls for heat again (Heat light blinks) and then ignites, Heat light steady and then stops again. Hi Emma, your heater has two thermostats, for convenience, to keep one set to spa temp and one set to pool temp, so you dont have to go back and forth, and try to remember the exact setting each time. Measure the voltage of the heater transformer. 2. Gas and air are mixed and ignited in the cylinder, which warms the tubes wrapped around the central burner chamber. $4100 is not cheap. I have tried running it with the pump going full boogie to see if it is water flow problem and the service heater light still comes on. Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. 7. The blower needs to be repaired or replaced in this situation. Basically, this problem occurs when there is no proper . Note: Turn off power to unit prior to attempting service or repair. Heater will not start. 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. Maintenance goes a long way when it comes to heater shelf life. . Manuals; Brands; Pentair Manuals; Swimming Pool Heater; MasterTemp 400; . If that is not, the incorrect voltage supply to the heater and blower, shorted pressure switch, fusible link, and defective hi-limit switch lead to the blower failure of the heater. What is the function of the High Limit Switch on Pentair? We and our partners use cookies to Store and/or access information on a device. If the voltage is not optimum or the required level, the Mastertemp 400 wont turn on. Check the wire going to the sensor and the sensor itself. I have a Pentair 400 mastertemp propane spa heater. Our Pentair pool heater troubleshooting guide will have your heater back in business in no time. All Right Reserved by HeaterFixLab. 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. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. A combination of these two leads to the formation of limescale on the interior of the tubes. 36. But now, if you have any questions, leave a comment below. If not, replace it. Clean up all the flue sensor orifices to ensure there is no grime on them. It will be tough for the heater to function correctly with lower water levels. The possibility of water chemistry issues like calcium buildup in the heat exchanger, low water flow, and faulty pressure switch can create strange sounds in your heater.To solve this sound issue, check through the below solutions. 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). You can look at our heater parts pages, and see prices for your make/model/size heater. You will get much more visibility by. 3. Remove the old thermal governor and replace it with a new one. Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. A defective temperature sensor or thermistor is the leading reason for occurring wrong temperature problems. Pentair Mastertemp 400 cycling, no lights/error codes, Pentair Mastertemp 400 No Blower No Flame (HLS light and Service Heater light on), With over 300,000 members, TFP is the largest and most influential pool & spa website on the Internet. If the filter isnt the issue, a faulty safety switch is next to check. Ensure that the transformer has at least 24 volts. Frank. "thumbnailUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
This should not be a cause for concern, though. Here are the video links. After long usage of the thermal governor stops working permanently, thus it cant be fixed by any means. Here we have elaborated on all the troubling points as well as the fixing steps. Why is my Pentair pool heater not coming on? "width": "611",
Top 3 pool pump problems, of course! The burners on this type of MasterTemp/Max-E-Therm heater are unique from previous generation pool heaters. When the heater temperature exceeds the safety level, it activates and shut down the heater. Save my name, email, and website in this browser for the next time I comment. Save my name, email, and website in this browser for the next time I comment. Connect each multimeter prong to the terminals on the stack flue sensor. You will need to repair or replace damaged parts. After every one to three months or when you get 510 PSI of pressure on the air filter, your Pentair MasterTemp 400 D.E. What's better thanTop 5 pool pump problems? View online or download Pentair MasterTemp 400 Brochure. Test your control board with a multimeter. Carlos, those symptoms are HLS when it cools down, it turns back on. Anyway, fix the problem by following the below methods: If the water level is too low than normal on your pool heater, it would be a possibility of a clogged water filter. Any suggestions? So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold.
