pentair mastertemp 400 won't turn off
Heater is Pentair Mastertemp 200, installed May2017. If the airflow isnt sufficient within this period, the heater will turn off on its own. A leaking heat exchanger is a serious situation. We are a registered 501(c)3 non-profit that is funded by user donations. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. The flame ignitor is firing but no gas flow. And again, I always thought that when something big happened, I would have to get it replaced. You need to take apart the filter cover and get the elements out. It mainly happens if the discharging of the flow of air has been blocked or restricted. The solution to your heater issue is given in your previous comment. spa light is on. Hello Condensation is normal when the water is cold. Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. You may need to replace it. so does the heater actually turn off when you use the automation to turn it off? It 'rattles' 3 times, doesn't - Answered by a verified Pool and Spa Expert . There is no error code or red service heater light on. They usually cannot be fixed. 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. On the thermostat, set the correct temperature. Check and rid the pump impeller of any dirt stuck inside. So you could save $1000 by buying online and having a company install. I have a MasterTemp 200. follow our solution guide on Pentair Mastertemp 400 not heating section from Pentair Mastertemp 400 Common Problems. They will help you out with replacing your control board. "publisher": {
When this fuse blows, the symptom is a heater that won't power up on the touch pad. Continue with Recommended Cookies. A sparking igniter is in good working condition. It 'rattles' 3 times, doesn't fire up, then the SERVICE HEATER light comes on. Dont stress! I only found 1 small stone stuck inside where the bypass is. Did you replace both Hi Limit Switches? If the machine that circulates is not turned on, Damage to the switch which controls the water pressure. Some of these problems and their solutions are mentioned below: Reason 1: The flow of water to the heater has reduced. In case there is blockage in the heat exchanger, how do I fix that? The mastertemp display doesn't light up when controlled remotely. Besides, the heater turning on automatically, the flame won't stay lit, the blower not working . Contractor's Assistant: . },
As of now, Im at the mercy of my pool company? The wiring diagram is given below for your reference. It is inevitable for any electrical device to incur damages after a while of usage. View online or download Pentair MasterTemp 400 Brochure. You can look at our heater parts pages, and see prices for your make/model/size heater. I just didnt trust them anymore. I have a Pentair Master Temp 300 Pool Heater that is 6 years old. Edit. Do we have to adjust the temperature and then hit the select button to lock it in? The Mastertemp 400 requires a voltage of 24 VAC. If not, replace it. Have a BRAND new Pentair Mastertemp 400. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. It kept doing this several times and then sometimes the temp will start counting up rapidly and slowly counts down to the current temp and cycles again. Check through it. Check out the pressure sensor, thermal regulator, or high limit switch. One of the biggest fears any owner of a Mastertemp has is the corrosion of the heat exchanger. 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. Can you give some thought? Reduce strength of exhaust vent and/or number of elbows. Pentair MasterTemp 400 natural gas heater won't ignite. https://w. Follow this video below for instructions on Pentair MasterTemp 400 control board replacement. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. Step 2: Disconnect the system from the Max-E-Therm heater. It means that the ignition control module has failed to ignite the heater. Open the control panel of the Pentair pool heater and examine the controller fuse. I tried removing spring on the flap and run the heater, the flap was opening in full, but heater was still giving me the same issue so I re-inserted the string back. Solution: Inspect the heater's gas valve, and check that it's set to the "OPEN" position. Test your control panel with a multimeter. Check the wire going to the sensor and the sensor itself. "description": "Pentair Pool Heater Troubleshooting Guide, step by step method to find and fix your Pentair gas pool heater, the Minimax or Mastertemp. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Manage Settings 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. 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. We manually turn up the temp to a warmer setting when we swim while the system is running. 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. To troubleshoot each of the above issues, the user needs a quick working solution guide. Inspect the blower and clean out the stuck debris of the element. IF it stays running, first look for a cause of overheating, such as poor exhaust thru the heat exchanger or out the top, or debris on the burner tray, or low water flow, or it could be a faulty hi-limit switch (there are two hi-limits, a 135 and a 150. Have a BRAND new Pentair Mastertemp 400. Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. "image": {
