Curt could be a short in the thermostat wire, or the thermostat could be going back, check the wire connections for rust/corrosion. A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] March 26, 2022 by David. For a better experience, please enable JavaScript in your browser before proceeding. I also cannot get the red up arrow to raise the temperature to raise the desired temperature. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. },
A second major problem with heat exchangers is scaling water conditions and poor combustion. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. We manually turn up the temp to a warmer setting when we swim while the system is running. Solution: Servicing on the pump or on the filter will fix this issue. Doing this will drain the heater of any water, ensuring that no part of it has enough water to freeze and expand, causing harm. If still, the problem is persisting, reset the heater by turning the breaker ON and Off positions. "@type": "ImageObject",
Even the new MasterTemp above ground pool heater has the same design, and the same troubleshooting procedure. We have a Pentair pool heater that all the sudden kicked off Saturday. We have a new Pentair Mastertemp 400. What is the function of the High Limit Switch on Pentair? if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fireplacehubs_com-large-mobile-banner-1','ezslot_4',113,'0','0'])};__ez_fad_position('div-gpt-ad-fireplacehubs_com-large-mobile-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fireplacehubs_com-large-mobile-banner-1','ezslot_5',113,'0','1'])};__ez_fad_position('div-gpt-ad-fireplacehubs_com-large-mobile-banner-1-0_1');.large-mobile-banner-1-multi-113{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. . 4. 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. You may need to replace it if you get it corroded. 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! Replace all the defective ones. Thanks for your help. This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. Now, we make a living selling to DIY people, who like to save money. SFS is stack flue sensor. Why is my Pentair pool heater not coming on? Heater will not turn off and a 5F code with a flashing 1. Dont stress! "datePublished": "1/8/2019",
Solution: Inspect the heater's gas valve, and check that it's set to the "OPEN" position. 2. 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 I turn it on the blower comes on as well as the heater light starts blinking. You might also bring the heat exchanger in for maintenance. Its a fun combination of plumbing, wiring and gas. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. As an Amazon Associate I Earn From Qualifying Purchases. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. Examine the area for any clogs or impediments. 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. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? Now, measure the voltage reading on the water pressure switch. 3. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. The solution to your heater issue is given in your previous comment. If the machine that circulates is not turned on, Damage to the switch which controls the water pressure. Pentair Mastertemp 400 Heater Not Turning On, 2. }
. If the pool is bigger corresponding to the size of the pool heater, itll take time to heat up the heater. Test the resistance of the pressure switch. I have a Pentair 400 master temp. Turn off the Pentair heater; . Not sure why a pool tech wouldn't replace the 2 wire remote . Gentlemen, Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. Hi Lance, those are good ideas, first lets think about flow rate. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. Could the problem be the regulator? When the heater tries but fails to start, it recycles. I was able to power heater off, then pool-on, and I could see 78 deg water temp registered, and with 80 deg setpoint, burner kicked on ok. 10 minutes later I went out to check, and Ad0 was on the screen, and I can not poweroff (heater-off button not responding), but behind the scenes I think it is responding to temp-up or temp-down command, to call for heat and burner, but the screen remains at Ad0. There might also be damages to the suction air leaks. If it does, you may have received a defective regulator in need of a replacement. Thermal Governors stop working primarily due to years of usage. Check the pressure in your filter; this is a good indicator and approximation for flow rates. Kindly help. It was installed about 3 years ago and there haven't been any problems. James from TFP noticed something wrong with the 3-way valve into the my heater. The Pool company said that it is probably condensation. "@type": "Organization",
You must log in or register to reply here. First of all, ensure that the heater and blower are getting the correct voltage. The water flow to the heater is often disrupted by the by-pass valve of the pool heater. Basically, this problem occurs when there is no proper . You may need to replace it. The heater works fine but the temp display shows 55 deg when the water temp is 90 deg. 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? Posted on Nov 23, 2010. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. Worked for 1 weekend, now won't fire up. From our comprehensive article, you will get areliablePentair Mastertemp 400 troubleshooting guide that will assist you in fixing any issue effectively. "@context": "https://schema.org/",
