pentair mastertemp 400 won't turn off

But heat exchangers are expensive. 4. people are struggling with the DE pool filters, Hot Water Is Dripping Through A Coffeemaker: Reasons And Solutions. In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? 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. Use this resistor to test the thermistor. These Pentair MasterTemp 400 Problems relating to temperature are explored below. You may safeguard your equipment from seawater erosion by using cupro-nickel. When the condenser coil on your heat pump gets unclean, it needs to work more to provide equal amounts of heating as normal. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. You will need a screwdriver for this. Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. The following are some of these issues and their solutions: These are the possible solutions for this issue. Safety Controls. The heater read more Are you experiencing issues with your Pentair pool heater? Reason 4: Thermal Governor has got stuck and is not opening. Hi Check the thermal regulator kit, to be sure that it is not bypassing too much water, or not bypassing enough. The same is true for the StaRite Maxetherm heaters. An explosion requires a large amount of natural gas or propane to build up in one region. Be sure all connections are clean and tight. All you have to do now is double-check the burner. Here are the video links. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. A pool technician replaced 3 sensors however it still does not work. I have tried running it with the pump going full boogie to see if it is water flow problem and the service heater light still comes on. You must log in or register to reply here. One of the biggest fears any owner of a Mastertemp has is the corrosion of the heat exchanger. They will help you out with replacing your control board. After just a few minutes on heating, the burners shut off, before the water is warm. Solution: Take the bypass valve out for servicing. },
The keypad membrane on your heater should be replaced to solve this issue. Pentair MasterTemp 400 wrong temperature being on display is a common problem. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. Ensure that the pool filter is clean and clog-free. When this fuse blows, the symptom is a heater that won't power up on the touch pad. The flame ignitor is firing but no gas flow. Doing this will drain the heater of any water, ensuring that no part of it has enough water to freeze and expand, causing harm. By using a voltmeter, measure the voltage of the high limit switch and pressure switch. So the best possible solution in this regard is to acquire a new thermal governor. See page 16 and verify the gas regulator is -0.2 wc. "@context": "https://schema.org/",
Without gas, the heater won't operate. Test the resistance of the pressure switch. Thanks for your help. Check through it. Sometimes the heat exchangers leak. Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. There might also be damages to the suction air leaks. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. Even the new MasterTemp above ground pool heater has the same design, and the same troubleshooting procedure. so does the heater actually turn off when you use the automation to turn it off? You can install a bypass valve to regulate the required flow rate. After long usage of the thermal governor stops working permanently, thus it cant be fixed by any means. 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. If you agree, which device is the most likely to fail and how does one test it. You can try replacing the control board yourself in case you have some electrical knowledge. 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. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? Hello. I replaced the thermistor and still have the same problem. Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. If no ignition, I turn off, wait, then re ask for heater. I had to turn off . For that, clean out the water filter first. Ensure enough gas supply on the heater. Pentair water heaters have garnered a dependable reputation for being efficient. Heater is Pentair Mastertemp 200, installed May2017. It worked well as usual, heated water to 85F as commanded. Ask your Questions or search from our database of answers: https://askthepoolguy.com/questions/ask/ Make sure you Subscribe so you get your answer! After a minute of starting a Pentair heater, optimum airflow is achieved in the system. Replace the bad switches. Since the voltages involved here are of a very high range, they have a greater potential for accidents. When I turn it on the blower comes on as well as the heater light starts blinking. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? You will get much more visibility by. Have a pentair minimax heater, spa heater turns on for a few seconds then goes off, fan is on, blower is on, when heater fires I do smell gas and the air is hot. Could the problem be with the flow or pressure sensors? Any new postings here are unlikely to be seen or responded to by other members. So I thought that was causing the problem. This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. If the supply valve is OFF, turn it ON. Cleaning your heat pump on a regular basis will help you avoid this problem. The Mastertemp 400 requires a voltage of 24 VAC. Also, the other responsible factors are the wet heater, sensor problem, faulty membrane switch, tripping safety switches, and no power . Cant figure out why it keeps reverting back to a higher temp on its own when weve turned it down. Heater will not turn off and a 5F code with a flashing 1. If the airflow isnt sufficient within this period, the heater will turn off on its own. "identifier": ""
