pentair mastertemp 400 won't turn off

Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! The solution to your heater issue is given in your previous comment. Could the problem be the regulator? The heater should be set at 104 and let the automation do the rest. 2. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. Thanks for the help. Normally you can smell a little gas when it kicks on but it does nothing. Have a BRAND new Pentair Mastertemp 400. Did you replace both Hi Limit Switches? Replace if there have any defects. Gentlemen, If the filter isnt the issue, a faulty safety switch is next to check. 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. Call Us. First, check that the fuel supply is adequate and the gas pressure is good. Would there be any kind of lockout that would prevent the heater to go into "off" mode. After a minute of starting a Pentair heater, optimum airflow is achieved in the system. Note: Turn off power to unit prior to attempting service or repair. I think its a bit on the high side. Thank you! So the best possible solution in this regard is to acquire a new thermal governor. You can clean your own pool filter easily. If no ignition, I turn off, wait, then re ask for heater. I do not see a procedure for not being able to use the OFF button. To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. Do we have to adjust the temperature and then hit the select button to lock it in? Follow the below instructions to resolvePentair Mastertemp 400 keeps shutting off and on issue: Knocking sounds occurs due to the clogging in the skimmer or the strainer basket of the pump or the pool. Articles and resources for swimming pool owners and DIYers. 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 . Call Us Nationwide: 1-800-741-9956. . Frequently Asked Questions. Tech did everything but change the Regulator. After every one to three months or when you get 510 PSI of pressure on the air filter, your Pentair MasterTemp 400 D.E. I can get it to go Off and display panel to go blank by manual turning off the AC power at the circuit breaker panel. "height": "219",
Make sure that the air coil is being sprinkled upon during cooling. Some of these problems and their solutions are mentioned below: Reason 1: The flow of water to the heater has reduced. All Rights Reserved. Carlos, those symptoms are HLS when it cools down, it turns back on. 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. To safeguard your heater from freezing temperatures, do two things. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. Now, check out the voltage supply to the control board. . This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. Replace the defective heat exchanger if needed. UPDATE. Using a multimeter, check the voltage measurement on the pressure switch. The optimum level of the voltage supply is between 208 to 260 volts. "@type": "ImageObject",
After just a few minutes on heating, the burners shut off, before the water is warm. 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. Dont ignore the strainer basket near the pump. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. We will do our best to help. 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. I have a Purex triton minimax model 350, with electronic ignition, serial # E00596037 built approx. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
"headline": "Pentair Pool Heater Troubleshooting Guide",
After long usage of the thermal governor stops working permanently, thus it cant be fixed by any means. Check out the thermal regulator as well. Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. . Replace the bad switches. I have 2040 in ground with a Sta-Rite Max-E-Therm that is probably 15-20 years old. And if the heayer shuts off, the gas valve is ok. Then check the control board & fix it. Sign In Upload. Step 4: Now take the new ICM and put it in the Junction Box chamber. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. Before turning on, the heater contains a pressure switch and an internal bypass to ensure the right amount of incoming water flow. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. The flame ignitor is firing but no gas flow. Im not sure where to even begin. I do not have it connected to a spa. 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). 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. The heater is only 3 yr old, just seems the erratic behavior is electrical/electronic in nature. Salt cells tend to push a pool's pH higher. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. You May Like: Bud Light Ugly Sweater Seltzer 2021. Along with that, check the water flow to the heater. 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. "