Beyond that, look thru this troubleshooting guide and consult your pool heater owners manual, as I cannot troubleshoot your heater from here. Tech did everything but change the Regulator. The heater read more . It does this over and over . In some cases, the thermal governor that controls the cooling fans gets defects due to years of usage. Pentair MasterTemp 400 wrong temperature being on display is a common problem. I had to turn off . Solution: The solution to this problem is actually very simple and easy. Check your Mastertemp on a regular basis to ensure optimal pH and alkalinity levels, and make any necessary adjustments or modifications. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
In case the burner is broken, remove it and replace it with a new one. Usually, if there is a high level of water scaling, it leads to poor combustion. Thanks for the help. In some cases, the water can become too hot or too cold. Use this resistor to test the thermistor. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. I installed a Ta60d sand filter three weeks ago and it worked fine with it until two days ago. Safe operation is assured through a series of features . Solution: Alter the chemistry of the water and reach an equilibrium. We are always ready for your assistance. This is a common problem that might come about due to the failure of the part known as the thermal governor. "@type": "BlogPosting",
Along with the fluctuation the heater cycles. Make sure that the filter of the heater is cleaned as well. You might also bring the heat exchanger in for maintenance. Gas accumulates at the orifice until it reaches the chambers interior, causing a backfire. You May Like: Bud Light Ugly Sweater Seltzer 2021. 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? Step 3: Two mounting screws hold the ICM in place. The pool heater is about 4.5 years old. Solution: Replace the thermal governor with a new one. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. Step 4: Now take the new ICM and put it in the Junction Box chamber. Operating Control Panel. Sometimes users have the experience of a low heating problem, or the heater is totally out of its duty. Possible Cause: Gas supply valve. Hi, I noticed in the video that there is an external bypass going in/out of the heater. {
After about 15 seconds I hear a clicking noise then the heater light stays on for about 5 seconds, then starts blinking again. 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. 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. When the folks came to open my pool last week, they said it was leaking and that the owner was coming out to look at it. Im so glad I didnt have to buy additional parts. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. Usually, pool water needs a balanced amount of chemical levels on the surface, which acts as a barrier against corrosion. Follow the below instructions to resolvePentair Mastertemp 400 keeps shutting off and on issue: Knocking sounds occurs due to the clogging in the skimmer or the strainer basket of the pump or the pool. After long usage of the thermal governor stops working permanently, thus it cant be fixed by any means. First, check that the fuel supply is adequate and the gas pressure is good. "mainEntityOfPage": "https://blog.intheswim.com/pentair-pool-heater-troubleshooting-guide/",
Pentair Mastertemp 400 Displaying Wrong Temperature, 3. Then I commanded a higher water temp, and heater came on as it should, reaching set points and shutting off burner as it should, then cycles on as water temp dictates. The leak can be verified by you, if you lift the lid and inspect inside. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. It worked well as usual, heated water to 85F as commanded. Education Center. So I thought that was causing the problem. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. 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. As we have seen, there are some Pentair Mastertemp 400 common problems that may also face. 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 Knocking Noise. Thermal Governors stop working primarily due to years of usage. Adding MA is a normal and expected process to help keep it in check. JavaScript is disabled. It does heat the spa about 1 degree every cycle. This problem has a very basic and straightforward fix. "@context": "https://schema.org/",
If damaged, broken, or open, then replace it. Finally, set the thermostat temperature correctly. Ensure enough gas supply on the heater. Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. 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. "datePublished": "1/8/2019",
Now, we make a living selling to DIY people, who like to save money. 4. We have a new Pentair Mastertemp 400. },
Other reasons include blocked filter or pump basket, ignition malfunctions from the pilot lit, undersized pool heater, or severe defects on the heater elements. Also check that the blower comes on. Measure the voltage of the heater transformer. Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. Verify pressure tap between gas valve and blower inlet. Replace in case necessary. 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. This problem can be resolved by servicing the pump or filter. 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. No error codes in front and no led error indicator on the back panel as well. The heater does not ignite. "keywords": "",
Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. Do any diagnostic LED’s on back of board (AGS, AFS, SFS, HLS, PS . Voltage checks have the potential for a lot of danger. Articles and resources for swimming pool owners and DIYers. Sometimes, a clogged water filter restricts the water flow and overheats the heater. Replace all the defective ones. Wash them out very carefully with a hose. 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. 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. 3. Test your fill water too. 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. Reason 4: Thermal Governor has got stuck and is not opening. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. Then it came back on without my doing, switched to spa mode and commanded 110F setpoint. It fires up fine again then the same thing happens. If so where is it located and how much does it cost. Boiling in the heat exchanger can occur for a number of reasons. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. See page 16 and verify the gas regulator is -0.2 wc. 6. Something mild to someone might be too hot or too cold for another. The thermister, sensors, and Board are working. Also could possibly have circuit board problems. You can try replacing the control board yourself in case you have some electrical knowledge. Among the most common problems associated with all pool heaters and not the Mastertemp 400 alone is inaccurate temperature control. After just a few minutes on heating, the burners shut off, before the water is warm. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. You may safeguard your equipment from seawater erosion by using cupro-nickel. Frank. 13 years ago. 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. After persisting in this issue, you will hear a sound like a bumping sound from the heater. Thermal Governors are used to maneuvering the cooling fans that can either be on or off. "height": "219",
Hi Check the thermal regulator kit, to be sure that it is not bypassing too much water, or not bypassing enough. If the fact is related to the safety switch, jumpstart your heater and replace the bad switches. Why Fiberglass Windows Are Not Popular And Are They Worth It? Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. If still, the problem is persisting, reset the heater by turning the breaker ON and Off positions. The thermal regulator should be in fine working condition. If the thermistor is in good condition, then replace the circuit board. Check for wet or damaged igniter with low resistance to ground. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! If you have a Pentair MiniMax NT and are experiencing technical issues, this blog is for you. The accumulation of minerals on the surfaces of the pipes acts as a barrier against corrosion. 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. Same issue continues. 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. Might charge under $500 to install. Broken safety switches, faulty transformers, and wrong temperature settings are also responsible. Pentair Pool Filters, Pool Pumps, Pool Heaters, Pool Lighting & Pool Automation. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. Fault Condition: HIGH WATER TEMP Alarm: Water . Im not sure where to even begin. This should not be a cause for concern, though. The pool system must sustain the water flow in order for heaters to perform efficiently. Pentair Mastertemp 400 Cycles On And Off, 11. Replace the bad switches. 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? This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. It cycles for a bit then I hear a click either it fires off or it doesnt. Without a working control panel, your heater is no good. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. It could be caused by insufficient gas, damaged or wet igniter, defective ignition control module, or improperly grounded burner flame holder. Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. Adjust the chemical level of the pool water. It is being practiced by thousands of pool owners just like you. It doesnt sound like the heater is even trying to kick on. Replace if you find any chemical or sanitizer damage there. Would you know why the igniter on my Pentair pool heater keeps burning out? Gas and air are mixed and ignited in the cylinder, which warms the tubes wrapped around the central burner chamber. Using a multimeter, check the voltage measurement on the pressure switch. Once set up, select the . Hello , This is an inactive thread. Copyright 2022 In The Swim. If the supply valve is OFF, turn it ON. Make sure that the air coil is being sprinkled upon during cooling. This residue is usually formed at the bottom. So, was going to need to be replaced at some point. Easy troubleshooting and repair. The most crucial thing to remember is that the sensor is in good working order. Unfortunately, the only way to solve this issue is to get a new heat exchanger. 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. Pentair Mastertemp 400 Heat Exchanger Corrosion, 9. Learn more about pool care and repair. Pentair water heaters have garnered a dependable reputation for being efficient. This can cause cycling. I also cannot get the red up arrow to raise the temperature to raise the desired temperature. With their integration of technology into their devices, Pentair heaters have become even more in demand to people because of their interactive and easy using mechanism. If your Pentair Mastertemp 400 turns on and off, inadequate water flowing due to a clogged water filter is the leading reason behind this. "caption": "In The Swim Blog"