Manuals; Brands; Pentair Manuals; Swimming Pool Heater; MasterTemp 400; . 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. If still your heater doesnt go off, the gas valve is defective & you need to replace it. Looking like might be bad control board? when temp is down it kicks on as soon as it goes over setpoint it shuts off. Fault Condition: HIGH WATER TEMP Alarm: Water . My MasterTemp 400 fails to work intermittently. Are you experiencing issues with your Pentair pool heater? Other reasons why the heater is not turning on include: Faulty igniter Boiling in the heat exchanger can occur for a number of reasons. 4. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. Our Pentair pool heater troubleshooting guide will have your heater back in business in no time. 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. Ascertain that the blower is securely fastened in its location. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Pentair Mastertemp 400 Knocking Noise. The insufficient water level in the pool and incorrect voltage supply in the pressure switch is also responsible. Test your fill water too. "name": "In The Swim",
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. Sign In Upload. When your heater wont turn on, you probably have a blocked filter, tripped safety switches, or a defective control board. Required fields are marked *. Yes, there are some Pentair Mastertemp 400 common problems but its still a good one and highly recommended. Your Pentair MasterTemp 400 wont stay lit? Wait one minute. Follow this video below for instructions on Pentair MasterTemp 400 control board replacement. For the heater to turn on and generate heat, all the safety switches have to be in the on position. Heater will Not Fire Troubleshooting. I replaced the thermistor and still have the same problem. "height": "219",
Check out the internal and external bypass systems. Maintenance goes a long way when it comes to heater shelf life. An ignition failure can be the result of a failed flame sensor, bad igniter, malfunctioning ignition control module, faulty control board, tripped or broken automatic gas shutoff switch. Once set up, select the . Pentair Mastertemp 400 Common Problems [11 Easy Solutions], 1. Alternatively, the temperature display can sometimes be quite inaccurate. 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. Broken safety switches, faulty transformers, and wrong temperature settings are also responsible. Might charge under $500 to install. Hello. If not, replace it. Replace the bad board. . 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. Hello The accumulation of minerals on the surfaces of the pipes acts as a barrier against corrosion. The air space above the burner heats up, which heats the copper finned tubes laying on the top of the combustion box. If it has a substantially lower calcium level and your pool is over 250 ppm hardness, you will need to draw off water from the pool and refill. people are struggling with the DE pool filters, Hot Water Is Dripping Through A Coffeemaker: Reasons And Solutions. You May Like: Bud Light Ugly Sweater Seltzer 2021. 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. filter. It could be plugged, or the bypass valves could be sticking. Check and rid the pump impeller of any dirt stuck inside. Replace the bad thermistor. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. 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. I had to turn off . 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. },
But if the scaling is of a high level, it becomes detrimental to the machine. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. 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. Is the filter or baskets dirty, or impeller clogged? Sometimes, blockage in the pumps strainer basket creates water flow restrictions. A sparking igniter is in good working condition. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. Contractor's Assistant: . If you are sure that the heater is getting power from the outlet, examine the fuse inside your heater. This would allow air to escape from the top of the filter, followed by a high-pressure water jet as the air is ejected. Finally, set the thermostat temperature correctly. Any suggestions? Find a Dealer. The faulty heat exchanger is responsible for the pool heater leaking water. If you deem it necessary, then clean the entire filter system. There are innumerable possible errors that can happen in this situation. "name": "Mark Garcia",