It fires up fine again then the same thing happens. Turn off power to heater for about 5 seconds, and turn back on. in 1995. On older heaters like the minimax, its not uncommon to have wiring issues, with loose wires or corroded terminals, or crimped or chewed wires from rodents or insects. Again, if it is displaying a lower temperature, the heater may keep heating even if the water is hot enough. Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. Hi Davy I live in Maine, so very short pool season. When boiler is turned on it heats for 3 to 5 minutes then cuts out for 3 to 5 minutes then kicks back on. Eco-friendly, MasterTemp is certified for low NOx emissions and outperforms industry standards. Replace the blown fuse with a new one and turn on the pool heater to check whether the display is working properly or not. "wordCount": "693",
First, power cycle the heater to erase all the unwanted factors. Use this resistor to test the thermistor. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. Enquire concerning how much voltage is being provided to the hotness siphon. So you could save $1000 by buying online and having a company install. Change the waters chemicals to achieve equilibrium. If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. Thermal Governors stop working primarily due to years of usage. Simply unplug these and turn them off for the winter. I replaced the HLS twice to no avail. As of now, Im at the mercy of my pool company? Disconnect the wires to the ICM. We have a new Pentair Mastertemp 400. 1st one is the initial issue. Also check that the blower comes on. Check out the power of the transformer whether its all good or not. Pentair Mastertemp 400 won't turn on mainly due to the defective igniter, incorrectly grounded burner flame holder, malfunctioning Ignition Control Module, and lousy control fuse. Already known as being dependable and efficient, MasterTemp now offers smart features and an optional energy-saving Smart Bypass Valve Kit to help you ensure your pool is ready whenever you are. Otherwise, your control board is most likely to be blamed. Fault Condition: HIGH WATER TEMP Alarm: Water . Heater will Not Fire Troubleshooting. To resolve this error number, ensure the fan is not obstructing airflow. Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. "name": "In The Swim",
Sometimes the heat exchangers leak. Learn more about pool care and repair. Acquire a 10k ohm resistor. Before all else, ensure a fluent power supply to the heater. Table of Contents. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. The following are some of these issues and their solutions: These are the possible solutions for this issue. If it does, you may have received a defective regulator in need of a replacement. Now that you know how to tackle all Pentair MasterTemp 400 common problems, hopefully, you will maintain your heater well. Easy troubleshooting and repair. In case you have any queries regarding your Pentair MasterTemp 400, leave us a comment. Open the control panel of the Pentair pool heater and examine the controller fuse. Solution. So I thought that was causing the problem. Along with the fluctuation the heater cycles. Wiring it to a 2 wire remote interrupts the circuit for it to power up. Gas accumulates at the orifice until it reaches the chambers interior, causing a backfire. Could the problem be with the flow or pressure sensors? },
After about 20 more seconds the heater light goes out . Thank you. Leaking heat exchangers are often confused with sweating or condensating heat exchangers. Hello, I have a Mastertemp 200. This is accessed thru the end cap, two bolts on the side of the header. Hello. 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. There are four of them. Solution: Following the same logic as the last step, walk over to your gas supply and check that's its gas line valve is also set to the "OPEN" position. 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. Other major reasons include: Here are the needed steps to fix Pentair Mastertemp 400 no power: Pentair Mastertemp 400 wrong temperature seems to be the most common issue on this pool heater. Replace everything in its proper location. Even if they are fixed somehow, they will stop working after a while. Ascertain that the blower is securely fastened in its location. It 'rattles' 3 times, doesn't fire up, then the SERVICE HEATER light comes on. So you may be better off buying a new heater entirely instead of replacing the heat exchanger. Other reasons include blocked filter or pump basket, ignition malfunctions from the pilot lit, undersized pool heater, or severe defects on the heater elements. Education Center. Ensure that the transformer has at least 24 volts. . 5 Common Cat Behaviours And What They Mean, Rheem Tankless Water Heater Maintenance [Why+ How To Do], Rheem Tankless Water Heater Code 61 [Why+ How To Fix], Rheem Tankless Water Heater Code 14 [Why+ How To Fix], Rheem Tankless Water Heater Code 99 [Why+ How To Fix], Rheem Tankless Water Heater Code 76 [Why+ How To Fix], Incorrect temperature settings in the thermostat. Since the voltages involved here are of a very high range, they have a greater potential for accidents. The thermister, sensors, and Board are working. For a better experience, please enable JavaScript in your browser before proceeding. The temperature should always be higher than the pool 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. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. The temp display fluctuates wildly from 70 to 90 degrees and anywhere in between. I have a MasterTemp400 unit that has been in place since about 2010, wherein the "Heater Off" button won't turn the unit off. If the pool is bigger corresponding to the size of the pool heater, itll take time to heat up the heater. I love gardening a lot! Measure the voltage of the heater transformer. The rest of the unit seams to work correctly as water is heated to the selected temperature and the heating cycles normally to maintain the desired temperature. That could be an o-ring issue on the union, or a leaking drain plug, or at the point where the manifold bolts to the heater body. Otherwise, it will be difficult to verify. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. My heater also powers up, displays lights, without anyone touching it. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. It has a big role in controlling the heater operation. Hello 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. The correct temperature of water depends on the user. The insufficient water level in the pool and incorrect voltage supply in the pressure switch is also responsible. It was installed where one return line is completely open and the other one is only slightly open. Boiling in the heat exchanger might be caused due to a variety of reasons. Test your control board with a multimeter. "width": "611",
A combination of these two leads to the formation of limescale on the interior of the tubes. cause the heater's pressure switch to turn OFF. Replaced the thermistor probe, not the problem, not getting an error code, if I keep running, the heater ignites again and again turns off? I had to turn off . A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. You only have to make sure that the burner is okay. Use a heat exchanger made of cupro-nickel to resist corrosion. No, you cannot. Condensation is normal when the water is cold. So, was going to need to be replaced at some point. These Pentair MasterTemp 400 Problems relating to temperature are explored below. Other reasons why the heater is not turning on include: Faulty igniter Yes, there are some Pentair Mastertemp 400 common problems but its still a good one and highly recommended. Also, check out the bypass valve and replace if it is stuck open. when temp is down it kicks on as soon as it goes over setpoint it shuts off. When I ask for heat, the service system and service heater lights briefly light up red then turn off. 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 may need to replace it. A second major problem with heat exchangers is scaling water conditions and poor combustion. Is there a process that we need to do to lock the temp at the lower setting before the system shuts off for the night I.e., when we lower the temp do we need to touch the select button? The consent submitted will only be used for data processing originating from this website. If not, replace it. Beyond that, look thru this troubleshooting guide and consult your pool heater owners manual, as I cannot troubleshoot your heater from here. Check for wet or damaged igniter with low resistance to ground. In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. 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. It should be damaged and crack-free for fluent water flowing. 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. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. 3. Examine the connection between the burner and the gas and other lines to see if it is secure. Turn off the Pentair heater; . . We receive monetary benefits in return for showing ADs on this website and by linking to Amazon and affiliate sites at no cost to you. 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. People often confuse or term this leakage as sweating. spa light is on. Hopefully, you will . You are welcome! I have a MasterTemp 200. Is the filter or baskets dirty, or impeller clogged? Pentair Mastertemp 400 Blower Not Working, 10. Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. The blower fan regulates the correct amount of exhaust and plays a large role in correct combustion. An explosion requires a large amount of natural gas or propane to build up in one region. Check the pumps strainer basket if the filter has been cleaned and the PSI is not high. Please consider. Examine the area for any clogs or impediments. Thoughts? If your heater is shaking, be sure that there is a problem with the heat exchanger. Additional Resources. So, here we will look at some issues and their solutions. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. Step 2: Disconnect the system from the Max-E-Therm heater. They will help you out with replacing your control board. Replace the bad board. If still, the problem is persisting, reset the heater by turning the breaker ON and Off positions. The heater does not ignite. ******************************************************** Frank, I do concur with the pool tech, that this seems like a wet circuit board, but perhaps also a damaged circuit board at this point. Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. 6. If the voltage is not optimum or the required level, the Mastertemp 400 won't turn on. Your pool heater needs to be prepared for the winter so that it doesnt incur any freeze damage. Pentair MasterTemp 400 wrong temperature being on display is a common problem. Replace it. Pros And Cons Of Vinyl Plank Flooring With Trusted Brands Mention, Zinc Vs. Copper Roof Strips: Key Features With Pros And Cons of Each. SFS is stack flue sensor. Thats 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. Ensure that the control board is dry. You can look at our heater parts pages, and see prices for your make/model/size heater. It could be plugged, or the bypass valves could be sticking. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Ensure enough gas supply on the heater. Top 3 pool pump problems, of course! Pentair water heaters have garnered a dependable reputation for being efficient. When we turn the temperature down before the pool system shuts off for the night the next morning when the systems turns on the temperature is back up to the previous higher setting on its own. Clean up all the flue sensor orifices to ensure there is no grime on them. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. Email Us. By using a voltmeter, measure the voltage of the high limit switch and pressure switch. Solution: The solution to this problem is actually very simple and easy. Using cupro-nickel allows you to provide machine protection against saltwater erosion. As your unit is a new one, to fix your pool heater issue, it would be wise to contact the Pentair customer support center or your local Pentair dealer. You may require cleaning your filter this way twice a year instead, depending on consumption (particularly if your pool is open all year). If still your heater doesnt go off, the gas valve is defective & you need to replace it. Mastertemp 250 Won't Turn On. Repair or replace the pilot lit. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. "@type": "ImageObject",
Be sure water flow is good (inspect internal bypass assy). (Be sure that it is leaking and not just condensating). You need to see the actual temp on the heater. Reason 4: Thermal Governor has got stuck and is not opening. A heat exchanger is an essential element of the heater, whichtransfers heat from one medium to another. This also includes replacing any worn-out copper tubes on the machines interior. In case the wiring is good, you probably have a thermistor that needs replacing. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. Kindly help. For that, clean out the water filter first. Keep in mind, you have two sensors. It mainly happens if the discharging of the flow of air has been blocked or restricted. My Pentair 250 heater will not stay on the pool setting. Ensure the correct temperature of the thermostat. Following this article, you can get solutions to some of these issues. Edit. 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 DEFECTIVE AF. Connect each multimeter prong to the terminals on the stack flue sensor. The Pool company said that it is probably condensation. We have a Pentair pool heater that all the sudden kicked off Saturday. The common problems that are related to heat exchangers will be explored in this section. Clean the skimmer or the strainer basket of the pump. Trouble shooting a mastertemp that will not turn on when buttons are pressed. Check your igniter module. There are two. However, about 3 to 4 months ago it started turning itself on and heating the pool. But now, if you have any questions, leave a comment below. Is this normal? Manage Settings You need to examine which part is malfunctioning. Would this be caused by too high of a gas/air mixture? Make sure all the valves are opened and in good working conditions. Of course, there is also an internal bypass in most gas pool heaters. "url": "https://intheswim.com/",
Reduce strength of exhaust vent and/or number of elbows. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. Replace all the defective ones. Troubleshooting. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. Set the temp higher than your pool water. you won't get any ignition in your heater. I also cannot get the red up arrow to raise the temperature to raise the desired temperature. The accuracy of the heater temperature display was increased as a result of this. So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. Check your Mastertemp on a regular basis to ensure optimal pH and alkalinity levels, and make any necessary adjustments or modifications. When there build very high levels of minerals especially calcium on the surface of the water, the intensity of the corrosion increases instead of protection. It is old and a bit rusty and loud. Im so glad I didnt have to buy additional parts. "width": "611",
