http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. Rust or red spiders can clog these up. 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. The air space above the burner heats up, which heats the copper finned tubes laying on the top of the combustion box. Now, measure the voltage reading on the water pressure switch. Even the new MasterTemp above ground pool heater has the same design, and the same troubleshooting procedure. My MasterTemp 400 fails to work intermittently. Replace it if you find no voltage there. . 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. HI! Adding MA is a normal and expected process to help keep it in check. I think its a bit on the high side. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you now. Step 2: You then need to take apart the Max-E-Therm heater from the system. A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. Replaced the thermistor probe, not the problem, not getting an error code, if I keep running, the heater ignites again and again turns off? The Mastertemp 400 requires a voltage of 24 VAC. After every one to three months or when you get 510 PSI of pressure on the air filter, your Pentair MasterTemp 400 D.E. 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. Could the problem be the regulator? It fires up fine again then the same thing happens. 1st one is the initial issue. By using a voltmeter, measure the voltage of the high limit switch and pressure switch. When the heater temperature exceeds the safety level, it activates and shut down the heater. This means that the cleaner also won't impact the efficiency or operation of your filtration system. we have a Pentair mastertemp 400K; We just had it installed last fall. It 'rattles' 3 times, doesn't fire up, then the SERVICE HEATER light comes on. Now, we make a living selling to DIY people, who like to save money. I have a pentagram minimal plus heater and when I turn it on it stays on at low thermostat setting but when I try and increase it the heater kicks off and then wont come back on. (Be sure that it is leaking and not just condensating). The output of the transformer should be between 24 to 28 volts. Take a closer look at where the water originates. Continue with Recommended Cookies. "thumbnailUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Pool heater failing to ignite gas. To hear if the small relay on the board clicks while giving voltage to the blower, put your ear right next to the top of the heater. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. Clean the skimmer or the strainer basket of the pump. Remove the hard obstacle near the sensor. If the filter isnt the issue, a faulty safety switch is next to check. Pinhole leaks develop on the copper tubes that are on the interior of the machine. If the supply valve is OFF, turn it ON. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. View online or download Pentair MasterTemp 400 Brochure. Advice? Solution. We have a Pentair 300 for both spa and pool heating. https://w. The common problems that are related to heat exchangers will be explored in this section. A clogged pool filter or pump basket will prevent water from flowing freely, so make sure its all clean and all valves are open. If you are sure that the heater is getting power from the outlet, examine the fuse inside your heater. cause the heater's pressure switch to turn OFF. },
The Pool company said that it is probably condensation. Finally, set the thermostat temperature correctly. Dont ignore the strainer basket near the pump. Ensure that the burner flame holder is grounded properly. $4100 is not cheap. For the heater to turn on and generate heat, all the safety switches have to be in the on position. Operating Control Panel. If the machine that circulates is not turned on, Damage to the switch which controls the water pressure. Pentair Mastertemp 250 turns on automatically. The thermal regulator should be in fine working condition. It also could be a bad pressure switch, or switch out of adjustment, some have a small screw that can be turned to reduce/increase psi. Enquire about how much voltage is being supplied to the heat pump. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
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. SOURCE: Pentair MasterTemp 400 Heater Will run fine for. When the amount of scaling is very low, it might often be beneficial. Plus, itll be helpful for you to read our complete solution guide on Pentair MasterTemp 400 keeps shutting off. Check your igniter module. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. "headline": "Pentair Pool Heater Troubleshooting Guide",
When your Pentair Mastertemp 400 keeps shutting off, it could be caused by a faulty temperature sensor, a low water flow rate causing the heater to overheat, or a bad control board. Replace the bad board. All you have to do now is double-check the burner. In case you have any queries regarding your Pentair MasterTemp 400, leave us a comment. Ignition failure is one of the common problems that the users of Pentair Mastertemp face. Examine the connection between the burner and the gas and other lines to see if it is secure. I have a Pentair Master Temp 300 Pool Heater that is 6 years old. Greetings Mr. Merino I opened pool 2 weeks ago, but only started heater last weekend. 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. Still have the power light lit but no other lights are lit. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
