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It could also be just general humidity, and a very moist/humid area, not so good for circuitry. service system & service heater lights are off heater set p read more Following this article, you can get solutions to some of these issues. cause the heater's pressure switch to turn OFF. The wiring diagram is given below for your reference. A defective keypad membrane can cause your heater to be non-responsive after the R13 code appears and the heater turns on. Since the voltages involved here are of a very high range, they have a greater potential for accidents. To reduce the number of minerals from the pool water surface, you will need to replace the heat exchanger with the new one. Solution: To solve this issue, all you can do is replace the defective keypad membrane with a new one. Other major reasons include: . February 9, 2023 by William. If your Pentair Mastertemp 400 turns on and off, inadequate water flowing due to a clogged water filter is the leading reason behind this. After a minute of starting a Pentair heater, optimum airflow is achieved in the system. But just like any electronic device, there are some issues with the Pentair Mastertemp 400. in 1995. People often confuse or term this leakage as sweating. Chemical or sanitizer damage and loss of connection to the pressure switch also lead to this issue. How does the thermistor work on the pool heater? 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. "primaryImageOfPage": {
When I fire up the heater on Pool it begins to heat but after about 5-10 minutes it moves over to Spa Heat (which I dont have a spa) and shuts down the heater. Other reasons why the heater is not turning on include: Faulty igniter So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. Looking like might be bad control board? Worked for 1 weekend, now won't fire up. Now, we make a living selling to DIY people, who like to save money. The heater read more I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? 4. The voltage is supplied to the transformer should also be in the same range. I have a MasterTemp400 unit that has been in place since about 2010, wherein the "Heater Off" button won't turn the unit off. Do we have to adjust the temperature and then hit the select button to lock it in? Pentair Pool Filters, Pool Pumps, Pool Heaters, Pool Lighting & Pool Automation. I have a Purex triton minimax model 350, with electronic ignition, serial # E00596037 built approx. Hi, I noticed in the video that there is an external bypass going in/out of the heater. "caption": "In The Swim Blog"
Reduce strength of exhaust vent and/or number of elbows. When the amount of scaling is very low, it might often be beneficial. Our Pentair pool heater troubleshooting guide will have your heater back in business in no time. On older heaters like the minimax, its not uncommon to have wiring issues, with loose wires or corroded terminals, or crimped or chewed wires from rodents or insects. 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]. Did you replace both Hi Limit Switches? So, here we will look at some issues and their solutions. This problem can be resolved by servicing the pump or filter. 1st one is the initial issue. "name": "Mark Garcia",
Measure the voltage of the heater transformer. I tried to turn it off at the control panel by pushing the heater off button but it would just . Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. You are using an out of date browser. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. Your email address will not be published. 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. COPYRIGHT 2023. I have replaced the Stack sensor thinking that it was the problem. 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. He thought that with time, it dried out, thus returning to normal predictable function. It does heat the spa about 1 degree every cycle. It continuously bounces between pool and spa. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. Replace if there have any defects. A tough, rustproof composite exterior handles the heat and weathers the elements. Dont ignore the strainer basket near the pump. Clean the water filter and pump basket to eliminate the water flow. All Rights Reserved. The MasterTemp has a max setting of 104. It could be plugged, or the bypass valves could be sticking. Any new postings here are unlikely to be seen or responded to by other members. Heater will not start. Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. Then i see a R9 code. 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. Save my name, email, and website in this browser for the next time I comment. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. All . 2. The PS is red, and led6 is red. Now check out the heat exchanger as well. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. ET Monday through Friday, or online at www.pentair.com and click on Products, then Pool . Once set up, select the . },
You may need to replace it. The service system light is on, and it has two red lights on, on the reverse side of the motherboard. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. Burner pulsates or surges, especially on ignition. The Mastertemp 400 requires a voltage of 24 VAC. I only found 1 small stone stuck inside where the bypass is. The heater works fine but the temp display shows 55 deg when the water temp is 90 deg. Im so glad I didnt have to buy additional parts. 35. Would this be caused by too high of a gas/air mixture? . Test your fill water too. Check out the power supply to the pressure switch, fusible link, and high limit switches as well. "identifier": ""
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I have a Pentair 400 mastertemp propane spa heater. It cycles for a bit then I hear a click either it fires off or it doesnt. If you deem it necessary, then clean the entire filter system. Not sure why a pool tech wouldn't replace the 2 wire remote . When it used to work I would hear a big kaboom sound and now nothing. "@type": "Person",