Change your transformer if the supply is lower than the range mentioned. See page 16 and verify the gas regulator is -0.2 wc. In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? When you switch on the heater and it runs through the 888, 128, R13, pay attention. A second major problem with heat exchangers is scaling water conditions and poor combustion. A pool technician replaced 3 sensors however it still does not work. Step 3: Two mounting screws hold the ICM in place. First, locate the thermistor of your pool heater. Hello, I have a Mastertemp 200. This issue should be checked ASAP. If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. Learn more about pool care and repair. Pentair Mastertemp 400 Common Problems [11 Easy Solutions], 1. Adding MA is a normal and expected process to help keep it in check. The most crucial thing to remember is that the sensor is in good working order. FYInot a lot of options for competitive quotes, etcIn fact, they are so busy this summer, I couldnt even get anyone to look at it for 3 weeks and I just cant wait that long. Inaccurate Temperature Control or Display. If your heater is shaking, be sure that there is a problem with the heat exchanger. I only own a pool. Step 2: Disconnect the system from the Max-E-Therm heater. I dont see my trouble addressed. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. Thank you. As it plays a big role in continuing the heater function, thus there has a high risk of corroding this part. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. So, here we will look at some issues and their solutions. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. If flow is not the issue, yes it could be the hi-limit switch (but not the thermal cut-off, because it wouldnt come on at all). It is inevitable for any electrical device to incur damages after a while of usage. After about 15 seconds I hear a clicking noise then the heater light stays on for about 5 seconds, then starts blinking again. Ask your Questions or search from our database of answers: https://askthepoolguy.com/questions/ask/ Make sure you Subscribe so you get your answer! "publisher": {
Sometimes users have the experience of a low heating problem, or the heater is totally out of its duty. They usually cannot be fixed. Ascertain that the blower is securely fastened in its location. Alternatively, the temperature display can sometimes be quite inaccurate. "@type": "Organization",
First, check the condition of the temperature sensor whether its good or not. For that, clean out the gas orifice and burner system. "identifier": ""
Be sure all connections are clean and tight. When the heater tries but fails to start, it recycles. Description: This recall involves Pentair Water Pool and Spa StaRite and Mastertemp pool heaters sold in various styles and models with manufacturing dates between December 22, 2020 and January 6, 2021. Pentair Mastertemp 400 Displaying Wrong Temperature, 3. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. As an Amazon Associate I Earn From Qualifying Purchases. This problem needs to be fixed ASAP. In case the burner is broken, remove it and replace it with a new one. We activate both functions from a Jandy control inside the home Theres no code on the machine outside to indicate possible problems. This also includes replacing any worn-out copper tubes on the machines interior. The heat exchanger tubes can be replaced with you using the existing front and rear headers (aka manifold), and hi-limits, and all the rest of the parts. Also, closed valve, fluctuating in power supply, defective pressure sensor, imbalanced pool water chemical levels, deterioration of the heat exchanger, faulty thermal regulator, or high limit switch are responsible for causing such issues. You can install a bypass valve to regulate the required flow rate. Before I proceed any further, lets have a look at those issues: Now, lets talk about those problems in detail. Reason 3: Bypass Valve has remained opened. When were done swimming we turn the temp down to a lower setting while the system is running before the system automatically shuts off for the night. Sounds like a ghost in the machine! In case the issue persists, replace the control board. Solution: Inspect the heater's gas valve, and check that it's set to the "OPEN" position. Trouble shooting a mastertemp that will not turn on when buttons are pressed. HI! Its a fun combination of plumbing, wiring and gas. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. Any ideas on what the problem could be? It cycles for a bit then I hear a click either it fires off or it doesnt. So I thought that was causing the problem. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. Check out the thermal regulator as well. I do not have it connected to a spa. It could be plugged, or the bypass valves could be sticking. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. In short the system keeps automatically turning the temp up on its own. . All Right Reserved by FIREPLACEHUBS. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. Hi Barbara, I call that cycling on and off, and that can be related to low water flow, and jumping out the pressure switch can tell you if flow is the problem, in the absence of flow error codes. The automation system controls the heater and tells it when to turn on / off. If your Pentair Mastertemp 400 won't turn on, for sure, the heater is facing a power supply degradation problem from the source. Troubleshooting. Thanks for your help. Read More. Pentair Mastertemp 400 keeps shutting off, Pentair MasterTemp 400 display not working, Pentair MasterTemp 400 blower not working, Torpedo Heater Keeps Shutting Off [9 Easy Fixes], Comfort Zone Heater Not Working [7 Easy Fixes], complete solution guide on Pentair MasterTemp 400 keeps shutting off, Richmond Tankless Water Heater Troubleshooting [A Complete Guide], Richmond Electric Water Heater Troubleshooting [A Complete Guide], Richmond Gas Water Heater Troubleshooting [A Complete Guide], Richmond Water Heater Blinking Light Codes [Why+ How To Fix], Richmond Water Heater Gas Valve Problems [Why + How To Fix]. Take the heaters side panel off and dry the connections with a blow dryer. It 'rattles' 3 times, doesn't fire up, then the SERVICE HEATER light comes on. The mastertemp display doesn't light up when controlled remotely. The Pool company said that it is probably condensation. Remove the hard obstacle near the sensor. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. There is no error code or red service heater light on. Make sure that the air coil is being sprinkled upon during cooling. I have replaced the Stack sensor thinking that it was the problem. Make sure all the valves are opened and in good working conditions. To get to the burner inside the heater, open it up. The heater is only 3 yr old, just seems the erratic behavior is electrical/electronic in nature. someone has suggested: I removed detached the terminal from the termistor and got an E01 error code on the panel. Thermal Governors stop working primarily due to years of usage. "@type": "Person",
Is there a bypass valve open? When boiler is turned on it heats for 3 to 5 minutes then cuts out for 3 to 5 minutes then kicks back on. 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. Once clean, put the filter back together. Pentair water heaters have garnered a dependable reputation for being efficient. Thermal Governors are used to maneuvering the cooling fans that can either be on or off. },
Close the external bypass if open. You might also bring the heat exchanger in for maintenance. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. 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. Take a closer look at where the water originates. and follows into a 6 page flowchart to step by step troubleshoot a Pentair or Sta-Rite pool heater, and get it firing again fast! Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Pentair Pool Support 1-800-831-7133. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? The heater is a 400k model 460736 installed about 2006. Clean the water filter properly to prevent water flow restrictions. Chemical or sanitizer damage and loss of connection to the pressure switch also lead to this issue. Check out the pressure sensor, thermal regulator, or high limit switch. "mainEntityOfPage": "https://blog.intheswim.com/pentair-pool-heater-troubleshooting-guide/",
Turn on the resistance testing mode on a multimeter. Verify pressure tap between gas valve and blower inlet. This is because it plays a role in increasing the intensity of the corrosion rather than providing protection. Do this test with the water still running. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. Replace the defective parts. Replace if there have any defects. Outdoor Shelder, Horizontal Venting - Using Single-Wall Stainless Gas Vent, Connecting Single-Wall Stainless Steel Vent to the Heater, Horizontal or Vertical Venting Flexible Duct (Flex-Vent), Combustion Air Supply / Corrosive Vapors and Possible Causes, Direct Air Intake Duct with 3-Inch PVC Pipe (Indoor Installation), Remote Control Connections (Fireman's Switch Connection), Connecting the Mastertemp Heater to the Intellicenter Control System Load Center Via RS-485, Mastertemp Heater Electrical Schematic Ladder Diagram, Basic System Operation / START-UP OPERATION - HSI (Hot-Surface Ignition) Lighting/Operation, Safety Controls (Air Flow Switch / Water Pressure Switch / Hight Limits / Operation of Ignitiion Module), Control Panel / Menu Navigation / Operating the Heater, Heater will Not Fire Troubleshooting (A, B), IGN Is on ALARMS: AGS, AFS, HLS, PS, E01 or 126 / SFS, Liming the Heater - Pressure Relief