It may not display this or other websites correctly. It fires up fine, but about 15 minutes into heating the service heater light comes on and I am unable to turn it off with the power button and I have to unplug it to reset it. Using cupro-nickel allows you to provide machine protection against saltwater erosion. Check for stuck objects, such as worms, dirt, lint traps, etc. Table of Contents. Clean the clogged water filter to ensure a fluent water flow. Operating Control Panel. Tech did everything but change the Regulator. Fortunately, you simply need to remove and clean the filter and make sure all the valves are open. The thermal regulator should be in fine working condition. Replace the blown fuse with a new one and turn on the pool heater to check whether the display is working properly or not. 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. So, was going to need to be replaced at some point. The pool heater is about 4.5 years old. The pipes going in and out of the heater need to be unplugged for good measure. What can cause your Pentair MasterTemp 400 blower not working is a bad blower motor or a defective control board. To troubleshoot each of the above issues, the user needs a quick working solution guide. This error code means that the stack flue sensor is open. $4100 is not cheap. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you now. "caption": "In The Swim Blog"
The pool system must sustain the water flow in order for heaters to perform efficiently. It fires up fine again then the same thing happens. For a better experience, please enable JavaScript in your browser before proceeding. service system & service heater lights are off heater set p read more First, check the condition of the temperature sensor whether its good or not. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. Enquire about how much voltage is being supplied to the heat pump. First, locate the thermistor of your pool heater. "
This problem needs to be fixed ASAP. Following this article, you can get solutions to some of these issues. I just didnt trust them anymore. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. Search. Thats acting like a bad circuit board, but it would need testing to be certain, could also be moisture behind the display panel, near the circuit board. Look for a short between the Thermistor and the control boards wiring. To accomplish this, you must: As you turn on the heater, the error code should no longer be on display. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Any suggestions? if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fireplacehubs_com-large-mobile-banner-1','ezslot_4',113,'0','0'])};__ez_fad_position('div-gpt-ad-fireplacehubs_com-large-mobile-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fireplacehubs_com-large-mobile-banner-1','ezslot_5',113,'0','1'])};__ez_fad_position('div-gpt-ad-fireplacehubs_com-large-mobile-banner-1-0_1');.large-mobile-banner-1-multi-113{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. Thank you! This also includes changing outdated copper tubes that sit on the interior of the machine. The other major reasons include faulty thermal regulators, failure of the high limit switch, and damaged ignition control board. He thought that with time, it dried out, thus returning to normal predictable function. 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. Check your igniter module. It continuously bounces between pool and spa. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). Call Us. Other major reasons include: . Clean up all the flue sensor orifices to ensure there is no grime on them. It does heat the spa about 1 degree every cycle. It is old and a bit rusty and loud. The automation system controls the heater and tells it when to turn on / off. Hi,e repl Gentlemen, Pentair MasterTemp 400 Common Problems [15 Easy Fixes] March 26, 2022 by David. If it does, you may have received a defective regulator in need of a replacement. ******************************************************** The exhaust pipe is leaking water. If the temperature outside is chilly and the defrosting feature is not enabled, then enable the feature. SFS is stack flue sensor. For the heater to turn on and generate heat, all the safety switches have to be in the on position. Is this normal? 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. The heater should be set at 104 and let the automation do the rest. Clean the water filter properly to prevent water flow restrictions. 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. Measure the voltage of the heater transformer. Clean up all the flue sensor orifices to ensure there is no grime on them. Replace the defective heat exchanger if needed. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. If it stays running at the low thermostat setting, then let it run and if it never shuts off, until the pool is getting too warm then shut off, and turn on/off manually for a few days, until you can get a new thermostat. Easy troubleshooting and repair. Replace all the defective ones. First of all, ensure that the heater and blower are getting the correct voltage. Education Center. In case you have any queries regarding your Pentair MasterTemp 400, leave us a comment. They said the 126 display was an error code. Note: Turn off power to unit prior to attempting service or repair. Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. Posted on Nov 23, 2010. To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. Thank you. I have a MasterTemp 200. If so where is it located and how much does it cost. Email Us. 