All of this must be considered when deciding whether to fix the heater by changing the exchanger or replacing the entire heater. I connected my old termistor and got a reading of 85 degrees. James from TFP noticed something wrong with the 3-way valve into the my heater. Solution: Servicing on the pump or on the filter will fix this issue. Heater will Not Fire Troubleshooting. Do any diagnostic LED’s on back of board (AGS, AFS, SFS, HLS, PS . We will do our best to help. Would there be any kind of lockout that would prevent the heater to go into "off" mode. An explosion requires a large amount of natural gas or propane to build up in one region. 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. All Rights Reserved. A local pool service expert suspected the electronic control board may have gotten wet (we have had a good deal of rain here in northeast ohio recently) thus the odd error messages that I can not find in the owners manual. I have a Pentair 400 master temp. Pentair Mastertemp 400 Blower Not Working, 10. If the voltage is not optimum or the required level, the Mastertemp 400 wont turn on. Sign In Upload. Note: when the opened the manifold last winter to replace the bypass, the manifold and the heat coils have no signs of scales. Pentair Mastertemp 400 Low Water Circulation, 6. 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. If it does, you may have received a defective regulator in need of a replacement. Salt cells tend to push a pool's pH higher. When it used to work I would hear a big kaboom sound and now nothing. If the resistance is zero, the stack flue sensor needs to be replaced. If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. A leaking heat exchanger is a serious situation. You can also check it by seeing if it opens up when you put it in water above 120 degrees. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. Without a working control panel, your heater is no good. 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. Kindly help. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. It continuously bounces between pool and spa. The valve has to allow enough water into the heater, not too little, not too much. Connect each multimeter prong to the terminals on the stack flue sensor. Hopefully, now you have a crystal clear idea of each of the Pentair Mastertemp 400 problems. In some cases, the water can become too hot or too cold. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. When this fuse blows, the symptom is a heater that won't power up on the touch pad. 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 . A thermistor is mainly regarded as a temperature sensor. I also noticed that I couldnt completely open the valve on the return lines. Bought the house 2.5 years ago. See page 16 and verify the gas regulator is -0.2 wc. I have 2040 in ground with a Sta-Rite Max-E-Therm that is probably 15-20 years old. Education Center. Boiling in the heat exchanger can occur for a number of reasons. 4. All Right Reserved by HeaterFixLab. To troubleshoot each of the above issues, the user needs a quick working solution guide. Thanks for the help. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. "@type": "ImageObject",
Product Registration. If not, replace it. Besides, the heater turning on automatically, the flame won't stay lit, the blower not working . No code is present. We are a registered 501(c)3 non-profit that is funded by user donations. Enquire concerning how much voltage is being provided to the hotness siphon. It can even be dangerous. This issue should be checked ASAP. Using a multimeter, check the voltage measurement on the pressure switch. You must log in or register to reply here. To confirm that is the problem simply screw the cap back on and leave out the spring/thermostat and turn on the heater to see if that solves the problem. Check your Mastertemp on a regular basis to ensure optimal pH and alkalinity levels, and make any necessary adjustments or modifications. Following this article, you can get solutions to some of these issues. For that, clean out the water filter first. 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 can try replacing the control board yourself in case you have some electrical knowledge. Problems and Corrective Action. Pentair Pool Support 1-800-831-7133. Pentair MasterTemp 400 has this problem that after about 10 minutes of ignition it suddenly stops automatically and there is a sound like some stones are gargling in the pipes of Pentair MasterTemp 400. Cant figure out why it keeps reverting back to a higher temp on its own when weve turned it down. If your Pentair Mastertemp 400 won't turn on, for sure, the heater is facing a power supply degradation problem from the source. Turn off the Pentair heater; . If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. "@type": "ImageObject",
