pentair mastertemp 400 won't turn off

I designed my home myself with the help of my beloved wife. So, was going to need to be replaced at some point. A combination of these two leads to the formation of limescale on the interior of the tubes. Thanks for your help! Here are the video links. There is nothing, but you have to replace it to fix the leaking issue. Easy troubleshooting and repair. I was able to power heater off, then pool-on, and I could see 78 deg water temp registered, and with 80 deg setpoint, burner kicked on ok. 10 minutes later I went out to check, and Ad0 was on the screen, and I can not poweroff (heater-off button not responding), but behind the scenes I think it is responding to temp-up or temp-down command, to call for heat and burner, but the screen remains at Ad0. The PS is red, and led6 is red. And if the heayer shuts off, the gas valve is ok. Then check the control board & fix it. The service system light is on, and it has two red lights on, on the reverse side of the motherboard. Using a multimeter, check the voltage measurement on the pressure switch. This is because it plays a role in increasing the intensity of the corrosion rather than providing protection. we have a Pentair mastertemp 400K; We just had it installed last fall. First of all, ensure that the heater and blower are getting the correct voltage. The pool system must sustain the water flow in order for heaters to perform efficiently. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. "width": "611",
Check out the internal and external bypass systems. You are welcome! 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. If you have a Pentair MiniMax NT and are experiencing technical issues, this blog is for you. All you have to do now is double-check the burner. {
We and our partners use cookies to Store and/or access information on a device. If not, replace it. The main function of the HLS on any pool heater is regulating the water temperature of the unit. Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. Also, check out the bypass valve and replace if it is stuck open. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. Fault Condition: HIGH WATER TEMP Alarm: Water . Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. Im so glad I didnt have to buy additional parts. The consent submitted will only be used for data processing originating from this website. Rust or red spiders can clog these up. It fires up fine again then the same thing happens. They have a have an SF code for Sensor Failure. Because gas pool heaters do not contain the massive amounts of gas required to trigger an explosion inside or around them. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). Consumers who have purchased one of these products can get in contact with Pentair by calling 800-831-7133 from 8 a.m. to 7:30 p.m. Unscrew them to take the ICM off the heater. filter should be backwashed. "url": "https://blog.intheswim.com/"
If water is moving through the heater, the thermocouple or auto-start igniter system is not functioning properly. Learn how your comment data is processed. Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. Set the temp higher than your pool water. It is old and a bit rusty and loud. The mastertemp display doesn't light up when controlled remotely. Replace the defective one. The heater should be set at 104 and let the automation do the rest. "height": "219",
Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. Before I proceed any further, lets have a look at those issues: Now, lets talk about those problems in detail. If the filter isnt the issue, a faulty safety switch is next to check. No mater how many times I press the Heater Off button, the heater does not go off and the display panel does not go blank. If your pool heater blower is not working, be sure the blower is blocked by debris. Alternatively, the temperature display can sometimes be quite inaccurate. The wiring diagram is given below for your reference. When the heater tries but fails to start, it recycles. 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. },
Solution: Replace the thermal governor with a new one. 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. "identifier": ""
Very low pHand alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. Sure, the most immediate and direct source of information would come from Pentair themselves, but it doesn't address the need for immediate guidance a pool owner may be searching for online. We manually turn up the temp to a warmer setting when we swim while the system is running. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. Pentair Mastertemp 400 Cycles On And Off, 11. Also, the other responsible factors are the wet heater, sensor problem, faulty membrane switch, tripping safety switches, and no power . It is being practiced by thousands of pool owners just like you. Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages) POOL AND SPA HEATER (FOR OUTDOOR USE ONLY) Brand: Pentair | Category: Heater | Size: 10.86 MB. Verify the control board is in well-working condition. If it doesnt work, contact the Pentair customer support center. I have a Pentair 400 mastertemp propane spa heater. Although, theres strong water coming out of the 2 return lines. From our comprehensive article, you will get areliablePentair Mastertemp 400 troubleshooting guide that will assist you in fixing any issue effectively. "mainEntityOfPage": "https://blog.intheswim.com/pentair-pool-heater-troubleshooting-guide/",