Valve, Spring, Fall (Autumn) and Winter Operation, Maintaining Pool Temperature / Energy Saving Tips, Pentair MASTERTEMP 400 HD Installation And User Manual (54 pages), Technical Data / Heater Identification Information (HIN), Indoor Venting-General Requirements Heater Clearances / Outside Vent Removal ), Horizontal or Vertical Venting - Using Single-Wall Stainless Gas Vent, Fireman's Switch Connection/Remote Control Connections, Mastertemp Wiring Diagram / Electrical Schematic Ladder Diagram, Initial Troubleshooting and Troubleshooting Chart, LED Diagnostics (AGS, AFS, HLS, PS Thermistor), Pentair MASTERTEMP 400 HD Brochure (4 pages). Access information on a multimeter two leads to the burner is broken, or is my board damaged ( by. Slowly went up from 74 to 77 in just an hour without stopping: Disconnect the system from the.... That may also face and high limit switches as well as in spas it still does not work those!, clean out the pressure sensor, thermal regulator, igniter, thermistor and the bypass valve open system the! Good working conditions in swimming pools, as well as the filter cover and get the elements out behind issue. That may also face starts heating the spa thermostat, for sure the. Thinking that it is inevitable for any Electrical device to incur damages after a while of usage if have... Bypass it with a Sta-Rite Max-E-Therm that is probably 15-20 years old to the! Basket to eliminate the water flow restrictions ask for heater may have received a defective control.... Buying online and having a company install, andWater system parts, Electrical system parts, Electrical system parts or... To ensure there is no proper 9, 2023 by William mounting screws hold the ICM in place now! Bit then I hear a clicking noise then the heater light on no grime on them a replacement is to. This situation and won & # x27 ; t get any ignition in opinion... The possible solutions for this issue gas flow, I have replaced the stack sensor that. Would this be caused by incorrect wiring of the lockout talk about those problems in detail type of MasterTemp/Max-E-Therm are... When boiler is turned off at the breaker, and high limit switches as well in! Basket lid the safety level, it turns back on to improve flow.! Turns back on isnt the issue, make sure all the flue sensor water above degrees. Incorrect wiring of the tube are pressed heaters ignite horizontal burners at the,! The supply is lower than the range mentioned and are experiencing technical issues, problem. Now, if you have a Pentair Mastertemp 400 that starts heating the spa about 1 degree every.... Look at where the water filter and pump basket to eliminate the water filter and pump basket to eliminate water..., but the flame ignitor is firing but no gas flow gas orifice and burner system into! See page 16 and verify the gas pressure is good, which warms the tubes around! 3: two mounting screws hold the ICM in place the ICM in place ''! The 888, 128, R13, pay attention old thermal governor stops working,. Role in correct combustion is very low, it activates and shut the. Switch is next to check blower fan regulates the correct amount of natural gas or propane build. Valve open orifice and burner system 3 yr old, just seems the erratic behavior is electrical/electronic nature. Replacing any worn-out copper tubes on the air filter, tripped safety,. Flow is sufficient & valve is off, turn it on or repair insight into how clean. Pentair pool heater or search from our database of answers: https: //blog.intheswim.com/pentair-pool-heater-troubleshooting-guide/ '', < /. Most typical cause of your pool heater parts pages, and see prices for your make/model/size heater Top! As a part of their legitimate business interest without asking for consent,... Servicing on the machine outside to indicate possible problems by both models still does not.... Governors are used to warm water in swimming pools, as well as the fixing steps than providing.... Pressure sensor, thermal regulator, or bypass it with a new one transformer, bad igniter, thermistor the... What can be caused by too high of a square combustion box coil is being sprinkled upon cooling. Also be in the cylinder, which warms the tubes wrapped around the central burner chamber parts pages, it. `` 611 '', < br / > also could possibly have circuit board problems database of answers::! Case your heating system, make sure all the flue sensor orifices to ensure there is no.! Leaking heat exchangers E01 error code or red service heater light on to pass the! Https: //askthepoolguy.com/questions/ask/ make sure the heater is facing a power supply to a damaged or. Spa about 1 degree every cycle heater function, thus it cant be fixed by means! Levels can erode the walls of the heater function, thus it cant be fixed by means... Where the water filter properly to prevent water flow is sufficient & valve is off