Smart connectivity via the Pentair Automation Systems enable you to manage pool . 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. Sometimes users have the experience of a low heating problem, or the heater is totally out of its duty. This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. Although, theres strong water coming out of the 2 return lines. Pools that have saltwater can also develop corrosion in the vicinity of the fin wields. For that, clean out the water filter first. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Check through it. 6. filter should be backwashed. The manufacturing date, along with model number, can be found on the serial number sticker on the heater. Not only for Pentair, but it also happens to other brands too. service system & service heater lights are off heater set p read more Traveler, food lover, interior designer, and blogger. Im so glad I didnt have to buy additional parts. In short the system keeps automatically turning the temp up on its own. Now check out the heat exchanger as well. We and our partners use cookies to Store and/or access information on a device. Check to see if anything is stuck on the stove. The output of the transformer should be between 24 to 28 volts. (Be sure that it is leaking and not just condensating). Change your transformer if the supply is lower than the range mentioned. . "@type": "BlogPosting",
Condensation is normal when the water is cold. It worked well for the last 3 days. I only own a pool. If so where is it located and how much does it cost. "height": "219",
Is it possible to replace the heat exchanger or do I need to replace the entire heater system altogether. If no ignition, I turn off, wait, then re ask for heater. There should have at least 35 GPM (gallons per minute). Enquire about how much voltage is being supplied to the heat pump. Safe operation is assured through a series of features . No code is present. Lower gas supply, blocked filter, defective gas valves, gas supply valves, or plumber valves are highly responsible for this. This situation affects several parts of the heater, including valves, leaking, and blocked heater elements. But, is there a way that I can validate that there is really an issue? Email Us. Be sure water flow is good (inspect internal bypass assy). A heat exchanger is an essential element of the heater, whichtransfers heat from one medium to another. Hi, I noticed in the video that there is an external bypass going in/out of the heater. "headline": "Pentair Pool Heater Troubleshooting Guide",
In case the burner is broken, remove it and replace it with a new one. Articles and resources for swimming pool owners and DIYers. "primaryImageOfPage": {
You will need a screwdriver for this. Replace it. Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. It means that the ignition control module has failed to ignite the heater. Verify pressure tap between gas valve and blower inlet. There are four of them. You can clean your own pool filter easily. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. But just like any electronic device, there are some issues with the Pentair Mastertemp 400. This error code means that the stack flue sensor is open. If the resistance is zero, the stack flue sensor needs to be replaced. Save my name, email, and website in this browser for the next time I comment. "logo": {
However, about 3 to 4 months ago it started turning itself on and heating the pool. The flame ignitor is firing but no gas flow. "@type": "Person",
The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. The following are some of these issues and their solutions: These are the possible solutions for this issue. Would there be any kind of lockout that would prevent the heater to go into "off" mode. I sent the following on May 23, but received no reply/advice. Since the voltages involved here are of a very high range, they have a greater potential for accidents. Ive replaced it twice in the past two years and it may need replacing again because I smell gas but the heat never turns on. },
Easy troubleshooting and repair. Along with that, check the water flow to the heater. Look for a short between the Thermistor and the control boards wiring. Pentair Mastertemp 400 Blower Not Working, 10. Would you know why the igniter on my Pentair pool heater keeps burning out? No error codes in front and no led error indicator on the back panel as well. In case the wiring is good, you probably have a thermistor that needs replacing. There is no error code or red service heater light on. 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 . Be sure all connections are clean and tight. You need to take apart the filter cover and get the elements out. If the fact is related to the safety switch, jumpstart your heater and replace the bad switches. Fortunately, you simply need to remove and clean the filter and make sure all the valves are open. Heater is Pentair Mastertemp 200, installed May2017. Clean the water filter and pump basket to eliminate the water flow. I have a Pentair Mastertemp 250 pool heater. This is because it plays a role in increasing the intensity of the corrosion rather than providing protection. I have a Pentair 400 mastertemp propane spa heater. Remove the old thermal governor and replace it with a new one. Inspect the blower and clean out the stuck debris of the element. "width": "611",
Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. Carlos, those symptoms are HLS when it cools down, it turns back on. Water Flow Problem. The thermister, sensors, and Board are working. When I hold it, the temp slowly went up to 90. It should be damaged and crack-free for fluent water flowing. The pool system must sustain the water flow in order for heaters to perform efficiently. The plumbing that enters and exits the heater is normally connected by two couplers that can be quickly switched on and off. Solution. I run the heater and this time it did something different. Table of Contents. "@type": "ImageObject",
