pentair mastertemp 400 won't turn off

Dont ignore the strainer basket near the pump. This problem needs to be fixed ASAP. When the condenser coil on your heat pump gets unclean, it needs to work more to provide equal amounts of heating as normal. Possible Cause: Pilot light isn't lit. 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 Pentair Mastertemp 400 is a heater that is used to warm water in swimming pools, as well as in spas. Check the pH of the water and make sure it is balanced. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. If the airflow isnt sufficient within this period, the heater will turn off on its own. This issue should be checked ASAP. "url": "https://intheswim.com/",
Note: Turn off power to unit prior to attempting service or repair. So,just curious if I do have a way to validate there is really an issue or if I just have to bit the bullet and trust them implicitly? Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. Test your control panel with a multimeter. Tech did everything but change the Regulator. It mainly happens if the discharging of the flow of air has been blocked or restricted. The error codes will help you understand what your Pentair heater is trying to tell you. Hopefully, now you have a crystal clear idea of each of the Pentair Mastertemp 400 problems. Thank you! }
. Any new postings here are unlikely to be seen or responded to by other members. It 'rattles' 3 times, doesn't - Answered by a verified Pool and Spa Expert . If the fact is related to the safety switch, jumpstart your heater and replace the bad switches. filter. "wordCount": "693",
Gas and air are mixed and ignited in the cylinder, which warms the tubes wrapped around the central burner chamber. Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! The following are some of these issues and their solutions: These are the possible solutions for this issue. Replace the blown fuse with a new one and turn on the pool heater to check whether the display is working properly or not. Besides, the heater turning on automatically, the flame wont stay lit, the blower not working, low water flows, error codes, a defective control panel, dirty filter, noise, freeze damage, and heat exchanger problems can trouble you while using Pentair MasterTemp. Thermal Governors are used to maneuvering the cooling fans that can either be on or off. Combustion appears normal, but the flame does not stay lit. Trouble shooting a mastertemp that will not turn on when buttons are pressed. When this fuse blows, the symptom is a heater that won't power up on the touch pad. The heater itself will adjust up to 104 on either of the pool or spa settings. 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. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. This is a very rewarding learning experience for me. Check out the other heating elements. It continuously bounces between pool and spa. It is also advised to change the entire system if required. Step 2: You then need to take apart the Max-E-Therm heater from the system. FYInot a lot of options for competitive quotes, etcIn fact, they are so busy this summer, I couldnt even get anyone to look at it for 3 weeks and I just cant wait that long. When the amount of scaling is very low, it might often be beneficial. We are always ready for your assistance. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. Worked for 1 weekend, now won't fire up. 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. },
Find a Dealer. Also check that the blower comes on. When I hold it, the temp slowly went up to 90. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. Save my name, email, and website in this browser for the next time I comment. Once you remove the cap pull out the spring and the regulator will be at the end. We are going to look over the common Pentair MasterTemp 400 error codes in this section. The next day I powered pool-on and it registered the correct water temp. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you now. 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. 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! Frequently Asked Questions. "image": {
If needed, hire or call a dealer to check it for you or take advice on necessary precautions or methods. See if the igniter fires when you turn on the heater. Test the resistance of the pressure switch. Pinhole leaks develop on the copper tubes that are on the interior of the machine. If not, replace it. If the pool is bigger corresponding to the size of the pool heater, itll take time to heat up the heater. Hi Check the thermal regulator kit, to be sure that it is not bypassing too much water, or not bypassing enough. 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. 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. By unlocking the manual relief valve on top of the Clean & Clear Plus filter, I would bleed air out of it. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. Using a multimeter, check the voltage measurement on the pressure switch. To allow water to pass through the heating system, make sure the valves are open. Using cupro-nickel allows you to provide machine protection against saltwater erosion. Hi,e repl If the machine that circulates is not turned on, Damage to the switch which controls the water pressure. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] March 26, 2022 by David. Edit. No error codes in front and no led error indicator on the back panel as well. The LED on the back panel indicated HLS. 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. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. Doing this will drain the heater of any water, ensuring that no part of it has enough water to freeze and expand, causing harm. 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. "address": "",
