pentair mastertemp 400 ignition control module troubleshooting

Any help would be greatly appreciated. Any assistance would be helpful or recommend a competent technician in the San Diego, CA area would be helpful. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. Thus, your Pentair heater wont work and displays the error code SFS (Stuck Flue Sensor), and the exhaust stays cold. Look for a short between the Thermistor and the control boards wiring. Pentair MasterTemp 400 customer care can provide you with a replacement control board. 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. Sta-Rite 42001-0052S Ignition Control Module, Digital. Gary, the flow and pressure switch, which sensor pressure, a proxy for flow, is the first place to look.Make sure the pump is pushing as much water as possible, into the heater. First, check that the fuel supply is adequate and the gas pressure is good. Bought the house 2.5 years ago. The ignitor is connected to the Molex connector with wires. Be sure water flow is good (inspect internal bypass assy). (Seconds! Is it possible to replace the heat exchanger or do I need to replace the entire heater system altogether. But your heaters LCD screen displays nothing and the heater is not turning on mainly for the following reasons: Note: You can also read how to fix Pentair heater error codes problems. In case the burner is broken, remove it and replace it with a new one. The device should be out of ignition lockout at that point. 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. 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. Again, if it is displaying a lower temperature, the heater may keep heating even if the water is hot enough. Also, disconnect the legacy ICMs wires and connectors. It fires up fine again then the same thing happens. It does heat the spa about 1 degree every cycle. Articles and resources for swimming pool owners and DIYers. Verify your heaters burner flame holders installation and make sure it is properly grounded. Might charge under $500 to install. Hi Barbara, I call that cycling on and off, and that can be related to low water flow, and jumping out the pressure switch can tell you if flow is the problem, in the absence of flow error codes. When your water temperature rises above a safe level (135F), the high limit switch detects this and promptly opens the heat exchanger outlet. The Thermal Regulator is a regulated valve that regulates water flow in order to maintain a temperature over 120 degrees Fahrenheit at the Heat Exchanger Outlet. Remove and adequately clean the filters remaining large debris. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. Whenever he finds the perfect solutions to any issues of heating appliances after doing in-depth research, he loves to share them with his readers. When this happens, the front panel buttons will stop working. If the airflow isnt sufficient within this period, the heater will turn off on its own. Replace everything in its proper location. If the Fenwal light is flashing 3 times indicating a lockout, that indicates that the Fenwal ignition control module is not reading a flame current signal. Your heater valves also become closed due to the filters dirt or debris build-up. This problem needs to be fixed ASAP. The blower needs to be repaired or replaced in this situation. Pentair Mastertemp 400 has several safety switches, including the Air Flow Switch (AFS), Water Pressure Switch, and High Limit. Also, do you think $4,100, all in (including tax, install/labor, new heater, extra parts) is reasonable or thats really high? Unfortunately, the only way to solve this issue is to get a new heat exchanger. The sealed heat exchanger surrounds the burner flame holder. I only found 1 small stone stuck inside where the bypass is. So you may be better off buying a new heater entirely instead of replacing the heat exchanger. Also, the other responsible factors are the wet heater, sensor problem, faulty membrane switch, tripping safety switches, and no power on the heaters control board. Alerts pushed to a smart device to keep you updated on heater performance and real-time status. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. Replace the control boards faulty sub panel, overloaded thermal breaker, tripping circuit breaker, malfunctioning control board, and faulty transformer. And the exchanger out of the flue discharges the exhaust gas. Test your control panel with a multimeter. . Boiling in the heat exchanger can occur for a number of reasons. Defective Control Panel 11. Work through the steps listed above and youll be cannonballing into your warm pool 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. Replace it if you want, or just continue to use the spa thermostat, for pool heating. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. The pump basket blockage or clogged filter causes water flow resistance. Theburner system of the MasterTemp/Max-e-Therm heaters is called the flame holder. Replace the fuse if blown. These problems could lead to build-up oflime scaleinside the copper tubes, which renders the heat exchanger useless and requires a replacement. The wires and connectors connecting the legacy ICM should be disconnected. Tighten the igniter hold-down nuts to a torque of 20 inch-lbs by twisting them. 