pentair mastertemp 400 won't turn off

Verify pressure tap between gas valve and blower inlet. But the corrosion mainly occurs from the leakingof the interior parts of the heater, low water flow, open bypass valve, stuck closed of the thermal regulator, dirty filter, and imbalanced PH level on the pool water. Maintenance goes a long way when it comes to heater shelf life. The controls and circuit boards for the Max-E-Therm and the MasterTemp are fairly identical. I dont see my trouble addressed. 34. Make sure enough water flow by cleaning the filter. Pentair Mastertemp 400 Knocking Noise. I have a MasterTemp 200. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. "height": "219",
Im not sure where to even begin. Test your fill water too. Ensure that the pool filter is clean and clog-free. It was installed about 3 years ago and there haven't been any problems. 4. filter. You need to examine which part is malfunctioning. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. No, you cannot. Lower gas supply, blocked filter, defective gas valves, gas supply valves, or plumber valves are highly responsible for this. If it is not working, contact customer service to send you a new control board. Enquire about how much voltage is being supplied to the heat pump. So, was going to need to be replaced at some point. Let us know if you need help finding it. So you could save $1000 by buying online and having a company install. They said the 126 display was an error code. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. As an Amazon Associate I Earn From Qualifying Purchases. Check that the heater is getting sufficient gas supply and pressure to run. Turn off power to heater for about 5 seconds, and turn back on. How does the thermistor work on the pool heater? "headline": "Pentair Pool Heater Troubleshooting Guide",
Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. 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. Possible Cause: Gas supply valve. You can install a bypass valve to regulate the required flow rate. Save my name, email, and website in this browser for the next time I comment. This is the best possible solution to this problem. Replace the bad board. Heater will not start. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. The main function of the HLS on any pool heater is regulating the water temperature of the unit. Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. 6. "@type": "ImageObject",
If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Watching this video will give you more insight into how to clean up your Pentair heater filter efficiently. The voltage is supplied to the transformer should also be in the same range. "@type": "ImageObject",
Manage Settings Could the problem be with the flow or pressure sensors? Step 3: Two mounting screws hold the ICM in place. Leaking heat exchangers are often confused with sweating or condensating heat exchangers. "@context": "https://schema.org/",
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The 2nd is after modified the 3-port valve to the return lines. Fault Condition: HIGH WATER TEMP Alarm: Water . When the condenser coil on your heat pump gets unclean, it needs to work more to provide equal amounts of heating as normal. The PS is red, and led6 is red. 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? It doesnt sound like the heater is even trying to kick on. Replace the bad igniter and defective flame sensor from your heater. Otherwise, the igniter is bad and you need to replace it. The heater should be set at 104 and let the automation do the rest. Any assistance would be helpful or recommend a competent technician in the San Diego, CA area would be helpful. We can expect that whatever the issue will persist, you will easily fix it by following our guide. The Mastertemp 400 requires a voltage of 24 VAC. Safe operation is assured through a series of features . follow our solution guide on Pentair Mastertemp 400 not heating section from Pentair Mastertemp 400 Common Problems. If you are sure that the heater is getting power from the outlet, examine the fuse inside your heater. So I heed the advise although the flapper in the check valve still doesnt open completely, the heater started working again. If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. Installing a pool heater is not simple, but is done DIY all the time. Clean out the filter first to resolve the low water flow issue. When we turn the temperature down before the pool system shuts off for the night the next morning when the systems turns on the temperature is back up to the previous higher setting on its own. I just didnt trust them anymore. So, here we will look at some issues and their solutions. Replace the fuse if blown. You must log in or register to reply here. It has a big role in controlling the heater operation. To hear if the small relay on the board clicks while giving voltage to the blower, put your ear right next to the top of the heater. Ensure that the burner flame holder is grounded properly. Now, check out the voltage supply to the control board. Education Center. Pentair Mastertemp 250 turns on automatically. It is also advised to change the entire system if required. Do we have to adjust the temperature and then hit the select button to lock it in? The MasterTemp has a max setting of 104. Using a multimeter, check the voltage measurement on the pressure switch. See page 16 and verify the gas regulator is -0.2 wc. When the heater temperature exceeds the safety level, it activates and shut down 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. Since the voltages involved here are of a very high range, they have a greater potential for accidents. This problem can be resolved by servicing the pump or filter. The same is true for the StaRite Maxetherm heaters. Note: Turn off power to unit prior to attempting service or repair. The heater read more Assuming the voltage isn't ideal or the necessary level, the Mastertemp 400 won't turn on. The blower needs to be repaired or replaced in this situation. Simply unplug these and turn them off for the winter. Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! when temp is down it kicks on as soon as it goes over setpoint it shuts off. My MasterTemp 400 fails to work intermittently. Save money and energy with the MasterTemp High-Performance Heater. Verify that the igniter is dry and not damaged physically. Without gas, the heater won't operate. Pentair MasterTemp 400 error code E06 is displayed on your LED screen when the stack flue sensor has shorted. 7. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. Ensure that the control board is dry. Traveler, food lover, interior designer, and blogger. Adding MA is a normal and expected process to help keep it in check. Examine the area for any clogs or impediments. Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. I connected my old termistor and got a reading of 85 degrees. It was installed where one return line is completely open and the other one is only slightly open. 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? Thermal Governors are used to maneuvering the cooling fans that can either be on or off. I know I can buy for much less through you guys or elsewhere online. Hello, I have a Mastertemp 200. Remove the hard obstacle near the sensor. To fix your pool heater issue, check the gas valve removing the wire that runs between the thermostat & the gas valve. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Bought the house 2.5 years ago. Hi,e repl Gas and air are mixed and ignited in the cylinder, which warms the tubes wrapped around the central burner chamber. It does heat the spa about 1 degree every cycle. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. These problems could lead to build-up oflime scaleinside the copper tubes, which renders the heat exchanger useless and requires a replacement. A local pool service expert suspected the electronic control board may have gotten wet (we have had a good deal of rain here in northeast ohio recently) thus the odd error messages that I can not find in the owners manual. I sent the following on May 23, but received no reply/advice. 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. 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. Cant figure out why it keeps reverting back to a higher temp on its own when weve turned it down. They can cost you up to 50% of a new heater. To get rid of Pentair MasterTemp 400 code E05, first, check that the fuel supply is adequate and the gas pressure is good. Wiring it to a 2 wire remote interrupts the circuit for it to power up. "keywords": "",
Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Tech did everything but change the Regulator. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. Alternatively, the temperature display can sometimes be quite inaccurate. You may need to replace it. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. The Pool company said that it is probably condensation. Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. Some of these problems and their solutions are mentioned below: Reason 1: The flow of water to the heater has reduced. Any ideas on what the problem could be? Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. Clean up all the flue sensor orifices to ensure there is no grime on them. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Now, measure the voltage reading on the water pressure switch. This problem has a very basic and straightforward fix. Defective Keypad Membrane. Submit a Support Request. Work through the steps listed above and youll be cannonballing into your warm pool in no time. Did you replace both Hi Limit Switches? We have a Pentair pool heater that all the sudden kicked off Saturday. I do not see a procedure for not being able to use the OFF button. 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. "height": "219",
After about 15 seconds I hear a clicking noise then the heater light stays on for about 5 seconds, then starts blinking again. Ask your Questions or search from our database of answers: https://askthepoolguy.com/questions/ask/ Make sure you Subscribe so you get your answer! },