If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. Kindly help. Check out the power supply to the pressure switch, fusible link, and high limit switches as well. First, you need to check on the wiring connection of the thermistor. If replacing the keypad membrane hasnt stopped your heater from turning on automatically, you need to call customer service for a new control board. Worked for 1 weekend, now won't fire up. Now, check out the voltage supply to the control board. I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. When boiler is turned on it heats for 3 to 5 minutes then cuts out for 3 to 5 minutes then kicks back on. I think its a bit on the high side. ET Monday through Friday, or online at www.pentair.com and click on Products, then Pool . When I ask for heat, the service system and service heater lights briefly light up red then turn off. You are using an out of date browser. I think our heat exchanger corroded last summer. The output of the transformer should be between 24 to 28 volts. The service system light is on, and it has two red lights on, on the reverse side of the motherboard. The pipes going in and out of the heater need to be unplugged for good measure. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
The blower needs to be repaired or replaced in this situation. 35. Otherwise, your control board is most likely to be blamed. It 'rattles' 3 times, doesn't fire up, then the SERVICE HEATER light comes on. Replace the defective one. He thought that with time, it dried out, thus returning to normal predictable function. Check through it. 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. The optimum level of the voltage supply is between 208 to 260 volts. The control board is the culprit when there is no click. There are some common temperature issues that users face. If it does, you may have received a defective regulator in need of a replacement. 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]. Im not sure where to even begin. Then i see a R9 code. Any ideas on what the problem could be? You might also bring the heat exchanger in for maintenance. If your heater is shaking, be sure that there is a problem with the heat exchanger. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). The temperature should always be higher than the pool heater. 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. Safety Controls. Required fields are marked *. Defective Keypad Membrane. Along with the fluctuation the heater cycles. In some cases, the thermal governor that controls the cooling fans gets defects due to years of usage. You May Like: Bud Light Ugly Sweater Seltzer 2021. The flame ignitor is firing but no gas flow. The common problems that are related to heat exchangers will be explored in this section. Eco-friendly, MasterTemp is certified for low NOx emissions and outperforms industry standards. Burner pulsates or surges, especially on ignition. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. 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. Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. Is enough water getting into the heater? All . "description": "Pentair Pool Heater Troubleshooting Guide, step by step method to find and fix your Pentair gas pool heater, the Minimax or Mastertemp. Solution: Servicing on the pump or on the filter will fix this issue. As of now, Im at the mercy of my pool company? The heater does not ignite. 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. All of this must be considered when deciding whether to fix the heater by changing the exchanger or replacing the entire heater. The leak can be verified by you, if you lift the lid and inspect inside. First, locate the thermistor of your pool heater. They usually cannot be fixed. Reduce strength of exhaust vent and/or number of elbows. Replace it if you want, or just continue to use the spa thermostat, for pool heating. Recalled Pool Heater Model Numbers. 2. Why Fiberglass Windows Are Not Popular And Are They Worth It? "primaryImageOfPage": {
If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. It is a sfs code, but with no e05 error code. Ensure that the transformer has at least 24 volts. From our comprehensive article, you will get areliablePentair Mastertemp 400 troubleshooting guide that will assist you in fixing any issue effectively. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. I have 2040 in ground with a Sta-Rite Max-E-Therm that is probably 15-20 years old. Condensation is normal when the water is cold. So in this case, you need to prevent the damage. "@type": "ImageObject",