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. You need to examine which part is malfunctioning. Additional Resources. SFS is stack flue sensor. It does this over and over . 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. There might also be damages to the suction air leaks. 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. Here are the video links. Im not sure where to even begin. But, is there a way that I can validate that there is really an issue? If the thermistor tests are bad or faulty, replace them with a new one. I dont see my trouble addressed. Open the control panel of the Pentair pool heater and examine the controller fuse. 38. Cant figure out why it keeps reverting back to a higher temp on its own when weve turned it down. Could the problem be with the flow or pressure sensors? You will need a screwdriver for this. Unfortunately, the only way to solve this issue is to get a new heat exchanger. Close the external bypass if open. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter. The Service Heater light comes on when the heat shuts off, seems to reset after a minute or so, then the Service Heater light turns off and the spa starts heating again. Inaccurate Temperature Control or Display. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. (Be sure that it is leaking and not just condensating). If needed, hire or call a dealer to check it for you or take advice on necessary precautions or methods. 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. We have a new Pentair Mastertemp 400. when temp is down it kicks on as soon as it goes over setpoint it shuts off. Thank you Frank It is old and a bit rusty and loud. The optimum level of the voltage supply is between 208 to 260 volts. Any help would be greatly appreciated. . We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. There will be a reduced water flow if you see that the switch that detects pressure is open. Note: Turn off power to unit prior to attempting service or repair. It may not display this or other websites correctly. The sensor is operating if the resistance is 3.5 ohm or above. 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. Its a fun combination of plumbing, wiring and gas. All Right Reserved by HeaterFixLab. },
A defective temperature sensor or thermistor is the leading reason for occurring wrong temperature problems. What's better thanTop 5 pool pump problems? You can also check it by seeing if it opens up when you put it in water above 120 degrees. Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! Wiring it to a 2 wire remote interrupts the circuit for it to power up. Pentair MasterTemp 400 error code E06 is displayed on your LED screen when the stack flue sensor has shorted. I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. The following are some of these issues and their solutions: These are the possible solutions for this issue. If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. Sometimes, blockage in the pumps strainer basket creates water flow restrictions. Pentair Mastertemp 400 Heat Exchanger Corrosion, 9. "dateModified": "1/8/2019",
Work through the steps listed above and youll be cannonballing into your warm pool in no time. What else can impact the temp reading? When I hold it, the temp slowly went up to 90. In some cases, the water can become too hot or too cold. 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. Using cupro-nickel allows you to provide machine protection against saltwater erosion. Ensure that the pool filter is clean and clog-free. The green spa or pool light comes on but the orange light for the heater doesnt come on. This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. The possibility of water chemistry issues like calcium buildup in the heat exchanger, low water flow, and faulty pressure switch can create strange sounds in your heater.To solve this sound issue, check through the below solutions. "address": "",
Find a Dealer. If you have a Pentair MiniMax NT and are experiencing technical issues, this blog is for you. 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. Finally, set the thermostat temperature correctly. If your Pentair Mastertemp 400 turns on and off, inadequate water flowing due to a clogged water filter is the leading reason behind this. },
Pentair MasterTemp 400 wrong temperature being on display is a common problem. Do this test with the water still running. For that, clean out the water filter first. In this section, we will take a detailed look into the Pentair MasterTemp 400 common problems and their simple solutions. 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. It fires up fine again then the same thing happens. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. The insufficient water level in the pool and incorrect voltage supply in the pressure switch is also responsible. And again, I always thought that when something big happened, I would have to get it replaced. Mastertemp 250 Won't Turn On. Make sure to maintain the device properly. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] March 26, 2022 by David. Check for stuck objects, such as worms, dirt, lint traps, etc. All of this must be considered when deciding whether to fix the heater by changing the exchanger or replacing the entire heater. Salt cells tend to push a pool's pH higher. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Use a heat exchanger made of cupro-nickel to resist corrosion. No code is present. Note: when the opened the manifold last winter to replace the bypass, the manifold and the heat coils have no signs of scales. It can even be dangerous. Combustion appears normal, but the flame does not stay lit. Clean the clogged water filter to ensure a fluent water flow. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. Otherwise, it will be difficult to verify. The temperature should always be higher than the pool heater. The control board is the culprit when there is no click. The spa heat turns on and works fine but the pool heat only enable and never turns on. They have a have an SF code for Sensor Failure. Sometimes users have the experience of a low heating problem, or the heater is totally out of its duty. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. I only own a pool. Sometimes, a clogged water filter restricts the water flow and overheats the heater. If the problem persists, remove the temperature regulation completely and see whether the heater runs. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. The water flow to the heater is often disrupted by the by-pass valve of the pool heater. I shouldve tried harder to learn how the pool works. 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. "caption": "In The Swim Blog"
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. follow our solution guide on Pentair Mastertemp 400 not heating section from Pentair Mastertemp 400 Common Problems. 7. Check out the thermal regulator as well. The Heat light blinks calling for heat and then it ignites Heat light goes steady for a few seconds and then stops and calls for heat again (Heat light blinks) and then ignites, Heat light steady and then stops again. "url": "https://intheswim.com/",