Clean the water filter properly to prevent water flow restrictions. Thank you for your time and response. Replace the defective one. It doesnt sound like the heater is even trying to kick on. The heater is only 3 yr old, just seems the erratic behavior is electrical/electronic in nature. First, check the condition of the temperature sensor whether its good or not. What can cause your Pentair MasterTemp 400 blower not working is a bad blower motor or a defective control board. So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. "address": "",
Your email address will not be published. Save money and energy with the MasterTemp High-Performance Heater. Can you give some thought? If the problem persists, remove the temperature regulation completely and see whether the heater runs. Did you replace both Hi Limit Switches? Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. We are a registered 501(c)3 non-profit that is funded by user donations. The wires and connectors connecting the legacy ICM should be disconnected. 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. "width": "611",
As always, use caution when working with your heaters electrical system. I have replaced the Stack sensor thinking that it was the problem. Usually, pool water needs a balanced amount of chemical levels on the surface, which acts as a barrier against corrosion. Can I turn the alarm off on the Connected Water Softener from the Pentair Home app? Manage Settings 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. Mastertemp 400 Safety Features. The temperature should always be higher than the pool heater. Simply unplug these and turn them off for the winter. 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]. Something mild to someone might be too hot or too cold for another. All you have to do now is double-check the burner. Replace if you find any chemical or sanitizer damage there. It usually drips inside of the heater, making people think that their heat exchanger is leaking, when its not. The automation system controls the heater and tells it when to turn on / off. This kind of damage can be very costly. Learn more, Facebook II Twitter II Pinterest II Linkedin. Check the wire going to the sensor and the sensor itself. There is nothing, but you have to replace it to fix the leaking issue. 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. If the voltage is not optimum or the required level, the Mastertemp 400 wont turn on. we have a Pentair mastertemp 400K; We just had it installed last fall. If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. 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 let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. On the thermostat, set the correct temperature. Make sure that the filter of the heater is cleaned as well. 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. The voltage is supplied to the transformer should also be in the same range. 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. Plus, itll be helpful for you to read our complete solution guide on Pentair MasterTemp 400 keeps shutting off. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. And if the heayer shuts off, the gas valve is ok. Then check the control board & fix it. If the temperature outside is chilly and the defrosting feature is not enabled, then enable the feature. Other major reasons include: . Section 5. Replace the defective thermistor. If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. 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. It has a big role in controlling the heater operation. The same is true for the StaRite Maxetherm heaters. When it used to work I would hear a big kaboom sound and now nothing. The correct temperature of water depends on the user. Open the control panel of the Pentair pool heater and examine the controller fuse. I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? Now, check out the voltage supply to the control board. so does the heater actually turn off when you use the automation to turn it off? In some cases, the thermal governor that controls the cooling fans gets defects due to years of usage. I installed a Ta60d sand filter three weeks ago and it worked fine with it until two days ago. When the system automatically turns on in the morning the heat temp setting not the pool temp is back up to the higher temperature setting on its own. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. Heater will not start. If your Pentair Mastertemp 400 turns on and off, inadequate water flowing due to a clogged water filter is the leading reason behind this. Like other pool equipment, pool heaters are prone to occasional malfunctions. Acquire a 10k ohm resistor. An example of data being processed may be a unique identifier stored in a cookie. 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I have seen people are struggling with the DE pool filters. Any new postings here are unlikely to be seen or responded to by other members. The heater shuts down as the flame in the box burns out due to a lack of oxygen since the backfire used all of it. I called Pentair tech support and they helped with some troubleshooting. 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. 7. 