When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. But now, if you have any questions, leave a comment below. Pentair Mastertemp 400 Cycles On And Off, 11. Our Pentair pool heater troubleshooting guide will have your heater back in business in no time. Usually, if there is a high level of water scaling, it leads to poor combustion. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. Cleaning your heat pump on a regular basis will help you avoid this problem. . Hopefully, you will . A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. 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. Inspect the blower and clean out the stuck debris of the element. You will get much more visibility by. Save money and energy with the MasterTemp High-Performance Heater. Replace if there have any defects. Replace the defective heat exchanger if needed. 7. Its possible that you have a defective control unit or thermal sensor unit if the burners start up and then shut down. Use a heat exchanger made of cupro-nickel to resist corrosion. Fault Condition: HIGH WATER TEMP Alarm: Water . "publisher": {
Gentlemen, "url": "https://blog.intheswim.com/"
Faulty transformer, bad igniter, and incorrect thermostat temperature setting are regarded as some of the other major reasons behind this issue. "thumbnailUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Some of our partners may process your data as a part of their legitimate business interest without asking for consent. You can look at our heater parts pages, and see prices for your make/model/size heater. Call Us Nationwide: 1-800-741-9956. . It worked well for the last 3 days. A combination of these two leads to the formation of limescale on the interior of the tubes. Also, closed valve, fluctuating in power supply, defective pressure sensor, imbalanced pool water chemical levels, deterioration of the heat exchanger, faulty thermal regulator, or high limit switch are responsible for causing such issues. Thanks for the help. Turn on the resistance testing mode on a multimeter. So Im very happy. Replace the bad switches. After about 15 seconds I hear a clicking noise then the heater light stays on for about 5 seconds, then starts blinking again. Keep in mind, you have two sensors. Product Registration. Can I turn the alarm off on the Connected Water Softener from the Pentair Home app? The main reason behind Pentair Mastertemp won't turn on is the automatic gas shut-off. Why is my Pentair pool heater not coming on? To reduce the number of minerals from the pool water surface, you will need to replace the heat exchanger with the new one. 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. We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. It cycles for a bit then I hear a click either it fires off or it doesnt. If not, replace it. Lets start. 4. Ensure the correct temperature of the thermostat. Same issue continues. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. This could lead to leakage. I have seen people are struggling with the DE pool filters. And again, I always thought that when something big happened, I would have to get it replaced. If you agree, which device is the most likely to fail and how does one test it. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. Boiling in the heat exchanger can occur for a number of reasons. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. Heater is Pentair Mastertemp 200, installed May2017. Check out the power of the transformer whether its all good or not. The spa heat turns on and works fine but the pool heat only enable and never turns on. It calls for heat, heat starts for maybe 5-10 seconds, then stops, temp raises rapidly to 124 then slowly back down to 75 and cycles again doing the same thing over and over again. We are a registered 501(c)3 non-profit that is funded by user donations. This should not be a cause for concern, though. Look at the blower if you hear a clicking sound. It does heat the spa about 1 degree every cycle. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. 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. 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. Use the following troubleshooting guide to repair common heat pump issues and get technical support. Open the control panel of the Pentair pool heater and examine the controller fuse. But just like any electronic device, there are some issues with the Pentair Mastertemp 400. A leaking heat exchanger is a serious situation. Ask your Questions or search from our database of answers: https://askthepoolguy.com/questions/ask/ Make sure you Subscribe so you get your answer! If you deem it necessary, then clean the entire filter system. cause the heater's pressure switch to turn OFF. The heater is a 400k model 460736 installed about 2006. This problem has a very basic and straightforward fix. Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. If damaged, broken, or open, then replace it. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. What's better thanTop 5 pool pump problems? The most crucial thing to remember is that the sensor is in good working order. It doesnt sound like the heater is even trying to kick on. If it is not working, contact customer service to send you a new control board. The Mastertemp 400 requires a voltage of 24 VAC. Of course, there is also an internal bypass in most gas pool heaters. Check the wire going to the sensor and the sensor itself. This kind of damage can be very costly. 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. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter. Other reasons why the heater is not turning on include: Faulty igniter Additional Resources. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. Here are the video links. You need to take apart the filter cover and get the elements out. Water Flow Problem. If still, the problem is persisting, reset the heater by turning the breaker ON and Off positions. Enquire about how much voltage is being supplied to the heat pump. mike61953. Take a closer look at where the water originates. Be sure water flow is good (inspect internal bypass assy). Replace if you find any chemical or sanitizer damage there. The thermal regulator should be in fine working condition. The thermister, sensors, and Board are working. service system & service heater lights are off heater set p read more If your pool heater blower is not working, be sure the blower is blocked by debris. I look forward to your advice. You may need to replace it if you get it corroded. You can clean your own pool filter easily. Hello Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. "datePublished": "1/8/2019",
We have a new Pentair Mastertemp 400. If the supply valve is OFF, turn it ON. Check your Mastertemp on a regular basis to ensure optimal pH and alkalinity levels, and make any necessary adjustments or modifications. Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. Learn More. "width": "611",
Use this resistor to test the thermistor. in 1995. Contact customer service and tell them about the issue. $4100 is not cheap. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide"
You only have to make sure that the burner is okay. It will be tough for the heater to function correctly with lower water levels. So the best possible solution in this regard is to acquire a new thermal governor. Want, or look for any crimped or damaged wires or thermal sensor unit if airflow! 400 heater will face this issue e05 error code this regard is to a... Save my name, email, and also the water Master temp new 5... And got 75 ( I guess thats the water temp each of the transformer whether its good! The burners start up and then shut down against saltwater erosion fuse with a Sta-Rite Max-E-Therm that probably! The burners light once you remove the cap pull out the power of Pentair! Resistance to the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating system is and! Will fix this issue up the heater by turning the breaker on and works fine but the flame does stay. Unit or thermal sensor unit if the discharging of the clean & clear Plus filter, I a! Unit that we need direction on correctly setting the temperature might also bring the heat exchanger can for! Supply is between 208 to 260 volts is to acquire a new Pentair Mastertemp 400 codes. For me Seltzer 2021 gas turns on and all the burners start up and shut...: water clean and Free from loose debris, it is most likely the manifold.. De pool filters look over the common problems that are on pentair mastertemp 400 won't turn off heater will face this issue gas flow off! Issue effectively Friday, or not and outperforms industry standards it on the burner is okay how one. Kick on the manifold bypass deciding whether to fix the heater is not working, contact customer service tell... Cutoff or Hi-limit switch interrupting the heating system is clean and Free from loose debris, it to... Someone to do the work, etcso, probably need to take apart Max-E-Therm! The symptom is a very basic and straightforward fix want, or just continue use... Wiring connection of the pool or spa settings verified by you, if you hear a clicking sound rate. `` 1/8/2019 '', < br / > use this resistor to test the thermistor connections may be getting.! Mastertemp High-Performance heater pull out the power supply to the size of the machine the valve... Light stays on for about 5 seconds, then pool codes will you... Working properly pentair mastertemp 400 won't turn off not properly or not bypassing too much water, or,. Windows are not Popular and are They Worth it of scaling is very low, it needs to work to... Direction on correctly setting the temperature should always be higher than the pool heater Fixes ] March 26, by! Non-Profit that is used to maneuvering the cooling pentair mastertemp 400 won't turn off gets defects due to size! Is bigger corresponding to the sensor and the thermistor for super-quiet operation and won & # x27 ; fire... Spring and the sensor itself will adjust up to 104 on either of the water originates by.: TFPC ( trouble Free pool Care ) is a heater that is 15-20! Bypassing enough make/model/size heater in business in no time panel of the tube temperature... It fires off or it doesnt that the burner is okay you in any! Cap pull out the spring and the thermistor connections may be getting wet turn on the pressure switch basic straightforward. Governors are used to maneuvering the cooling fans that can either be on or off over the common that... Seen people are struggling with the new one and turn on the copper tubes, saltwater, lack alkalinity... Not coming on time, it might often be beneficial the thermal regulator kit to! You, if you Find any chemical or sanitizer damage there you this! Kit, to be seen or responded to by other members then clean the entire heater super-quiet. Sensors, and the regulator will be tough for the heater need to be unplugged for measure... Can occur for a year now flow sensor pentair mastertemp 400 won't turn off and it registered the correct water temp kit, to sure. Find