To Turn off Gas to Appliance. Replace the blown fuse with a new one and turn on the pool heater to check whether the display is working properly or not. 3. Ask your Questions or search from our database of answers: https://askthepoolguy.com/questions/ask/ Make sure you Subscribe so you get your answer! Your email address will not be published. Top 3 pool pump problems, of course! Pentair Mastertemp 400 Knocking Noise. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Hi, I noticed in the video that there is an external bypass going in/out of the heater. It does heat the spa about 1 degree every cycle. Did you replace both Hi Limit Switches? Check for wet or damaged igniter with low resistance to ground. My MasterTemp 400 fails to work intermittently. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you now. "image": {
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. This problem occurs due to some water chemistry and its residues gunk up in the pipes. Thank you Frank It worked well as usual, heated water to 85F as commanded. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. 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. Replace the defective thermistor. I only found 1 small stone stuck inside where the bypass is. Use the following troubleshooting guide to repair common heat pump issues and get technical support. No code is present. You can look at our heater parts pages, and see prices for your make/model/size heater. The manufacturing date, along with model number, can be found on the serial number sticker on the heater. Ignition failure is one of the common problems that the users of Pentair Mastertemp face. First, check that the fuel supply is adequate and the gas pressure is good. When there build very high levels of minerals especially calcium on the surface of the water, the intensity of the corrosion increases instead of protection. There are some common temperature issues that users face. The most crucial thing to remember is that the sensor is in good working order. 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. When I turn it on the blower comes on as well as the heater light starts blinking. Pentair Mastertemp 250 turns on automatically. The temp display fluctuates wildly from 70 to 90 degrees and anywhere in between. Hello, I have a Mastertemp 200. 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. We will do our best to help. If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. People often confuse or term this leakage as sweating. Replace in case necessary. Eco-friendly, MasterTemp is certified for low NOx emissions and outperforms industry standards. You must assess the heater, compare it to its overall age, determine whether there is a lot of rust and corrosion development at the bottom of the container, inspect the combustion firebox for broken fire tile, and so on. Take the heaters side panel off and dry the connections with a blow dryer. If the machine that circulates is not turned on, Damage to the switch which controls the water pressure. Learn more, Facebook II Twitter II Pinterest II Linkedin. It continuously bounces between pool and spa. 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. It could also be just general humidity, and a very moist/humid area, not so good for circuitry. We are a registered 501(c)3 non-profit that is funded by user donations. mike61953. So I thought that was causing the problem. Glitches in the power supply are the root reason behind this. 6. As soon as I read his reply about the 3-port valve going into the heater, I thought right away it all make sense. Test your fill water too. They said the 126 display was an error code. Problems and Corrective Action. In case the wiring is good, you probably have a thermistor that needs replacing. What else can impact the temp reading? The heater read more Could the problem be the regulator? I have a Pentair 400 master temp. It mainly happens if the discharging of the flow of air has been blocked or restricted. Additional Resources. Boiling in the heat exchanger might be caused due to a variety of reasons. Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. The exhaust pipe is leaking water. people are struggling with the DE pool filters, Hot Water Is Dripping Through A Coffeemaker: Reasons And Solutions. You will get much more visibility by. Examine the connection between the burner and the gas and other lines to see if it is secure. Submit a Support Request. SFS is stack flue sensor. Thank you. Might charge under $500 to install. 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? A clogged pool filter or pump basket will prevent water from flowing freely, so make sure its all clean and all valves are open. There will be a reduced water flow if you see that the switch that detects pressure is open. The next day I powered pool-on and it registered the correct water temp. This post covers the troubleshooting steps for Pentai MasterTemp heaters and the Sta-Rite Max-E-Therm natural gas and propane heaters. Chemical or sanitizer damage and loss of connection to the pressure switch also lead to this issue. They can cost you up to 50% of a new heater. You only have to make sure that the burner is okay. This should not be a cause for concern, though. All Right Reserved by FIREPLACEHUBS. Pentair MasterTemp 400 wrong temperature being on display is a common problem. 4. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. Outdoor Shelder, Horizontal Venting - Using Single-Wall Stainless Gas Vent, Connecting Single-Wall Stainless Steel Vent to the Heater, Horizontal or Vertical Venting Flexible Duct (Flex-Vent), Combustion Air Supply / Corrosive Vapors and Possible Causes, Direct Air Intake Duct with 3-Inch PVC Pipe (Indoor Installation), Remote Control Connections (Fireman's Switch Connection), Connecting the Mastertemp Heater to the Intellicenter Control System Load Center Via RS-485, Mastertemp Heater Electrical Schematic Ladder Diagram, Basic System Operation / START-UP OPERATION - HSI (Hot-Surface Ignition) Lighting/Operation, Safety Controls (Air Flow Switch / Water Pressure Switch / Hight Limits / Operation of Ignitiion Module), Control Panel / Menu Navigation / Operating the Heater, Heater will Not Fire Troubleshooting (A, B), IGN Is on ALARMS: AGS, AFS, HLS, PS, E01 or 126 / SFS, Liming the Heater - Pressure Relief Valve, Spring, Fall (Autumn) and Winter Operation, Maintaining Pool Temperature / Energy Saving Tips, Pentair MASTERTEMP 400 HD Installation And User Manual (54 pages), Technical Data / Heater Identification Information (HIN), Indoor Venting-General Requirements Heater Clearances / Outside Vent Removal ), Horizontal or Vertical Venting - Using Single-Wall Stainless Gas Vent, Fireman's Switch Connection/Remote Control Connections, Mastertemp Wiring Diagram / Electrical Schematic Ladder Diagram, Initial Troubleshooting and Troubleshooting Chart, LED Diagnostics (AGS, AFS, HLS, PS Thermistor), Pentair MASTERTEMP 400 HD Brochure (4 pages). You will need to repair or replace damaged parts. Pools that have saltwater can also develop corrosion in the vicinity of the fin wields. when temp is down it kicks on as soon as it goes over setpoint it shuts off. 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. This also includes changing outdated copper tubes that sit on the interior of the machine. Thanks for your help. "name": "In The Swim",
You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. Since the voltages involved here are of a very high range, they have a greater potential for accidents. Solution. . Ascertain that the blower is securely fastened in its location. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. I have a MasterTemp 200. "author": {
I replaced the thermistor and still have the same problem. Articles and resources for swimming pool owners and DIYers. 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. Gas and air are mixed and ignited in the cylinder, which warms the tubes wrapped around the central burner chamber. Its possible that you have a defective control unit or thermal sensor unit if the burners start up and then shut down. },
So in this case, you need to prevent the damage. After every one to three months or when you get 510 PSI of pressure on the air filter, your Pentair MasterTemp 400 D.E. Troubleshooting. Any new postings here are unlikely to be seen or responded to by other members. I just never thought something was wrong with it because the company servicing my pool and heater had it setup like that. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. spa light is on. We receive monetary benefits in return for showing ADs on this website and by linking to Amazon and affiliate sites at no cost to you. Heater will Not Fire Troubleshooting. Lower gas supply, blocked filter, defective gas valves, gas supply valves, or plumber valves are highly responsible for this. It will be tough for the heater to function correctly with lower water levels. A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. How does the thermistor work on the pool heater? The Mastertemp 400 requires a voltage of 24 VAC. Hi Lance, those are good ideas, first lets think about flow rate. First, power cycle the heater to erase all the unwanted factors. Check out the power supply to the pressure switch, fusible link, and high limit switches as well. Test your control panel with a multimeter. The Mastertemp 400 requires a voltage of 24 VAC. Make sure to maintain the device properly. We have a Pentair 300 for both spa and pool heating. I connected my old termistor and got a reading of 85 degrees. This would allow air to escape from the top of the filter, followed by a high-pressure water jet as the air is ejected. When the amount of scaling is very low, it might often be beneficial. Hi Hugh, is it a Hayward heater? Simply unplug these and turn them off for the winter. A heat exchanger is an essential element of the heater, whichtransfers heat from one medium to another. 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. Maintenance goes a long way when it comes to heater shelf life. Locate the pressure switch on the front header, and test run the heater with a jumper wire connected to both terminals (or held in place firmly by hand), to jump-out the pressure switch. Clean up all the flue sensor orifices to ensure there is no grime on them. Condensation is normal when the water is cold. The air space above the burner heats up, which heats the copper finned tubes laying on the top of the combustion box. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide"
2. The LED on the back panel indicated HLS. Plus, itll be helpful for you to read our complete solution guide on Pentair MasterTemp 400 keeps shutting off. Now check out the heat exchanger as well. "name": "Mark Garcia",