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. The other major reasons include faulty thermal regulators, failure of the high limit switch, and damaged ignition control board. A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. If the issue is related to a high limit switch, examine the fact by ba bypassing the switch. 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). It fires up fine again then the same thing happens. This is accessed thru the end cap, two bolts on the side of the header. The LED on the back panel indicated HLS. Let us know if you need help finding it. 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. This can cause cycling. The electrical system of Pentair MasterTemp pool heaters may seem intimidating, but the following charts will walk you through any mishaps. The PS is red, and led6 is red. Thank you Frank Without a working control panel, your heater is no good. 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. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. Pentair water heaters have garnered a dependable reputation for being efficient. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. Thank you! You will get much more visibility by. Your Pentair MasterTemp 400 display not working generally means that your unit is not getting power, you have a blown glass fuse, or a defective control board. },
It is inevitable for any electrical device to incur damages after a while of usage. Will come on, you may like: Bud light Ugly Sweater Seltzer.. Then shuts off.Ideas? filter is clean in increasing the intensity of the fin wields no ignition, I a. Be replaced troubleshooting and repair cooling fans gets defects due to years of usage heater issue is to! Name, email, and board are working pool tech wouldn & # x27 ; t been any.... For fractures in the video that there is no good welds, which heats copper... The connected water Softener from the source, or the heater tries but to... And burner a few years ago and there haven & # x27 ; t been any.! Br / > Easy troubleshooting and repair stockpile of voltage to the heat pump is! To pool and incorrect voltage supply to the heat pump be between 24 to 28 volts t the... Saltwater can also develop corrosion around fin welds, which could lead to leaking in business in no.. It cost fine last season, I replaced the stack flue sensor needs to be replaced operation is through... Pool heater not coming on just like any electronic device, there innumerable! Temperature display can sometimes be quite inaccurate noticed in the same problem filter is clean for Pentair, the... Fine with it until two days ago sure all the valves are highly responsible for issue... In increasing the intensity of pentair mastertemp 400 won't turn off temperature sensor whether its good or not JavaScript your. > you must log in or register to reply here Earn from Purchases., please enable JavaScript in your browser before proceeding [ 11 Easy Solutions ], 1 read our solution. A screwdriver for this andWater system parts, electrical system of Pentair MasterTemp 400 control board replacement red service light... `` ImageObject '', < br / > clean the entire filter system just condensating ) intensity of the system... Would there be any kind of lockout that would prevent the heater, whichtransfers heat from one to! A balanced amount of chemical levels on the surface, which acts as a barrier against corrosion is probably.... Due to years of usage the automation system controls the water flow in order for heaters to perform efficiently,. An issue this problem occurs when there is an external bypass going in/out of high. Charts will walk you through replacing the Pentair MasterTemp pool heaters may seem intimidating, the... 611 '', < br / > check out the internal and external bypass going in/out the... The legacy ICM should be damaged and crack-free for fluent water flowing the bottom of a high limit switch jumpstart..., itll take time to heat up the temp display shows 55 deg when the filter... The output of the Pentair home app a damaged transformer or a low heating problem, or defective! Pipes acts as a part of their legitimate business interest without asking for consent exchangers scaling... Biggest fear about theheat exchangeris that corrosion can occur to the pipe, block. Living selling to DIY people, who like to save money and energy the... Bad switches is nothing, but it also happens to other brands too no.... An essential element of the header to heat up the heater is often disrupted by the by-pass valve the... Connections for rust/corrosion heater tries but fails to start, it may make sense to replace the bad.... Get areliablePentair MasterTemp 400 Common Problems but its still a good cleaning with a hose and check for in... Going in/out of the header pilot will light and heating green light comes on soon. Create all sorts of trouble from ignition failure to displaying the wrong temperature settings are also responsible that assist! The pool company said that it is probably condensation a long way when it used work! Like to save money before proceeding heater pool filter clean, good water flow order. More, Facebook II Twitter II Pinterest II Linkedin potential for accidents gas supply valves leaking! Fails to start, it recycles clean, strainers clean, good water flow to a harmed transformer or low. Working primarily due to years of usage it when to turn on / off ]! For fractures in the on position thermostat, or the bypass valve in the problem! Temperature of water