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. Posted on Nov 23, 2010. Ensure that the transformer has at least 24 volts. 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. If not, replace it. So I heed the advise although the flapper in the check valve still doesnt open completely, the heater started working again. 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. "width": "611",
Read More. The other major reasons include faulty thermal regulators, failure of the high limit switch, and damaged ignition control board. Open the control panel of the Pentair pool heater and examine the controller fuse. Hi,e repl Same issue continues. Boiling in the heat exchanger might be caused due to a variety of reasons. In case the issue persists, replace the control board. Heater is Pentair Mastertemp 200, installed May2017. It mainly happens if the discharging of the flow of air has been blocked or restricted. 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. Theburner system of the MasterTemp/Max-e-Therm heaters is called the flame holder. 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. Lets start. February 9, 2023 by William. Pros And Cons Of Vinyl Plank Flooring With Trusted Brands Mention, Zinc Vs. Copper Roof Strips: Key Features With Pros And Cons of Each. Hello Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. You may need to replace it. The temperature should always be higher than the pool heater. SFS is stack flue sensor. As soon as I read his reply about the 3-port valve going into the heater, I thought right away it all make sense. What is the function of the High Limit Switch on Pentair? Sometimes the heat exchangers leak. We and our partners use cookies to Store and/or access information on a device. A defective temperature sensor or thermistor is the leading reason for occurring wrong temperature problems. The heater is a 400k model 460736 installed about 2006. If needed, hire or call a dealer to check it for you or take advice on necessary precautions or methods. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. Paul, that sounds like an external heater bypass arrangement, used when very large pool pumps are used, to allow some of the water to bypass the heater. Not sure why a pool tech wouldn't replace the 2 wire remote . Can you give some thought? The LED on the back panel indicated HLS. This would allow air to escape from the top of the filter, followed by a high-pressure water jet as the air is ejected. . And if the heayer shuts off, the gas valve is ok. Then check the control board & fix it. See if the igniter fires when you turn on the heater. 39. Pentair Mastertemp 400 Heater Not Turning On, 2. Mastertemp 250 Won't Turn On. How does the thermistor work on the pool heater? We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Also check that the blower comes on. It worked well for the last 3 days. I have seen people are struggling with the DE pool filters. Check out the power supply to the pressure switch, fusible link, and high limit switches as well. It does this over and over . 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. This problem occurs due to some water chemistry and its residues gunk up in the pipes. If no ignition, I turn off, wait, then re ask for heater. Replace it if you want, or just continue to use the spa thermostat, for pool heating. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. Step 2: Disconnect the system from the Max-E-Therm heater. Adjust the chemical level of the pool water. I have a MasterTemp400 unit that has been in place since about 2010, wherein the "Heater Off" button won't turn the unit off. From our comprehensive article, you will get areliablePentair Mastertemp 400 troubleshooting guide that will assist you in fixing any issue effectively. The thermistor measures the water temperature and ensures a maximum level to prevent heater damage. No error codes in front and no led error indicator on the back panel as well. If the issue is related to a high limit switch, examine the fact by ba bypassing the switch. You may need to replace it if you get it corroded. . Also, do you think $4,100, all in (including tax, install/labor, new heater, extra parts) is reasonable or thats really high? Glitches in the power supply are the root reason behind this. Hi Lance, those are good ideas, first lets think about flow rate. },
Solution: The solution to this problem is actually very simple and easy. There are two. He said the heat exchanger is gone and it would be $2K to replace it all in or $4,100 all in for a new Max-E-Therm, 400 BTU LP, which they recommend. If you agree, which device is the most likely to fail and how does one test it. Using cupro-nickel allows you to provide machine protection against saltwater erosion. "author": {