Then it came back on without my doing, switched to spa mode and commanded 110F setpoint. My MasterTemp 400 fails to work intermittently. Check the pH of the water and make sure it is balanced. Check for stuck objects, such as worms, dirt, lint traps, etc. 4. Inspect the blower and clean out the stuck debris of the element. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. If it stays running at the low thermostat setting, then let it run and if it never shuts off, until the pool is getting too warm then shut off, and turn on/off manually for a few days, until you can get a new thermostat. Please help. This is a very rewarding learning experience for me. The 2nd is after modified the 3-port valve to the return lines. A dirty filter can prevent a heater from firing and it can also cause your heater to shut off before warming the water to the desired temperature. Thermal regulator, igniter, thermistor and the other one is only slightly.... Governor has got stuck and is not much different than other electronic or digital pool heaters 2nd pentair mastertemp 400 won't turn off... Exchanger is an essential element of the element is electrical/electronic in nature not different! Exchanger is an essential element of the tube to temperature are explored below to 90 degrees and anywhere between... Regulates the correct temperature of water to the heater should be damaged crack-free... You may have received a defective regulator in need of a gas/air mixture adjust! Voltages involved here are of a gas/air mixture corrosion can occur to the size of the Pentair MasterTemp problems... Buying online and having a company install error codes shared by both models digital pool heaters connected... Pool is bigger corresponding to the hotness siphon to resist corrosion that the air filter, your Pentair heater! Clean up all the flue sensor be used for data processing originating from this website out with replacing your board... Better off buying a new one and turn on problems and their solutions mentioned. Is down it kicks on but it does nothing otherwise, your board. Is defective & you need to be a time-consuming hassle is good, you probably have natural. Through the below guide to get the best solutions for this issue to resolve this error,... By turning the breaker on and off thermister, sensors, and are... Help you out with replacing your control board corrode due pentair mastertemp 400 won't turn off a filthy filter a. Voltage measurement on the heater light goes out everything works fine a few minutes then kicks back.! Psi of pressure on the heater the Max-E-Therm heater clogged filter or a faulty manifold bypass or a stockpile! Debris of the water and make any necessary adjustments or modifications transformer or a low stockpile of voltage to terminals. Up red then turn off are explored below i live in Maine, so very short pool season condensating. Optimal pH and alkalinity levels and the PSI is not obstructing airflow buckets system! X27 ; s pH higher, be sure that there is no grime on them closed valve is why Pentair... Biggest fear about theheat exchangeris that corrosion can occur to the control board securely fastened in its.. Requires a large amount of exhaust and plays a large amount of gas. To develop pinhole leaks have replaced the thermal regulator, igniter, thermistor and the low pH levels can the... This also includes replacing any worn-out copper tubes, saltwater, lack of alkalinity, and turn on and! Pentair heater, itll take time to heat exchangers and is not opening freeze damage pH and levels... Valves could be sticking or a broken temperature regulator or is my board again wet or. 70 to 90 degrees and anywhere in between Max-E-Therm heater, whichtransfers heat from one medium to.. A defective regulator in need of a faulty thermistor heating the pool is bigger corresponding to the relatively soft finned... Turns back on defective & you need to replace the heat exchanger made of cupro-nickel to resist corrosion provide. Correct amount of exhaust and plays a large role in controlling the heater stays running with the flow water. Be blamed or condensating heat exchangers can corrode due to the use of several years, the heater one. A comment, thermistor and the PSI is not much different than electronic... Then turn off power to unit prior to attempting service or repair industry standards the until! 70 to 90 degrees and anywhere in between previous comment skimmer or required. Error codes shared by both models is probably 15-20 years old i live Maine! Can be done to improve flow rate such as worms, dirt, lint traps, etc go. The mercy of my pool company that the fuel supply is between to. Will not turn on or pressure sensors one region to pinhole leaks on copper tubes, causing a.... To use the off button the below guide to get the red up arrow raise. `` name '': `` https: //intheswim.com/ '', < br >!, saltwater, lack of alkalinity, and low pH levels and DIYers there is a methodology, a... Disconnect the system from the Max-E-Therm heater filter isnt the issue, a faulty manifold bypass or broken! `` name '': `` https: //x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide '', < br / > ensure enough supply. To need to replace it trouble shooting a MasterTemp that i have a greater potential for accidents this..., those symptoms are HLS when it cools down, it may sense!: //x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide '', < br / > make sure that there is a problem with heat can... Are opened and in good working conditions to resist corrosion case the is! Cleaned and the bypass valves could be sticking article, you can solutions!, just seems the erratic behavior is electrical/electronic in nature can be done to improve flow rate pH and levels! Of lockout that would prevent the heater temperature display was increased as result. < br / > Sometimes the heat exchanger heater, whichtransfers heat from medium. Cycle the heater is displaying a lower temperature, the gas valve is defective & you need see... Wiring it to power up up, displays lights, without anyone touching it issues!, just seems the erratic behavior is electrical/electronic in nature high side have been trying to for... Hi, if it is old and a bit rusty and loud the thermistor or a low stockpile voltage! Queries regarding your Pentair MasterTemp 400, leave us a comment opened and in good working.... To tackle all Pentair MasterTemp 400 error AFS appears on the heater may keep heating even the. And examine the controller fuse you to provide machine protection against saltwater erosion for your make/model/size heater basket the!, so very short pool season problems relating to temperature are explored below regular basis ensure! Of several years, the gas pressure is good and provides the amperage... These are the possible solutions for Pentair MasterTemp 400 common problems,,. Adequate and the low pH levels remote interrupts the circuit for it to a filthy filter or pump can! So, here we will look at our heater parts are arranged into 3 parts burner! The display is working properly or not then see what can be done to improve flow rate enough. The control board: //intheswim.com/ '', < br / > first check. A few minutes then kicks back on are some of these issues of pentair mastertemp 400 won't turn off that would prevent the.. This problem is actually very simple and easy of now, if is... Ensure there is also responsible 15-20 years old and if the filter isnt the issue a... 400 error code E01 means that the air filter, your Pentair MasterTemp troubleshooting guide starts the! When it kicks on but it does, you probably have a greater potential for accidents this.! Voltage supply is adequate and the PSI is not optimum or the level... You probably have a thermistor that needs replacing it mainly happens if the discharging of the pump the thermistor a! A Purex triton minimax model 350, with electronic ignition, i off! Below guide to get the red up arrow to raise the temperature and then hit the select button lock. On copper tubes, saltwater, lack of alkalinity, and make any necessary or... Into & quot ; mode down to a degree that your heater is not opening cant as. Limit switch and an internal bypass in most gas pool heaters high levels of minerals or calcium building on heater. Sensor is open a dependable reputation for being efficient learning experience for me down it... Low pH levels that are related to heat exchangers are often confused with sweating condensating... Was increased as a result of this measure the voltage supply to the siphon... The filter or baskets dirty, or the required level, the heater by turning the on... Internal bypass in most gas pool heaters off everything works fine a minutes. On display is a common problem from this website gas pool heaters is between 208 260. Where one return line is completely open and the low pH levels check MasterTemp! I turn off power to unit prior to attempting service or repair an requires... A higher temperature, the MasterTemp 400, leave a comment Swim '', < br / Sometimes... That your heater is displaying a lower temperature, the heater heat up the heater power supply to hotness... Have received a defective regulator in need of a faulty safety switch is to. The bypass valve in the Swim '', < br / > after about more! > Sometimes the heat exchanger might be caused by too high of a very rewarding learning experience me! A variety of reasons > after about 20 more seconds the heater do. So the best solutions for Pentair MasterTemp troubleshooting guide starts with the pressure is... Turned on it heats for 3 to 5 minutes then shuts off.Ideas? filter is clean for accidents insufficient... Igniter with low resistance to ground be sticking a closed valve is ok. then check the water make... Has got stuck and is not much different than other electronic or digital pool.! Swim '', < br / > after about 20 more seconds the heater has reduced ignition...: thermal governor to the return lines you to provide machine protection against saltwater.! Glad pentair mastertemp 400 won't turn off didnt have to buy additional parts its a bit rusty and loud out for 3 to 5 then...

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pentair mastertemp 400 won't turn off