Enquire about how much voltage is being supplied to the heat pump. Thank you for your time and response. If the machine that circulates is not turned on, Damage to the switch which controls the water pressure. 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. A pool technician replaced 3 sensors however it still does not work. Pentair MasterTemp 400 wrong temperature being on display is a common problem. Be sure water flow is good (inspect internal bypass assy). 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. If flow is not the issue, yes it could be the hi-limit switch (but not the thermal cut-off, because it wouldnt come on at all). What's better thanTop 5 pool pump problems? If your pool heater blower is not working, be sure the blower is blocked by debris. We have a Pentair 300 for both spa and pool heating. Posted on Nov 23, 2010. Replace the defective parts. Sometimes users have the experience of a low heating problem, or the heater is totally out of its duty. 2. You can also check it by seeing if it opens up when you put it in water above 120 degrees. My heater also powers up, displays lights, without anyone touching it. I installed a Ta60d sand filter three weeks ago and it worked fine with it until two days ago. Please help. Broken safety switches, faulty transformers, and wrong temperature settings are also responsible. When the heater tries but fails to start, it recycles. All . Reason 3: Bypass Valve has remained opened. Rust or red spiders can clog these up. We have a Pentair minimax 100 Dsi. Then it came back on without my doing, switched to spa mode and commanded 110F setpoint. Replace the bad ones. Along with that, check the water flow to the heater. It should be damaged and crack-free for fluent water flowing. If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. 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. 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. Replace the bad switches. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. Any new postings here are unlikely to be seen or responded to by other members. The accuracy of the heater temperature display was increased as a result of this. The hi-limit switches are also on the front header of the minimax, and likewise, can be jumped-out by following the wires to where they connect, and using a jumper across the terminals. Make sure that the filter of the heater is cleaned as well. Repair or replace the pilot lit. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. They have a have an SF code for Sensor Failure. I also noticed that I couldnt completely open the valve on the return lines. Articles and resources for swimming pool owners and DIYers. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. This problem needs to be fixed ASAP. "identifier": ""
Carlos, those symptoms are HLS when it cools down, it turns back on. 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. Replace the defective thermistor. The consent submitted will only be used for data processing originating from this website. However, about 3 to 4 months ago it started turning itself on and heating the pool. When this happens, the front panel buttons will stop working. Gas accumulates at the orifice until it reaches the chambers interior, causing a backfire. Inside the front header, where the pipes come in and out, there is an automatic bypass device that could be broken and allowing too much water to bypass. There might also be damages to the suction air leaks. Reduce strength of exhaust vent and/or number of elbows. Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. People often confuse or term this leakage as sweating. 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. After persisting in this issue, you will hear a sound like a bumping sound from the heater. The correct temperature of water depends on the user. },
Beyond that, look thru this troubleshooting guide and consult your pool heater owners manual, as I cannot troubleshoot your heater from here. We are a registered 501(c)3 non-profit that is funded by user donations. Continue with Recommended Cookies. and follows into a 6 page flowchart to step by step troubleshoot a Pentair or Sta-Rite pool heater, and get it firing again fast! 1st one is the initial issue. The exhaust pipe is leaking water. Why is my Pentair pool heater not coming on? Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. All Rights Reserved. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. The heater itself will adjust up to 104 on either of the pool or spa settings. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. Acquire a 10k ohm resistor. Burner pulsates or surges, especially on ignition. "@type": "ImageObject",
Might charge under $500 to install. Before turning on, the heater contains a pressure switch and an internal bypass to ensure the right amount of incoming water flow. Water Flow Problem. Step 2: You then need to take apart the Max-E-Therm heater from the system. Thermal Governors stop working primarily due to years of usage. Solution: Take the bypass valve out for servicing. Set the temp higher than your pool water. First, check that the fuel supply is adequate and the gas pressure is good. The most commonplace for scaling to water is in water heaters, usually found in homes. "name": "Mark Garcia",
And if the heayer shuts off, the gas valve is ok. Then check the control board & fix it. Make sure all the valves are opened and in good working conditions. Ignition failure is one of the common problems that the users of Pentair Mastertemp face. Thanks for the help. All Right Reserved by HeaterFixLab. To allow water to pass through the heating system, make sure the valves are open. This means that the cleaner also won't impact the efficiency or operation of your filtration system. When I turn it on the blower comes on as well as the heater light starts blinking. Close the external bypass if open. This error code means that the stack flue sensor is open. I have replaced the Stack sensor thinking that it was the problem. Check for stuck objects, such as worms, dirt, lint traps, etc. The valve has to allow enough water into the heater, not too little, not too much. 35. I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? 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. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you now. You only have to make sure that the burner is okay. From our comprehensive article, you will get areliablePentair Mastertemp 400 troubleshooting guide that will assist you in fixing any issue effectively. It means that the ignition control module has failed to ignite the heater. I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. Look for a short between the Thermistor and the control boards wiring. No error codes in front and no led error indicator on the back panel as well. What else can impact the temp reading? in 1995. Product Registration. Adjust the chemical level of the pool water. When it used to work I would hear a big kaboom sound and now nothing. If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. Any help would be greatly appreciated. A tough, rustproof composite exterior handles the heat and weathers the elements. Hello. Clean the skimmer or the strainer basket of the pump. Hi Check the thermal regulator kit, to be sure that it is not bypassing too much water, or not bypassing enough. To reduce the number of minerals from the pool water surface, you will need to replace the heat exchanger with the new one. To Turn off Gas to Appliance. Pinhole leaks develop on the copper tubes that are on the interior of the machine. This is a common problem that might come about due to the failure of the part known as the thermal governor. Additional Resources. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). https://w. Heater will not turn off and a 5F code with a flashing 1. After about 30-45 seconds, the heating green light goes off and it shows service heater and the panel Not sure why a pool tech wouldn't replace the 2 wire remote . A defective temperature sensor or thermistor is the leading reason for occurring wrong temperature problems. 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. Replaced the thermistor probe, not the problem, not getting an error code, if I keep running, the heater ignites again and again turns off? Replace everything in its proper location. "name": "In The Swim",
Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. It calls for heat, heat starts for maybe 5-10 seconds, then stops, temp raises rapidly to 124 then slowly back down to 75 and cycles again doing the same thing over and over again. 13 years ago. This is accessed thru the end cap, two bolts on the side of the header. Wash them out very carefully with a hose. It does heat the spa about 1 degree every cycle. "width": "611",
Check out the power of the transformer whether its all good or not. Hi, I noticed in the video that there is an external bypass going in/out of the heater. You will need to reset your heater to get it out of the lockout. . Learn More. The heater does not ignite. In case there is blockage in the heat exchanger, how do I fix that? If your heater is creating a sound like shaking, cleaning the complete heater unit is a must. "
Unfortunately, the only way to solve this issue is to get a new heat exchanger. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. 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. 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. 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. Check out the thermal regulator as well. "image": {
A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. The service system light is on, and it has two red lights on, on the reverse side of the motherboard. The common problems that are related to heat exchangers will be explored in this section. I only found 1 small stone stuck inside where the bypass is. This residue is usually formed at the bottom. Trouble shooting a mastertemp that will not turn on when buttons are pressed. The breaker is tripped as a result of this. The automation system controls the heater and tells it when to turn on / off. It continuously bounces between pool and spa. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. First, power cycle the heater to erase all the unwanted factors. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. I have seen people are struggling with the DE pool filters. The sensor is operating if the resistance is 3.5 ohm or above. COPYRIGHT 2023. When I ask for heat, the service system and service heater lights briefly light up red then turn off. It 'rattles' 3 times, doesn't - Answered by a verified Pool and Spa Expert . The output of the transformer should be between 24 to 28 volts. The thermistor measures the water temperature and ensures a maximum level to prevent heater damage. 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. Here are the video links. Replace if there have any defects. You can clean your own pool filter easily. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. So the best possible solution in this regard is to acquire a new thermal governor. It could be plugged, or the bypass valves could be sticking. I run the heater and this time it did something different. 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. A second major problem with heat exchangers is scaling water conditions and poor combustion. We will do our best to help. Change your transformer if the supply is lower than the range mentioned. Once set up, select the . Combustion appears normal, but the flame does not stay lit. Eco-friendly, MasterTemp is certified for low NOx emissions and outperforms industry standards. 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.
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