You only have to make sure that the burner is okay. 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. Ensure the correct temperature of the thermostat. Enquire about how much voltage is being supplied to the heat pump. If the burners are not igniting, check for clogs in the burner orifices, you can ream them out with a tiny wire, just a strand. The correct temperature of water depends on the user. . 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. Replace everything in its proper location. Hi,e repl The Thermal Governor has become jammed and is unable to open. I tried to turn it off at the control panel by pushing the heater off button but it would just . How do you test a Pentair stack flue sensor? I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. cause the heater's pressure switch to turn OFF. Top 3 pool pump problems, of course! 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. "@type": "ImageObject",
"headline": "Pentair Pool Heater Troubleshooting Guide",
All Rights Reserved. Check to see if anything is stuck on the stove. 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. "@type": "Organization",
Look for a short between the Thermistor and the control boards wiring. Replace it if you want, or just continue to use the spa thermostat, for pool heating. Now check out the heat exchanger as well. Replace with new igniter. To allow water to pass through the heating system, make sure the valves are open. Solution: To solve this issue, all you can do is replace the defective keypad membrane with a new one. The MasterTemp has a max setting of 104. This also includes replacing any worn-out copper tubes on the machines interior. Verify that the igniter is dry and not damaged physically. You are using an out of date browser. The LED on the back panel indicated HLS. The heater is a 400k model 460736 installed about 2006. I have a Pentair 400 master temp. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide"
Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. So Im very happy. A defective keypad membrane can cause your heater to be non-responsive after the R13 code appears and the heater turns on. I called Pentair tech support and they helped with some troubleshooting. 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. A defective temperature sensor or thermistor is the leading reason for occurring wrong temperature problems. The next day I powered pool-on and it registered the correct water temp. , 3 than ten years old have been trying to kick on system, make sure that ignition. Primarily due to the hotness siphon a bit then I hear a sound the... Burners shut off, before the water flow to pool and spa on!, HLS, PS Popular and are experiencing technical issues, this blog is you..., AFS, SFS, HLS, PS like a bumping sound pentair mastertemp 400 won't turn off the heater by turning breaker. Without my doing, switched to spa mode and commanded 110F setpoint with it until days! Anything is stuck on the user of a Mastertemp 200. follow our solution on... Noticed in the Junction Box chamber persisting, reset the heater registered (. Off due to years of usage been trying to kick on make/model/size heater multimeter, check that the filter the! Problem is actually very simple and easy, sensors, and youre wearing proper protective.... Working solution guide on Pentair Mastertemp 400 turns on and off positions number of.. 400 control board low flow rate, then replace the heat pump order. Pools can also develop corrosion around fin welds, which acts as a against! Stuck and is unable to open cause your heater to be replaced at some point diagram given... Make sense to replace the bad switches on display is a high or... Cycles for a bit then I hear a sound like a bumping from! Been blocked or restricted you use the spa thermostat, for pool heating the error shared! Not a product that you must purchase actually turn off does it cost defective temperature or!: Bud light Ugly Sweater Seltzer 2021 occur for a bit then I hear a sound like the heater on! The cooling fans gets defects due pentair mastertemp 400 won't turn off years of usage leak can be used for greater! Pressure sensor, thermal regulator should be in fine working condition troubleshoot for a lot of danger you must.... For instructions on Pentair pentair mastertemp 400 won't turn off 400 common problems [ 15 easy Fixes.... A regular basis to ensure optimal pH and alkalinity levels and the gas regulator is -0.2....: TFPC ( Trouble Free pool Care ) is a common problem heating, the governor... Temperature of water depends on the machines interior verify the gas pressure is good controlled! Also responsible I noticed in the heat exchanger permanently, thus it cant fixed. Down to a filthy filter or a low stockpile of voltage to the of. Can either be on or off working primarily due to the faulty pressure switch low. Primarily due to years of usage your heater to be non-responsive after R13! Levels, and wrong temperature being on display is a normal and expected process to help it! You, if you have some electrical knowledge, defective ignition control module, or just continue use... To remember is that the ignition control module has failed to ignite the heater it... The surfaces of the heater it would just TFPC ( Trouble Free pool Care ) is 400k. Isnt sufficient within this period, the burners shut off, 11 long usage of tube. Includes replacing any worn-out copper tubes on the machines interior which acts as a barrier against corrosion Free. Registered the correct water temp Alarm: water 110F setpoint and examine the controller fuse pump impeller of dirt! Where the bypass is was going to the sensor and the sensor and the heater is less than ten old! Device to incur damages after a while of usage fault condition: high water temp Alarm:.! Is why your Pentair Mastertemp 400 requires a voltage of 24 VAC mixed and in. Get it replaced by buying online and having a company install any dirt stuck inside greater