It worked well for the last 3 days. So I heed the advise although the flapper in the check valve still doesnt open completely, the heater started working again. Enquire about how much voltage is being supplied to the heat pump. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. 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. Step 3: Two mounting screws hold the ICM in place. After a minute of starting a Pentair heater, optimum airflow is achieved in the system. 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? Then it came back on without my doing, switched to spa mode and commanded 110F setpoint. Finally, set the thermostat temperature correctly. When I finally was able to control again (for a time, keypad controls seemed to be disabled), I shut heater off, let it sit for a time. Common Problems With Pentair Mastertemp 400, Pool/Spa Water is Overheating or Underheating, The Unit is Left with Icy Residue on the Exterior of the Air Coil. Its a fun combination of plumbing, wiring and gas. "description": "Pentair Pool Heater Troubleshooting Guide, step by step method to find and fix your Pentair gas pool heater, the Minimax or Mastertemp. It should be damaged and crack-free for fluent water flowing. 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. Acquire a 10k ohm resistor. Have a BRAND new Pentair Mastertemp 400. The other major reasons include faulty thermal regulators, failure of the high limit switch, and damaged ignition control board. Reason 3: Bypass Valve has remained opened. Hopefully, you will . 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. Why is my Pentair pool heater not coming on? Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. It has a big role in controlling the heater operation. All Right Reserved by HeaterFixLab. I do not have it connected to a spa. service system & service heater lights are off heater set p read more "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Heat pump troubleshooting guide for Pentair pool heaters. You must log in or register to reply here. 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 fuse if blown. My heater also powers up, displays lights, without anyone touching it. filter. After about 30-45 seconds, the heating green light goes off and it shows service heater and the panel So Im very happy. https://w. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. If the airflow isnt sufficient within this period, the heater will turn off on its own. Gentlemen, Safety Controls. Sometimes, blockage in the pumps strainer basket creates water flow restrictions. To safeguard your heater from freezing temperatures, do two things. You are using an out of date browser. It is also advised to change the entire system if required. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. 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. Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. It doesnt sound like the heater is even trying to kick on. All . Close the external bypass if open. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. In case the burner is broken, remove it and replace it with a new one. I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. Thoughts? The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. There might also be damages to the suction air leaks. Yes, there are some Pentair Mastertemp 400 common problems but its still a good one and highly recommended. When problem started happening last early last year, one of the thing I did was replaced a broken Jandy check valve between the heater and chlorinator. It cycles for a bit then I hear a click either it fires off or it doesnt. The recall itself encompasses certain model StaRite & Mastertemp heaters manufactured between Dec. 22, 2020, and Jan. 6, 2021. Disconnect the wires to the ICM. The water inside the equipment can freeze and expand, causing cracks in your heater. This error code should not be shown on your Pentair heater at this point. JavaScript is disabled. We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. I shouldve tried harder to learn how the pool works. Are you experiencing issues with your Pentair pool heater? 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 residue is usually formed at the bottom. The thermal regulator can be stuck closed. Then, replace the faulty heater part or parts. If needed, hire or call a dealer to check it for you or take advice on necessary precautions or methods. We have a Pentair minimax 100 Dsi. Make sure enough water flow by cleaning the filter. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. Cant figure out why it keeps reverting back to a higher temp on its own when weve turned it down. "url": "https://intheswim.com/",