Close the external bypass if open. Ensure the correct temperature of the thermostat. Alternatively, the temperature display can sometimes be quite inaccurate. How do you test a Pentair stack flue sensor? But if the scaling is of a high level, it becomes detrimental to the machine. Combustion appears normal, but the flame does not stay lit. Solution: Replace the thermal governor with a new one. I called Pentair tech support and they helped with some troubleshooting. Take the heaters side panel off and dry the connections with a blow dryer. "description": "Pentair Pool Heater Troubleshooting Guide, step by step method to find and fix your Pentair gas pool heater, the Minimax or Mastertemp. Possible Cause: Gas supply valve. This error code means that the stack flue sensor is open. The accuracy of the heater temperature display was increased as a result of this. There is nothing, but you have to replace it to fix the leaking issue. To get a solution, first, check the thermal regulator which you get between the inlet or outlet of the heater. Inaccurate Temperature Control or Display. To resolve this error number, ensure the fan is not obstructing airflow. Make sure all the valves are opened and in good working conditions. Change the waters chemicals to achieve equilibrium. If your Pentair Mastertemp 400 turns on and off, inadequate water flowing due to a clogged water filter is the leading reason behind this. Leaking heat exchangers are often confused with sweating or condensating heat exchangers. Call Us Nationwide: 1-800-741-9956. . It may not display this or other websites correctly. Top 3 pool pump problems, of course! The wires and connectors connecting the legacy ICM should be disconnected. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. First of all, ensure that the heater and blower are getting the correct voltage. But now, if you have any questions, leave a comment below. Additional Resources. I only own a pool. An example of data being processed may be a unique identifier stored in a cookie. These problems could lead to build-up oflime scaleinside the copper tubes, which renders the heat exchanger useless and requires a replacement. 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. You are using an out of date browser. This is a common problem that might come about due to the failure of the part known as the thermal governor. Chemical or sanitizer damage and loss of connection to the pressure switch also lead to this issue. Water Flow Problem. Im not sure where to even begin. Pentair MasterTemp 400 wrong temperature being on display is a common problem. 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. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. The heater read more Check the pumps strainer basket if the filter has been cleaned and the PSI is not high. The wiring diagram is given below for your reference. Verify the control board is in well-working condition. "keywords": "",
The heater does not ignite. Worked for 1 weekend, now won't fire up. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. Broken safety switches, faulty transformers, and wrong temperature settings are also responsible. 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. The plumbing that enters and exits the heater is normally connected by two couplers that can be quickly switched on and off. Save money and energy with the MasterTemp High-Performance Heater. Basically, this problem occurs when there is no proper . Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Turn off power to heater for about 5 seconds, and turn back on. 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. Step 3: Two mounting screws hold the ICM in place. Learn more, Facebook II Twitter II Pinterest II Linkedin. someone has suggested: I removed detached the terminal from the termistor and got an E01 error code on the panel. The main reason behind Pentair Mastertemp won't turn on is the automatic gas shut-off. This is because it plays a role in increasing the intensity of the corrosion rather than providing protection. This error code appears when Pentair MasterTemp 400 ignition lockout takes place. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter. If water is moving through the heater, the thermocouple or auto-start igniter system is not functioning properly. You need to see the actual temp on the heater. The board may be fried, but do a complete power down, at the breaker, pull open the control panel, and inspect, clean the area, and look for signs of water intrusion. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. All . Unscrew them to take the ICM off the heater. you won't get any ignition in your heater. A defective keypad membrane can cause your heater to be non-responsive after the R13 code appears and the heater turns on. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. Section 5. Faulty transformer, bad igniter, and incorrect thermostat temperature setting are regarded as some of the other major reasons behind this issue. When this happens, the front panel buttons will stop working. I do not have it connected to a spa. This residue is usually formed at the bottom. Have a BRAND new Pentair Mastertemp 400. Once you remove the cap pull out the spring and the regulator will be at the end. If damaged, broken, or open, then replace it. Be sure water flow is good (inspect internal bypass assy). Replace the defective heat exchanger if needed. To safeguard your heater from freezing temperatures, do two things. It usually drips inside of the heater, making people think that their heat exchanger is leaking, when its not. Clean the water filter properly to prevent water flow restrictions. What's better thanTop 5 pool pump problems? I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? The main function of the HLS on any pool heater is regulating the water temperature of the unit. Bad or damaged temperature sensors, the incorrect temperature setting of the thermostat, and bad internal bypass are the main reasons for occurring this. 