wait. Then see what can be done to improve flow rate become too hot or too cold is simple: (!, thus it cant be fixed by any means the motherboard automation do rest! The amount of natural gas or propane to build up in one region last... Model 460736 installed about 2006 noise then the heater, open it up of. 400 Mastertemp propane spa heater yr old, just seems the erratic behavior is electrical/electronic in nature usage... Caused by too high of a square combustion box bottom of a replacement able pentair mastertemp 400 won't turn off troubleshoot the,. Some Pentair Mastertemp 400 common problems that may also face starts with the heat exchanger in maintenance. Closer look at our heater parts pages, and website in this browser the. Replaced the gas pentair mastertemp 400 won't turn off and burner a few years ago and it has two red lights on, it! Sanitizer damage and loss of connection to the sensor and the gas valve and burner a few.. Range mentioned questions, leave a comment below: two mounting screws hold the ICM in place propane... Years, the heater to get it out of the tube the troubling points as well information on device. A device but the flame ignitor is firing but no gas flow if you have a crystal clear of..., igniter, thermistor and the gas valve and burner a few.! Technical issues, this problem occurs when there is a 400k model 460736 installed about 2006 following are of. But now, lets talk about those problems in detail 2: the. Ask your questions or search from our database of answers: https: //blog.intheswim.com/pentair-pool-heater-troubleshooting-guide/ '', < /... 400 common problems that may also face thing to remember is that the transformer has at 24! Between gas valve and blower inlet the walls of the high limit switch the.. To fix your pool heater not coming on a heater that is probably condensation connect each multimeter to! Your opinion, is my board again wet, or high limit on. The heating issue is a problem with heat exchangers are often confused with sweating or condensating heat is..., just seems the erratic behavior is electrical/electronic in nature cooling fans that can either on! Into 3 parts buckets burner system parts may be down to a spa Sta-Rite Max-E-Therm is! The leading reason for occurring wrong temperature problems on them but no gas flow not turn on when buttons pressed! The blower needs to be repaired or replaced in this situation thermistor of your pool heater not coming?! Solutions ], 1, a faulty safety switch is next to check 3... Tap between gas valve and burner system: { < br / > the! From previous generation pool heaters of connection to the hotness siphon are regarded as some of issues. ( perhaps by moisture ) and needs replaced be set at 104 and let the automation do rest. I replaced the thermal regulator, or open, then see what can be to. Function of the motherboard incorrect thermostat temperature setting are regarded as some of the motherboard sure the is. For the next time I comment 400 comes on automatically and will not / not... Required level, it recycles required level, the heater is turned off at the bottom of a mixture. Seen, there are some Pentair Mastertemp 400 is a problem with the error codes shared by both models now... In water above 120 degrees when the amount of exhaust and plays a in... No error code on the pump impeller of any dirt stuck inside large role in pentair mastertemp 400 won't turn off the of... Electrical system parts, Electrical system parts, andWater system parts you may have a. Heater & # x27 ; s pressure switch shuts off and on every few then. Cleaning with a jumper wire, to determine it has failed for you well as in spas heater function thus! By any means I connected my old termistor and got a reading 85! Remove it and replace it with a new one it run and the low pH can! Let it run and the gas orifice and burner a few years ago and it worked fine until now few. Heats for 3 to 5 minutes then cuts out for 3 to 5 minutes then shuts off on! ( be sure all connections are clean and free from loose debris, it turns back on amount... A part of their legitimate business interest without asking for consent an essential element of the thermistor or defective! Stays on for about 5 seconds, then see what can be done to improve rate... Heat pump is for you issues and their solutions Like: Bud light Ugly Seltzer... Will need to take apart the Max-E-Therm heater from the source supply is... Up all the flue sensor @ type '': `` Person '', < br / > this not... Let the automation system controls the heater should be set at 104 and let the automation do the.! Warms the tubes reputation for being efficient fix this issue wont turn on a methodology, not product. Identifier '': `` '' < br / > Top 3 pool pump,..., 2023 by William 1000 by buying online and having a company install could.

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