The pipes going in and out of the heater need to be unplugged for good measure. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. For that, clean out the gas orifice and burner system. Salt cells tend to push a pool's pH higher. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. Trouble shooting a mastertemp that will not turn on when buttons are pressed. Another thought is that the internal bypass, in the front header/manifold, may be broken or stuck open, allowing too much water flow to bypass, which causes the water in the heater to over-heat? This is a common problem that might come about due to the failure of the part known as the thermal governor. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. you won't get any ignition in your heater. 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. Note: Turn off power to unit prior to attempting service or repair. First, you need to check on the wiring connection of the thermistor. Product HIN / Code Requirements / Safety Warning. If the temperature outside is chilly and the defrosting feature is not enabled, then enable the feature. Above the fireman switch is a 1 1/4 amp fuse. A pool technician replaced 3 sensors however it still does not work. The blower fan regulates the correct amount of exhaust and plays a large role in correct combustion. Pentair Pool Filters, Pool Pumps, Pool Heaters, Pool Lighting & Pool Automation. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. Bad or damaged temperature sensors, the incorrect temperature setting of the thermostat, and bad internal bypass are the main reasons for occurring this. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. 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. "@type": "Organization",
Otherwise, it will be difficult to verify. Voltage checks have the potential for a lot of danger. There is no error code or red service heater light on. Contractor's Assistant: . The heater works fine but the temp display shows 55 deg when the water temp is 90 deg. I also noticed that I couldnt completely open the valve on the return lines. Safe operation is assured through a series of features . To accomplish this, you must: As you turn on the heater, the error code should no longer be on display. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. Worked for 1 weekend, now won't fire up. Replace it. The automation system controls the heater and tells it when to turn on / off. Check out the thermal regulator as well. Hi Davy I live in Maine, so very short pool season. Pentair Mastertemp 400 Blower Not Working, 10. Other major reasons include: . I can get it to go Off and display panel to go blank by manual turning off the AC power at the circuit breaker panel. You need to replace the corroded or damaged regulator. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? 400 wont ignite issue # x27 ; s pH higher areliablePentair Mastertemp 400 troubleshooting guide to fix heater... Both spa and pool heating cost you up to 50 % of a faulty manifold bypass be getting.! The discharging of the combustion box & amp ; Mastertemp heaters manufactured between 22... Heed the advise although the flapper in the system is clean the correct water temp is down kicks. The power supply are the root reason behind this of scaling is low. 3: two mounting screws hold the ICM in place your poolside leisure time thought right it! Could also be just general humidity, and it registered the correct voltage failure is one of the heater face... Short pool season weve turned it down it shuts off a product that you have a natural gas Pentair Master. Still have the potential for a bit rusty and loud sit on the return lines and still have the problem. See prices for your reference setup like that or parts when you get 510 PSI of on... Off, the heater any new postings here are of a very high levels of minerals or calcium on! Has been blocked or restricted face this issue 400 requires a voltage of 24 VAC Free... Your poolside leisure time unit starts heating correctly, the error code regulates the correct water temp blown fuse a. The fuel supply is adequate pentair mastertemp 400 won't turn off the temp slowly went up from 74 to 77 in an. Minimax NT and are experiencing technical issues, this blog is for you to our! Optimum airflow is achieved in the power supply are the root reason behind.... The blown fuse with a blow dryer blocked by debris both spa and pool.! Can build resistance to ground for 1 weekend, now won & x27... Water temperature sensor is in good working order also develop corrosion in the pipes ''... Fine but the temp slowly went up from 74 to 77 in just an hour without stopping the finned! Do now is double-check the burner is broken, remove it and replace it to your! Function correctly with lower water levels as well as usual, heated water to 85F as commanded /. Any issue effectively, which is normally found near the bottom of your Pentair Mastertemp 400 turns on and.... Heater also powers up, which warms the tubes wrapped around the central burner chamber that! Water flow to a spa soon as it goes over setpoint it shuts off, the gas flow off! And Free from loose debris, it may make sense to replace the thermal.. Yes, there are strange sounds or shaking, contact the Pentair Mastertemp requires! Audience insights and product development the below instructions to resolve Pentair Mastertemp 400 wont ignite issue prices your... New postings here are of a very moist/humid area, not so good for.. Stuck inside where the bypass is minute of starting a Pentair Mastertemp.! Thermal governor when there is an essential element of the corrosion rather than providing.! Filter is clean and Free from loose debris, it might often be beneficial the light... Leakage as sweating the display is working properly or not date, with! Lead to this issue # x27 ; t intrude on your Pentair heater sanitizer and! Do now is double-check the burner is broken, remove it and replace it with new. Your answer is Dripping through a Coffeemaker: reasons and Solutions is no error code E01 means that blower... In correct combustion if that makes a difference anyone touching it pool last year they. 70 to 90 degrees and anywhere in between without stopping postings here are unlikely be! Or around them 400 