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. Check for any blockage of the burners, by something fallen on the burners, and up top, be sure the heater exhausts properly, no obstructions in the venting (birds nests, leaves, soot). Take a closer look at where the water originates. Theburner system of the MasterTemp/Max-e-Therm heaters is called the flame holder. You need to see the actual temp on the heater. They usually cannot be fixed. Bought the house 2.5 years ago. 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? 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. After persisting in this issue, you will hear a sound like a bumping sound from the heater. The blower fan regulates the correct amount of exhaust and plays a large role in correct combustion. With nearly 10 million pool pumps operating in, In our second in a series of pool parts pictorials, this time we take a high-res look at parts for gas pool, WhenHayward multiport valves start to age different problems can arise, some are just annoying and some are actually detrimental to the filter, Pentair Pool Heater Troubleshooting Guide, Must Have Accessories for Above Ground Pools, http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf. The heater works fine but the temp display shows 55 deg when the water temp is 90 deg. Before turning on, the heater contains a pressure switch and an internal bypass to ensure the right amount of incoming water flow. 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). Test your control panel with a multimeter. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. Replace the bad igniter and defective flame sensor from your heater. "url": "https://intheswim.com/",
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Voltage checks have the potential for a lot of danger. A second major problem with heat exchangers is scaling water conditions and poor combustion. I just never thought something was wrong with it because the company servicing my pool and heater had it setup like that. Pentair Mastertemp 400 Cycles On And Off, 11. Again, if it is displaying a lower temperature, the heater may keep heating even if the water is hot enough. Solution: Servicing on the pump or on the filter will fix this issue. The temperature should always be higher than the pool heater. Verify that the gas valve, supply valve, and plumber valve are totally opened. I also cannot get the red up arrow to raise the temperature to raise the desired temperature. When were done swimming we turn the temp down to a lower setting while the system is running before the system automatically shuts off for the night. Clean the skimmer or the strainer basket of the pump. Would you know why the igniter on my Pentair pool heater keeps burning out? Contact customer service and tell them about the issue. "height": "219",
It should be damaged and crack-free for fluent water flowing. This could lead to leakage. There will be a reduced water flow if you see that the switch that detects pressure is open. Replace the fuse if blown. You are using an out of date browser. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. The Pentair Mastertemp 400 is a heater that is used to warm water in swimming pools, as well as in spas. James from TFP noticed something wrong with the 3-way valve into the my heater. Edit. 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? Condensation is normal when the water is cold. Replace the defective one. "author": {
If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. It will be tough for the heater to function correctly with lower water levels. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. But, is there a way that I can validate that there is really an issue? Call Us Nationwide: 1-800-741-9956. . I also noticed that I couldnt completely open the valve on the return lines. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. The Thermal Governor has become jammed and is unable to open. The 2nd is after modified the 3-port valve to the return lines. "@type": "ImageObject",
The heater is only 3 yr old, just seems the erratic behavior is electrical/electronic in nature. In case the issue persists, replace the control board. 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. If still your heater doesnt go off, the gas valve is defective & you need to replace it. Also, at least once a year, you should disassemble and clean the D.E. February 9, 2023 by William. A sparking igniter is in good working condition. If the automatic gas shutoff switch has tripped, you need to reset it. Product HIN / Code Requirements / Safety Warning. 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. There are four of them. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Check the pumps strainer basket if the filter has been cleaned and the PSI is not high. Your Pentair MasterTemp 400 wont stay lit? Also could possibly have circuit board problems. This can cause cycling. If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. An HVAC company would install it as well, or an Appliance company. Replace if you find any chemical or sanitizer damage there. "address": "",
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I have a Purex triton minimax model 350, with electronic ignition, serial # E00596037 built approx. We will do our best to help. Also, closed valve, fluctuating in power . Acquire a 10k ohm resistor. I have a pentagram minimal plus heater and when I turn it on it stays on at low thermostat setting but when I try and increase it the heater kicks off and then wont come back on. 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. The thermister, sensors, and Board are working. Remove the hard obstacle near the sensor. filter should be backwashed. As soon as I read his reply about the 3-port valve going into the heater, I thought right away it all make sense. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. The blower needs to be repaired or replaced in this situation. Reason 3: Bypass Valve has remained opened. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. 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. To get a solution, first, check the thermal regulator which you get between the inlet or outlet of the heater. JavaScript is disabled. Take the heaters side panel off and dry the connections with a blow dryer. We have a new Pentair Mastertemp 400. Some of these problems and their solutions are mentioned below: Reason 1: The flow of water to the heater has reduced. Have a BRAND new Pentair Mastertemp 400. All Right Reserved by HeaterFixLab. Do any diagnostic LED’s on back of board (AGS, AFS, SFS, HLS, PS . COPYRIGHT 2023. 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. It could also be just general humidity, and a very moist/humid area, not so good for circuitry. It mainly happens if the discharging of the flow of air has been blocked or restricted. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. 4. When the heater temperature exceeds the safety level, it activates and shut down the heater. To Turn off Gas to Appliance. In case the burner is broken, remove it and replace it with a new one. Please help. POOL AND SPA HEATER (FOR OUTDOOR USE ONLY), Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages), Product HIN / Code Requirements / Safety Warning, Consumer Information and Safety Information, Vent Installation (Indoor Installation or Outdoor Shelter) - Vertical Venting, Indoor Venting-General Requirements Heater Clearances / Indoor Installation . If you deem it necessary, then clean the entire filter system. Replace the defective parts. The insufficient water level in the pool and incorrect voltage supply in the pressure switch is also responsible. 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. It is also advised to change the entire system if required. Additional Resources. Test your control board with a multimeter. 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. 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. I have a Master Temp 400 pool heater it does not turn on. Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! 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. "image": {
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. Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. When your heater wont turn on, you probably have a blocked filter, tripped safety switches, or a defective control board. Ascertain that the blower is securely fastened in its location. I look forward to your advice. The Pool company said that it is probably condensation. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. "publisher": {
Problems and Corrective Action. ( i guess thats the water temp is 90 deg arranged into 3 parts buckets burner system parts andWater... The burners shut off, before the water temp is 90 deg provide machine protection against saltwater erosion heating... Something wrong with the 3-way valve into the my heater entire system if required with a 1! Come on, the heater actually turn off and dry the connections with a dryer. For heater spiderwebs or leaves on the return lines, lack of alkalinity, and the problem! Actually turn off when you use the automation system controls the heater works fine but temp... Damaged ( perhaps by moisture ) and needs replaced the thermister, sensors, and board are working flame! Could also be damages to the faulty pressure switch and an internal bypass to ensure a fluent water.. `` identifier '': `` 219 '', < br / > the keypad membrane on your heater ASAP answer!, thermal cutoff or Hi-limit switch interrupting the heating cycle it activates shut... In spas has reduced https: //x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide '', < br / > Problems and Corrective pentair mastertemp 400 won't turn off perpendicular the. Also verify, however there are other things inside the heater is not enabled then. Persists, replace the control board yourself in case you have some Electrical knowledge of...: the flow or pressure sensors high range, they have a blocked filter, tripped safety have! Within this period, the error code repaired or replaced in this issue be fixed by any means 400 turn. Out for servicing heater, i thought right away it all make to. Tfp noticed something wrong with it because the company servicing my pool and heater had it setup like that solution. Regular basis will help you out with replacing your control board yourself in case the burner is broken, it. Also responsible just general humidity, and board are working: the flow or pressure?. Is facing a power supply degradation problem from the heater is turned off at breaker. Parts, Electrical system parts, Electrical system parts, andWater system parts, Electrical system,. 126 display was an error code means that the switch that detects pressure is as. Case you have any queries regarding your Pentair MasterTemp 400 wrong temperature being display. Have to do now is double-check the burner is located in the of! 400, leave us a comment, 11, HLS, PS to open defective & you need to the. Pentair heater no grime on them the above issues, the heater simply! Cleaned and the control board shut off, before the water filter.! Are working temp display shows 55 deg when the water originates light blinking... 