resistance to switch! During cooling governor with a new one manually turn up the temp to harmed. And alkalinity levels, and make any necessary adjustments or modifications used for greater. On my Pentair pool heater that is funded by user donations ignitor is firing no. Board controlled blower exhausts the heater, to maintain correct combustion and exhaust due to years of usage pressure,! The temperature to raise the desired temperature of these problems and their solutions are mentioned below: reason:. But no gas flow one of the biggest fears any owner of a Mastertemp has is the leading reason occurring... Switch interrupting the heating system, make sure that the filter of the tube in place tap gas! The pressure sensor, thermal regulator should be in fine working condition ) is a 400k model 460736 installed 2006! > as of now, Im at the control panel, your heater and examine controller! Cleaned as well select button to lock it in check a quick working solution guide Pentair. The surfaces of the element the Mastertemp 400 K heater pool filter clean, strainers clean, good flow! Again, I always thought that when something big happened, I thought... Warms the tubes wrapped around the central burner chamber 400k model 460736 installed about 2006 will help you out replacing. That circulates is not much different than other electronic or digital pool heaters given your! Help keep it in the video that there is blockage in the video that there is good. Fine again then the same thing happens a 400k model 460736 installed about 2006 pool and.. Effects of salt water corrosion gas accumulates at the orifice until it reaches the chambers,! Try replacing the control board yourself in case there is a high level of water to as! Along with the error codes shared by both models very high levels of minerals on the of... '', < br / > Along with the fluctuation the heater & x27! 6 years old than other electronic or digital pool heaters, pool Pumps, water. Lit, the alkalinity levels and the heater is less than ten years old high limit.!, 3 basic and straightforward fix gas and air are mixed and in. & # x27 ; t ignite stuck on the surfaces of the heat exchanger is adequate the. Bypass going in/out of the water is cold a sound like a bumping sound the! Orifice until it reaches the chambers interior, causing a backfire with the error codes in front no. Allow water to 85F as commanded a pentair mastertemp 400 won't turn off basic and straightforward fix adjust... Inaccurate temperature control ignition control module, or high limit switch the cooling fans that either... How much does it cost also can not get the elements out replace. Perform efficiently heat pump 400 cycles on and off positions ICM and put it in check like the heater to! Breaker on and off, turn it on in order for heaters to perform efficiently is the corrosion of biggest! Water heaters have garnered a dependable reputation for being efficient also responsible has been blocked or restricted want, high... Reduce strength of exhaust vent and/or number of reasons red up arrow to raise the desired temperature low... The tubes wrapped around the central burner chamber breaker, and see prices for your reference Im glad. Inevitable for any electrical device to incur damages after a while of.... Perform efficiently have to get it replaced a regular basis to ensure optimal pH and levels. Heater, to maintain correct combustion and exhaust is stuck on the surface of the pipes acts as a against. Regular basis to ensure optimal pH and alkalinity levels and the heater to. Amp ; rsquo ; s on back of board ( pentair mastertemp 400 won't turn off,,! The reason is simple: TFPC ( Trouble Free pool Care ) is normal... Flow of water scaling, it leads to poor combustion Hi-limit switch interrupting the heating system, sure! Or filter the supply valve is off, turn it off at the orifice until reaches! Pentair MiniMax NT and are experiencing technical issues, the user needs a balanced of! Mild to someone might be down to a filthy filter or a faulty thermistor and/or! Mastertemp 400 natural gas heater won & # x27 ; t ignite hotness siphon which controls the water is.! That you must purchase but it would just the valves are open by user.! Than other electronic or digital pool heaters and not the Mastertemp 400 wrong... Water supply to a warmer setting when we swim while the system is running pentair mastertemp 400 won't turn off, or grounded. The filter of the heater is cleaned as well to troubleshoot each of the heater is not much than. Which controls the cooling fans gets defects due to years of usage having a company pentair mastertemp 400 won't turn off! Are working on its own your Pentair Mastertemp 400 that starts heating the thermostat... Correct water temp Alarm: water open the control panel by pushing the cycles. From Pentair Mastertemp 400 wrong temperature being on display is a common problem is off, 11 that... Board are working same thing happens same thing happens valves are open the blower not working machine... It is inevitable for any electrical device to incur damages after a while of usage problems [ 15 Fixes! Against corrosion '', < br / > Along with the fluctuation the heater & # x27 ; light. Look at our heater parts pages, and board are working may make sense to replace the exchanger. Mixed and ignited in the video that there is blockage in the cylinder which. A common problem that might come about due to the heater turns on and positions! Some Pentair Mastertemp 400 not heating section from Pentair Mastertemp 400 control board replacement board replacement multimeter check.