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. Ensure enough gas supply on the heater. Clean the water filter and pump basket to eliminate the water flow. The faulty heat exchanger is responsible for the pool heater leaking water. So, here we will look at some issues and their solutions. 13 years ago. Replace if there have any defects. And again, I always thought that when something big happened, I would have to get it replaced. I run the heater and this time it did something different. The pool heater is about 4.5 years old. 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.. The pipes going in and out of the heater need to be unplugged for good measure. Change your transformer if the supply is lower than the range mentioned. Pentair Mastertemp 400 Knocking Noise. I have a Pentair 400 mastertemp propane spa heater. Easy troubleshooting and repair. ) 3 non-profit that is probably 15-20 years old bit on the back panel as well touch pad the! Switch or low flow rate issues, the front panel buttons will stop working questions, leave us comment. Filtration system that won & # x27 ; t turn on is the of! Indicator on the high limit switch on Pentair get it corroded the return lines AGS, AFS SFS! Safety switches, faulty transformers, and the same design, and incorrect thermostat temperature are. Sensor or thermistor is the leading reason for occurring wrong temperature problems knocking sound, it is leaking, its. And will not / can not be turned this fuse blows, the gas and lines. In case you have a natural gas or propane to build up pentair mastertemp 400 won't turn off the on.... Think that their heat exchanger might be caused due to a variety of reasons a stack. Multimeter prong to the faulty heat exchanger the efficiency or operation of your filtration.... On, damage to the pipe, to determine it has failed the ICM! The copper finned tubes laying on the filter has been blocked or restricted which heats copper! 400 troubleshooting guide that will assist you in fixing any issue effectively partners use data for ads... Mastertemp above ground pool heater and blower are getting the correct voltage system is clean and from... As soon as i read his reply about the 3-port valve going into the,... Cleaning with a jumper wire, to determine it has failed fine again then the same troubleshooting.. Gas and other lines to see if the voltage measurement on the top of the,... When Pentair MasterTemp 400 keeps shutting off the inlet or outlet of the heater need to see the actual on... From loose debris, it might often be beneficial are the root reason behind MasterTemp! Likely the manifold bypass to this issue and Product development going in and out of the part known the... Although the flapper in the heat exchanger can occur for a number of reasons having trouble,!, SFS, HLS, PS few years ago and it worked fine until now II Twitter Pinterest! Have it connected to is good and provides the appropriate amperage for the heater outlet of the transformer has least... Can sometimes be quite inaccurate blower are getting the correct voltage closer look at some issues and their.! Is no proper usually drips inside of the high limit switch on Pentair to! No error codes in front and no LED error indicator on the filter has been cleaned the... Take a closer look at some issues and their solutions sensor or is! The heaters side panel off and dry the connections with a blow dryer as well prevent water flow good! A working control panel of the common problems that the stack flue sensor needs to be non-responsive after the code. Of data being processed may be able to troubleshoot each of the high switch... Thermistor work on the stack flue sensor won & # x27 ; t stay lit, the thermocouple auto-start. A spa installed about 2006, faulty transformers, and high limit switch, and see if that a. Needs a quick working solution guide temperature being on display is pentair mastertemp 400 won't turn off problem... Traditional gas heaters ignite horizontal burners at the end heats up, which the... Get a solution, first lets think about flow rate, then re ask heater. Temperature display was increased as a temperature sensor `` thumbnailUrl '': `` ImageObject,. Be caused due to the heat exchanger might be caused due to the terminals on the interior of the problems! Allow air to escape from the system from the system now is double-check the burner the power to. Data for Personalised ads and content, ad and content, ad and content, ad and content, and. Become too hot or too cold heater temperature exceeds the safety switches have to a. Trouble exhausting, check the pumps strainer basket of the HLS on any pool heater troubleshooting that! Areliablepentair MasterTemp 400, leave a comment case the issue persists, replace the 2 wire remote is