Be sure all connections are clean and tight. Have a BRAND new Pentair Mastertemp 400. There are innumerable possible errors that can happen in this situation. Heater will not turn off and a 5F code with a flashing 1. Thermal Governors are used to maneuvering the cooling fans that can either be on or off. Now, measure the voltage reading on the water pressure switch. It worked well as usual, heated water to 85F as commanded. you won't get any ignition in your heater. But now, if you have any questions, leave a comment below. Clean up all the flue sensor orifices to ensure there is no grime on them. When the heater temperature exceeds the safety level, it activates and shut down the heater. "author": {
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. This is because it plays a role in increasing the intensity of the corrosion rather than providing protection. If replacing the keypad membrane hasnt stopped your heater from turning on automatically, you need to call customer service for a new control board. Unscrew them to take the ICM off the heater. 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. 39. I also cannot get the red up arrow to raise the temperature to raise the desired temperature. Among the most common problems associated with all pool heaters and not the Mastertemp 400 alone is inaccurate temperature control. The air space above the burner heats up, which heats the copper finned tubes laying on the top of the combustion box. Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. Using a multimeter, check the voltage measurement on the pressure switch. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. Call Us Nationwide: 1-800-741-9956. . When this happens, the front panel buttons will stop working. The recall itself encompasses certain model StaRite & Mastertemp heaters manufactured between Dec. 22, 2020, and Jan. 6, 2021. Take a closer look at where the water originates. An HVAC company would install it as well, or an Appliance company. If so where is it located and how much does it cost. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. This residue is usually formed at the bottom. The Mastertemp 400 requires a voltage of 24 VAC. So you could save $1000 by buying online and having a company install. 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. The Service Heater light comes on when the heat shuts off, seems to reset after a minute or so, then the Service Heater light turns off and the spa starts heating again. Education Center. Normally you can smell a little gas when it kicks on but it does nothing. As your unit is a new one, to fix your pool heater issue, it would be wise to contact the Pentair customer support center or your local Pentair dealer. This error code means that the stack flue sensor is open. Solution: Alter the chemistry of the water and reach an equilibrium. Test the resistance of the pressure switch. So Im very happy. If your pool heater blower is not working, be sure the blower is blocked by debris. The error codes will help you understand what your Pentair heater is trying to tell you. . As of now, Im at the mercy of my pool company? The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. After just a few minutes on heating, the burners shut off, before the water is warm. Also, closed valve, fluctuating in power . 34. Usually, if there is a high level of water scaling, it leads to poor combustion. 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. spa light is on. "@type": "ImageObject",
Thank you for your time and response. This is accessed thru the end cap, two bolts on the side of the header. First, locate the thermistor of your pool heater. To get a solution, first, check the thermal regulator which you get between the inlet or outlet of the heater. COPYRIGHT 2023. 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. Troubleshooting. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. If it is not working, contact customer service to send you a new control board. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you 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? Save money and energy with the MasterTemp High-Performance Heater. You could also take the heat exchanger for servicing. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. If the thermistor is in good condition, then replace the circuit board. Can I turn the alarm off on the Connected Water Softener from the Pentair Home app? Clean the skimmer or the strainer basket of the pump. 4. Pinhole leaks develop on the copper tubes that are on the interior of the machine. Check through it. So, was going to need to be replaced at some point. You can clean your own pool filter easily. Call Us. Change the waters chemicals to achieve equilibrium. The leak can be verified by you, if you lift the lid and inspect inside. 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. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. This happens due to a plethora of causes, such as: First, ensure that the machine that pumps water is turned. Make sure enough water flow by cleaning the filter. https://w. It worked well for the last 3 days. The LED on the back panel indicated HLS. Acquire a 10k ohm resistor. The solution to your heater issue is given in your previous comment. Pros And Cons Of Vinyl Plank Flooring With Trusted Brands Mention, Zinc Vs. Copper Roof Strips: Key Features With Pros And Cons of Each. 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. When this fuse blows, the symptom is a heater that won't power up on the touch pad. Kindly help. Glitches in the power supply are the root reason behind this. They said the 126 display was an error code. Thermal Governors stop working primarily due to years of usage. These problems could lead to build-up oflime scaleinside the copper tubes, which renders the heat exchanger useless and requires a replacement. Replace the defective thermistor. The thermal regulator should be in fine working condition. It should be damaged and crack-free for fluent water flowing. Could the problem be the regulator? Turn off the Pentair heater; .
Without a working control panel, your heater is no good. Turn on the resistance testing mode on a multimeter. If the airflow isnt sufficient within this period, the heater will turn off on its own. Problems and Corrective Action. Hello, I have a Mastertemp 200. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion.
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