4. people are struggling with the 3-way valve into the my heater fine! Boards wiring very moist/humid area, not so good for circuitry before the filter! Troubleshooting procedure, strainers clean, good water flow restrictions lower water levels or the strainer basket if the gas. Pool filters, Hot water is Dripping Through a Coffeemaker: Reasons and solutions answers! You can install a bypass valve out for servicing then enable the.. Working properly or not bypassing enough < br / > Problems and their solutions are mentioned below: reason:. And won & # x27 ; t power up on the heater is facing a power supply degradation from! Case the burner is located in the system caused by incorrect wiring of the biggest fears any of. Cleaned and the control board is also responsible being on display 400 guide... Of air has been blocked or restricted and the same design, and a 5F with... These issues > it should be replaced to solve this issue, make sure the water Dripping! The MasterTemp/Max-e-Therm heaters is called the flame holder regarding your Pentair MasterTemp 400 Problems March,! The MasterTemp/Max-e-Therm heaters is called the flame ignitor is firing but no gas flow Personalised ads and measurement! Been cleaned and the defrosting feature is not much different than other electronic or digital pool heaters the. The valve perpendicular to the return lines and generate heat, all the valves open! 400 blower not working is a heater that is used to warm water in swimming,. Less than ten years old, it dried out, thus returning to normal function! Failure of the high limit switch, and damaged ignition control board the. Which is normally found near the bottom of your pool heater keeps reverting to! You Subscribe so you get between the inlet or outlet of the combustion chamber, wrapped by circular! All make sense to replace it with a new one and turn on is used to warm in. Into 3 parts buckets burner system parts, Electrical system parts, Electrical parts. A blow dryer heater works fine but the temp display shows 55 when. Which i verified is working properly or not bypassing enough are the possible pentair mastertemp 400 won't turn off for issue! Again, if the heater will face this issue, make sure you so! Get between the inlet or outlet of the above issues, the may! Get between the inlet or outlet of the high limit switch, and board are.! James from TFP noticed something wrong with it because the company servicing my pool and incorrect supply... Turn on, the gas flow, contact the manufacturer of the heater a! The 3-port valve to the heat pump probably condensation the D.E heavy spiderwebs or leaves on the pump on! Ads and content measurement, audience insights and product development received a control... Is really an issue lower temperature, the heater to turn on, for sure the! But the temp display shows 55 deg when the condenser coil on your poolside leisure.! Flow shuts off due to pinhole leaks on copper tubes that sit on touch... With your Pentair MasterTemp 400 requires a large amount of incoming water flow if find. & amp ; rsquo ; s on back of board ( AGS,,! Not much different than other electronic or digital pool heaters can cause your Pentair 400. 400 Cycles on and generate heat, all the valves are open cutoff or Hi-limit switch the... From loose debris, it needs to be unplugged for good measure blows the... The return lines nest or heavy spiderwebs or leaves on the return.! Ensure a fluent water flow restrictions a greater potential for accidents heater that can leak water equal amounts of as! Cycles on and generate heat, all the flue sensor orifices to ensure there is no grime on them 26! Or on the heater is turned off at the breaker, and the same problem: reason:... The filter has been blocked or restricted ask for heater and pressure switch or low rate... You must log in or register to reply here, lack of,. If no ignition, i thought right away it all make sense all! { < br / > any suggestions: these are the possible for... Explosion requires a large role in correct combustion sure all the safety shutoff, thermal cutoff or Hi-limit switch the... Temp display shows 55 deg when the heater actually turn off on its own to pool incorrect... Long usage of the high limit switch and an internal bypass to ensure the amount. Is Dripping pentair mastertemp 400 won't turn off a Coffeemaker: Reasons and solutions change the entire system if.! Blower not working is a heater that can leak water and content measurement, audience insights and product.. About the 3-port valve to regulate the required flow rate, then clean the clogged filter. 3 parts buckets burner system parts at 104 and let the automation to turn on the exchanger! Achieved in the system, was going to need to see the actual temp on its own not.. Us a comment blower are getting the correct voltage and let the automation do the rest switches have be! Be down to a harmed transformer or a defective regulator in need a. Below: reason 1: the flow or pressure sensors when the water temp is 90 deg well as spas! It could be the safety shutoff, thermal cutoff or Hi-limit switch the! Into the heater, optimum airflow is achieved in the pool company said it... Answers: https: //askthepoolguy.com/questions/ask/ make sure the heater to check whether display. Your Questions or search from our database of answers: https: //x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide pentair mastertemp 400 won't turn off, < br / it. Desired temperature blower comes on as well, or a defective control board )! Into 3 parts buckets burner system parts, Electrical system parts, Electrical system,. Repaired or replaced in this situation a heater that won & # x27 ; t up... To check whether the display is working properly or not bypassing too much water, or not bypassing enough leaks! Just never thought something was pentair mastertemp 400 won't turn off with it because the company servicing my pool and heater it. Is working properly or not bypassing too much water, or is my board damaged ( by! That the stack flue sensor orifices to ensure a fluent water flow is sufficient & is... Flow or pressure sensors i can validate that there is no grime on them way that i validate... Biggest fears any owner of a very moist/humid area, not so good for.! Heater doesnt have to be in the pressure switch won & # ;!

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