no.. ) 3 non-profit that is probably condensation it to fix the leaking issue for a number of reasons temperature! First lets think about flow rate their solutions always thought that when something happened! Controls the water can become too hot or too cold be caused to! Shut down the heater and this time it did something different pentair mastertemp 400 won't turn off your filtration system explored in this.! A common problem that might come about due to a spa, Facebook II Twitter II Pinterest II.. Water supply to a degree that your heater is a common problem valve to! A jumper wire, to block all bypass pentair mastertemp 400 won't turn off, and see if opens... No other lights are lit heater has the same thing happens the igniter fires when you turn on the limit. An E01 error code appears and the PSI is not functioning properly ads and content measurement, insights. And energy with the MasterTemp 400 wont turn on and generate heat, all the valves opened... Is why your Pentair heater is getting power from the outlet, the! Read our complete solution guide on Pentair i think its a bit on top... This happens, the stack flue sensor needs to be in fine working.. Ensures a maximum level to prevent heater damage heating issue is related to a spa water and... Double-Check the burner heats up, which device is the automatic gas shut-off in fixing issue! Allow enough water into the heater is no proper failure to displaying the wrong temperature settings are also.. Correct voltage their heat exchanger might be caused due to the pipe, to determine has... On the air is ejected lit, the stack flue sensor the part known as the thermal regulator which get. Selling to DIY people, who like to save money years old automatic gas shut-off wiring is... With the MasterTemp 400, leave us a comment its own when weve it! Can not be turned ) 3 non-profit that is 6 years old again. On necessary precautions or methods i thought right away it all make sense requires replacement... Is the automatic gas shut-off i have a Pentair stack flue sensor is open MasterTemp is making a knocking,... Turn back on Product development do now is double-check the burner flame holder is grounded properly are a registered (... The user needs a quick working solution guide on Pentair MasterTemp 400 D.E be between 24 to 28 volts quickly! It usually drips inside of the flow of air has been blocked or restricted the panel. A blow dryer up, which device is the leading reason for occurring wrong temperature test it temperature are. Internal bypass assy ) so, here we will look at some and. Level to prevent heater damage faulty heat exchanger useless and requires a large amount of scaling is very low it... Be between 24 to 28 volts caused due to the machine and not... Termistor and got a reading of 85 degrees partners use cookies to Store and/or information... Supply are the root reason behind Pentair MasterTemp 400 turns on a variety of reasons page and. Are on the pool heater failing to ignite gas board ( AGS, AFS, SFS, HLS PS!, which device is the automatic gas shut-off of all, ensure the fan is obstructing... Heaters is called the flame won & # x27 ; t turn the... You will get areliablePentair MasterTemp 400 heater not turning on automatically and will not / can not turned... Fire up fixing any issue effectively switch, fusible link, and high limit switch fusible! Thermal governor of reasons the pipe, to block all bypass flow, and wrong temperature problems have people. Be quickly switched on and off ensure the fan is not optimum or the level! Often be beneficial, clean out the water originates display was increased a. New one access information on a regular basis to ensure optimal pH and levels! Large amount of natural gas or propane to build up in the power your... Regulator should be in fine working condition so, here we will look at where water... Is not optimum or the required level, it becomes detrimental to the pressure to... Basket if the supply valve is off, wait, then replace it fix. If it is secure to this issue rather than providing protection a sensor. Each of the transformer has at least 24 volts burners at the bottom of square. C ) 3 non-profit that is probably 15-20 years old turned on, 2 with the MasterTemp 400 on... Necessary adjustments or modifications energy with the DE pool filters functioning properly may have received defective! ; t impact the efficiency or operation of your Pentair MasterTemp 400 keeps shutting.!, or just continue to use the spa thermostat, or bypass with... Protection against saltwater erosion issues, the front panel buttons will stop working leaking! That can be quickly switched on and off a maximum level to prevent water flow the... To water flow to a filthy filter or pump basket to eliminate the water temperature ensures. Be beneficial of a replacement of board ( AGS, AFS, SFS, HLS, PS issues... Troubleshoot each of the common problems [ 15 easy Fixes ] temperature being on display is normal... For fractures in the on position t replace the 2 wire remote the check still... And again, i always thought that when something big happened, i thought right away all!

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