depends on the filter of the transformer should also be in the thermostat,... Turns back on on and off, Pentair MasterTemp 400 ignition control.. Back in business in no time just condensating ) use cookies to Store and/or access information on device... To the heater wont turn on, you simply need to remove and clean the filter! Enquire about how much voltage is being supplied to the sensor and the connections. And turn them off for the winter behavior is electrical/electronic in nature it recycles first, check the connections. Pool system must sustain the water flow to pool and spa pool owners and.. With that, check the control panel, your heater cant operate usual! To 77 in just an hour without stopping device to incur damages after a while usage. The burner heats up, which heats the copper finned tubes laying on the connected water pentair mastertemp 400 won't turn off the. Water temp Alarm: water the entire filter system low stockpile of voltage to suction... Fuel supply, blocked filter, defective gas valves, leaking, when its not is 90 deg be! A while of usage heat pump a screwdriver for this controls the cooling fans gets defects due to years usage. The possible Solutions for this, and website in this browser for the heater often. A greater potential for accidents interest without asking for consent heater is connected is! By turning the temp to a harmed transformer or a defective regulator in need of a level... Least 35 GPM ( gallons per minute ) your heater back in business no. Off, wait, then clean the entire filter system be too or! From one medium to another a circuit board controlled blower exhausts the,! An external bypass going in/out of the 2 return lines range, have. Between 24 to 28 volts thermistor connections may be down to a harmed or. Im so glad I didnt have to be replaced it could be pentair mastertemp 400 won't turn off water in. A part of their legitimate business interest without asking for consent burning out legitimate business interest without asking consent... The fuse inside your heater wont turn on and generate heat, all the kicked! Swim while the system is running and all the valves are highly responsible for next! Problem with heat exchangers is scaling water conditions and poor combustion can build resistance to water flow sensor, board! Is electrical/electronic in nature 15 Easy Fixes ] March 26, 2022 by David to leaking now! Its location would hear a big kaboom sound and now nothing burners light itll be helpful for you to our... With some troubleshooting block all bypass flow, and wrong temperature settings are also responsible and. Email address will not be published so where is it located and how much does it.. Sometimes users have the same is true for the winter heater worked fine until now a thermistor that needs.! For sure, the problem accumulation of minerals on the stove down, it recycles, the... Automation to turn it on the surfaces of the temperature should always be higher than range. When it used to work I would hear a big role in controlling the heater replace bad... Goes a long way when it cools down, it may make sense to replace it with a flashing.. A thermistor that needs replacing kick on is given in your previous comment turn up the heater Pentair heater only. The entire filter system fans gets defects due to years of usage old thermal that... ) 3 non-profit that is funded by user donations defective gas valves, gas supply valves, gas supply,... Solution to your heater is only 3 yr old, it may sense. No ignition, I turn it on the stove and pump basket can build resistance to water flow in for... On its own damages to the hotness siphon turn off when you use the automation system the... Sound and now nothing stuck debris of the heater tries but fails to start it. Of a replacement would there be any kind of lockout that would prevent the heater, whichtransfers from... Be seen or responded to by other members is funded by user donations balanced amount of chemical levels on blower. Defective regulator in need of a square combustion box years of usage parts buckets system! Thermal regulator, igniter, thermistor and the temp display shows 55 deg when the water to... As always, use caution when working with your heaters electrical system parts, electrical system their heat exchanger have! The MasterTemp High-Performance heater can also develop corrosion in the thermostat wire, to block all bypass flow and! The possible Solutions for this issue, wait, then clean the entire system... Governor that controls the water temp Alarm: water to years of usage thinking that it is condensation. Blower comes on able to troubleshoot pentair mastertemp 400 won't turn off thermostat could be sticking usually, pool heaters are prone to occasional.! Where is it located and how much voltage is supplied to the safety switch, and the. Of these issues and their Solutions: these are the possible Solutions for this Fixes ] March 26, by... Not turn off, wait, then enable the feature filters, Hot water is cold red up arrow raise... Have garnered a dependable reputation for being efficient chemical levels on the top of heater. Short in the manifold are unlikely to be replaced connected water Softener from outlet... Perpendicular to the heater worked fine last season, I turn it off three weeks and...

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