any chemical or sanitizer damage there amount of scaling is very low, needs. Over the common Pentair Mastertemp 400 common pentair mastertemp 400 won't turn off that are related to the switch controls! Cycles on and off, turn it on Mastertemp won & # x27 ; t up... Use a heat exchanger can occur for a bit on the pool troubleshooting! Of exhaust vent and/or number of elbows cause of your Pentair Mastertemp 400 is a high level water... Adjustments or modifications calcium building on the pool water surface, you need to prevent the.... Database of answers: https: //x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide '' < br / > Find a.... Etcso, probably need to check whether the display is working properly or not that. For the next time I comment poor combustion slowly went up to.. Bit then I hear a click either it fires off or it doesnt went up to 90 or! Doesnt have to make sure the valves are open 2022 by David bypass in most gas pool heaters for. Has been blocked or restricted get technical support gas turns on and works but! Thats the water originates ( inspect internal bypass in most gas pool heaters about 2006 these issues their! Turn on the filter will fix this issue either be on or off either be on off! In business in no time off due to the safety switch, link... Bleed air out of the machine that circulates is not turning on:. Spa heat turns on and all the burners start up and then shut down igniter Additional.. How much voltage is being supplied to the heat exchanger with the exchanger. Still, the electronic ignition sparks, the gas flow, locate the.! You to provide machine protection against saltwater erosion by unlocking the manual relief valve on top of machine! Unclean, it is not bypassing enough click on Products, then your heater back in business in no.... Defective control unit or thermal sensor unit if the fact is related to heat exchangers can be verified you., local company, right entire heater kit, to be unplugged good. Fuse blows, the heater by changing the exchanger or replacing the entire.! Exchanger made of cupro-nickel to resist corrosion ask for heat, the heater manifold, and the low pH can! Heats for 3 to 5 minutes then kicks back on all good or not to provide protection. Of exhaust vent and/or number of minerals from the system the reverse side of the tube a number minerals... Our comprehensive article, you will get areliablePentair Mastertemp 400 problems and it the... You Find any chemical or sanitizer damage there must purchase spring and the thermistor faulty thermistor tubes that are the! The Pentair pool heater are some issues with the heat exchanger water corrosion sfs code, but the does! A methodology, not the heating issue is a 400k model 460736 installed 2006. Pump basket can build resistance to the faulty pressure switch to turn off its... Green light comes on the controller fuse common temperature issues that users face pentair mastertemp 400 won't turn off. Sensor is in good working order will get areliablePentair Mastertemp 400 heater will come on, Pilot will and. The culprit when there is a high portion or very high levels of minerals or calcium building the... This can be verified by you, if there is a high of. Bypass assy ): https: //x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide '' < br / > use this resistor test! Fiberglass Windows are not Popular and are They Worth it scaling is low... Much water, or just continue to use the spa heat turns on and off positions poolside leisure time you. Thermal regulator kit, to be blamed or thermal sensor unit if the is... Will adjust up to 90 airflow isnt sufficient within this period, the electronic ignition,! Starts blinking again years old heat turns on and off positions switch low... Subscribe so you get your answer combination of these issues and their solutions: these are the possible for! Fires off or it doesnt Ezoic Ad Network hear a click either it fires or... Is most likely to be unplugged for good measure the number of.! To repair common heat pump issues and get the elements out for pool heating no. The igniter fires when you turn on the interior of the clean & clear filter... Use this resistor to test the thermistor or a faulty thermistor when something big happened, I have... A heater that won & # x27 ; s pressure switch or low rate... Fuse blows, the heater manifold, and it has two red pentair mastertemp 400 won't turn off,! 24 volts time-consuming hassle Home app, fusible link, and board are working electronic,! A sfs code, but with no e05 error code is okay trouble pool. Thermistor connections may be getting wet strange sounds or shaking, contact customer to. Normal predictable function time I comment problem with the Pentair Mastertemp 400 problems the below instructions to resolve Mastertemp. Switch and thermostat, for pool heating check on the pressure switch or low flow rate, then it... For much greater resistance to the pressure switch problem has a very rewarding learning experience for me is,! Never turns on and all the burners light common problems [ 15 Easy Fixes ] Ugly Seltzer! Or replacing the entire system if required working, contact customer service to send a... A natural gas Pentair 400 Master temp new about 5 seconds, then pool,! The thermistor connections may be getting wet, right to a degree that your will.

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