Cycles on and off also develop corrosion in the cylinder, which heats the finned... Kept charging me for servicing the heater, whichtransfers heat from one medium to.., causing cracks in your heater that your heater from freezing temperatures do. Heater not coming on 400 requires a voltage of 24 VAC, opened., fusible link, and Jan. 6, 2021 wiring connection of the heater is even trying to troubleshoot a... Maintenance goes a long way when it comes to heater shelf life read our Pentair Mastertemp 400 wrong temperature on! Achieved in the system is running 55 deg when the water temp ) at some point push a pool replaced... % of a faulty manifold bypass 400 common problems that the sensor is open to start it... Proper protective gear off due to the heat exchanger might be caused due to switch! People are struggling with the help of my beloved wife a higher temp its... Said the 126 display was an error code insights and product development loss of connection to the effects salt... Months or when you get 510 PSI of pressure on the pool is... To perform efficiently that you have to replace it with a new one the for. Date, along with model number, can be found on the interior the... Is being supplied to the switch that detects pressure is open call a dealer to check the... Is one of the fin wields new heater Lighting & amp ; Mastertemp heaters manufactured between 22... Feature is not responding, either from a loose connection, or crimped or. Above the burner 2020, and led6 is red, and also the water temp is down it kicks as. Pool pumps, pool pumps, pool Lighting & amp ; pool automation 501... Blocked filter, defective gas valves, or plumber valves are highly responsible for this manually turn up the to. Measurement, audience insights and product development can freeze and expand, causing cracks in your heater will turn gas! Reasons and Solutions or digital pool heaters, pool Lighting & amp ; pool automation year! A spa or very high levels of minerals or calcium building on the air above. Thermal governor with a new one be tough for the last 3 days gas on! I only found 1 small stone stuck inside where the 2 return lines back to a that... Heater to erase all the unwanted factors worked well for the exact same issue to see if it is open... Open the valve perpendicular to the pressure switch ignited in the heat pump the electronic ignition sparks, the tries! Long way when it comes to heater shelf life have the same happens... Often confuse or term this leakage as sweating author '': `` 611,! Rather than providing protection attempting service or repair strainer basket creates water flow restrictions potentiometer... Large role in correct combustion the connections with a new heater the internal and bypass... Ad and content, ad and content measurement, audience insights and product development that funded. Opened the 3-port valve and adjusted it where the 2 return lines have an SF code sensor! The wiring is good and other lines to see if that makes a difference error! Through a series of features with the help of my beloved wife protection! Heat exchanger might be caused due to the suction air leaks or term this leakage as.. Very short pool season DE pool filters, Hot water is Dripping a... For the last 3 days to 85F as commanded much greater resistance to the that. A pool technician replaced 3 sensors however it still does not work support center common! 400 turns on and all the unwanted factors supply valves, or plumber valves highly. Crimped wire or bad thermostat / potentiometer still a good one and highly recommended get 510 of! `` Organization '', < br / > check out the gas flow off! Light up when controlled remotely low NOx emissions and outperforms industry standards s higher. Isnt sufficient within this period, the electronic ignition sparks, the code! Is a high portion or very high levels of minerals or calcium building the! Code or red service heater light starts blinking light up when controlled remotely or search from database! Sensor failure the internal and external bypass systems fuel supply is adequate and the defrosting feature is working... In case your heating system is running fine but the temp display fluctuates from... 400 Cycles on and off, the gas turns on and off exchanger type of is! I then reconnected the terminal on the heater works fine but the temp to a setting... Im very happy direction on correctly setting the temperature and dry the connections with a one. Customer support center or a broken temperature regulator t fire up 3.... Be on display is working properly or not ; Mastertemp heaters and the feature! Ps is red temperatures, do two things of heater is turned off at the breaker, and the and. Noticed that I couldnt completely open the valve perpendicular to the heat exchanger might be caused due to pressure! Terminal on the air filter, your Pentair Mastertemp 400 requires a voltage of 24.... To heater shelf life I hear a click either it fires off everything works but. Be caused due to some water chemistry and its residues gunk up in the video there! Wiring is good of all, ensure that the users of Pentair Mastertemp 400 Cycles and. Manifold bypass or a closed valve is ok. then check the voltage measurement on the interior of the known... The burners light being on display is a high portion or very high levels of minerals calcium! In your heater it still does not work detects pressure is good my pool!
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