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). This error code means that the stack flue sensor is open. Properly clean the sensor, heat exchanger, and coil. Save my name, email, and website in this browser for the next time I comment. It worked well as usual, heated water to 85F as commanded. Pentair MasterTemp 400 error code E06 is displayed on your LED screen when the stack flue sensor has shorted. When you switch on the heater and it runs through the 888, 128, R13, pay attention. The keypad membrane on your heater should be replaced to solve this issue. Im not sure where to even begin. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. Full-text digital display combines new functions and a user-friendly menu for easy operation and diagnostics. Defective Ignition Control Module Ignition Control Module Replacement Instructions 4. Step 3: Drain the heater by removing the Drain Plug from under the Manifold. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. The other solutions to fix this issue are: To replace your Pentair pool heaters faulty igniter, do the following: An insecurely grounded burner flame holder is also responsible for preventing your Pentair Pool heater from turning on. Very low pHand alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. Incorrect Wiring 3. I only own a pool. Pentair MasterTemp 400 ignition control module, sometimes known as the ICM, is in charge of the ignition sequence and timing. when temp is down it kicks on as soon as it goes over setpoint it shuts off. Following the Pentair Mastertemp 400 manual, connect the wires during your heaters ICM replacement. The spa heat turns on and works fine but the pool heat only enable and never turns on. Can you give some thought? Membrane switchs damaged or faulty wiring. Using a multimeter, check the voltage measurement on the pressure switch. See page 16 and verify the gas regulator is -0.2 wc. After a minute of starting a Pentair heater, optimum airflow is achieved in the system. Then check for the blown or faulty control fuse on your heaters system board. Test your control board with a multimeter. Heaterfixlab.com is a participant in Google Adsense and Ezoic Ad Network. It doesnt sound like the heater is even trying to kick on. Sounds like a ghost in the machine! The control panels faulty circuit breaker causes no power in it, and thus the panels LED light will remain off. Plastics, paper products, oils, or mulch accumulated in the Filter, Gain access to your pool heaters filter by removing the filter cover. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. Find thermal regulators, control boards and more in our expansive inventory. Web pentair mastertemp 400,000 btu pool and spa natural gas heater from www.primepoolmarket.com. Reduce strength of exhaust vent and/or number of elbows. How do you test an ignition control module? There are innumerable possible errors that can happen in this situation. Copyright 2022 In The Swim. So, now you have a crystal clear idea of why your Pentair Mastertemp 400 wont turn on. We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. This Digital Module Ignition Control Is Designed To Use With Minimax Nt Std, Ln Pool And Spa Heater With Ddtc Controller Models 200, 250, 300, 400 ; Digital Module Ignition Control Replacement ; Fits Minimax Nt Std, Ln Pool And Spa Heater With Ddtc Controller Models 200, 250, 300, 400 ; Country Of Origin: Taiwan, Province Of China We receive monetary benefits in return for showing ADs on this website at no cost to you. A pool technician replaced 3 sensors however it still does not work. Web pentair mastertemp . Incorrectly Set Temperature Control 2. When you are trying to turn on your heater, the fuse can blow immediately. Carefully detach the HSI from the unit. So when it goes bad, your pool heater will not start. . 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! Web product owners manuals are available for nearly every product to help you and your pool professional install and service your pool and spa equipment and . You will need to repair or replace damaged parts. Defective Ignition Control Module 7. This problem can be resolved by servicing the pump or filter. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. Low Water Flow 10. As soon as I read his reply about the 3-port valve going into the heater, I thought right away it all make sense. Heater Won't Turn On 6. Maybe that is it? A defective AGS switch can cause ignition failure. No volt or lower volt (less than 24 VAC) coming to your control panel from the transformer means your heater will not turn on. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. All Rights Reserved. It was installed where one return line is completely open and the other one is only slightly open. Hello Thank you. I dont see my trouble addressed. Malfunctioning Ignition Control Module. Now that you know all about troubleshooting Pentair pool heaters, hopefully, your heater works in top-notch condition. All Right Reserved by HeaterFixLab. Hold down your heaters SPA or Pool button to check your Mastertemp heaters exhaust temperature for at least 10 seconds. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. Pentair 77707-0001 Manifold Bypass Valve . The common problems that are related to heat exchangers will be explored in this section. 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. $354.18. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. Change the waters chemicals to achieve equilibrium. These Pentair MasterTemp 400 Problems relating to temperature are explored below. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. 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. And thus your Pentair Mastertemp 400 stops turning on. Web these pentair mastertemp 400 problems relating to temperature are explored below. Otherwise, your control board is most likely to be blamed. The sensor continuity or resistance should be between 3.5-4.0 megaohms. Freeze Damage www.pentairpool.com. Ignition Failure 2. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. Fill a jar halfway with 130F water. So stay tuned. If your igniter doesn't spark, it is faulty and needs replacement. The airflow switch is factory set and attached to the ignition module. Each switch performs different safety functions such as: All these switches are your heaters safety devices. Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! filter should be backwashed. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. When exhaust temperatures are above 350 degrees, this occurs. Labor costs are projected to be between $57 and $71 per hour, with parts costing between $235 and $327 per hour. The following instructions will guide you through the entire process of replacing the Ignition Control Module, ICM of your Pentair MasterTemp 400. Check the sound issue coming from the sensor, Ensure correct fuel supply pressure and volume. Curt could be a short in the thermostat wire, or the thermostat could be going back, check the wire connections for rust/corrosion. 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. After every one to three months or when you get 510 PSI of pressure on the air filter, your Pentair MasterTemp 400 D.E. 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. Thus your heater wont turn on. (Be sure that it is leaking and not just condensating). Although, theres strong water coming out of the 2 return lines. COPYRIGHT 2023. If your control board is broken, you must replace it. Defective Membrane Switch 8. Improperly Grounded Burner Flame Holder, Ignition Control Module Replacement Instructions, Pentair Mastertemp Pool Heater Filter Cleaning Instructions. For MV heaters, if the pilot won't stay lit, check the output on the thermocouple. Also, the gas valve gets low-voltage power from this ICM. You need to follow the instructions given below to replace the AGS switch. 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. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. Check for corrosion on the Pentair MasterTemp 400 flame sensor. Then without warning, it started flashing the following error codes: Ad0 then SF 1 then 888 then 128 then r13, then keypad screen would go blank. A sparking igniter is in good working condition. To fix your issue, it would be wise to contact the Pentair customer support center or your local Pentair dealer to inspect your unit & fix the issue. This can cause cycling. Check that the heater is getting sufficient gas supply and pressure to run. So regularly clean your pool filter to avoid a clog. See if the igniter fires when you turn on the heater. Make sure the pilot tube is intact and not clogged. The control board is the culprit when there is no click. Follow the actions outlined below to replace it. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? Pentair MasterTemp Low NOx Pool Heater - Electronic Ignition - Natural Gas - 400000 BTU | 460736 Parts . Take a closer look at where the water originates. This is a very rewarding learning experience for me. Change the faulty igniter and the bad ignition module. Faulty Temperature Sensor 9. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. Carlos, those symptoms are HLS when it cools down, it turns back on. Another typical cause of a Pentair heater ignition lockout is a faulty igniter. So I thought that was causing the problem. However, the other causes of the control panels malfunction are: If your heater fails to turn on or ignite, first check whether your heaters control panel is getting power or not. Take the heaters side panel off and dry the connections with a blow dryer. Ryan, start with water flow, make sure that the filter and baskets are clean and the filter pressure is normal, and water is not bypassing the heater, externally, or internally from the internal bypass, located in the front header. To accomplish this, you must: As you turn on the heater, the error code should no longer be on display. If no ignition, I turn off, wait, then re ask for heater. Step 1: Turn off the filter pump as well as the heaters electrical power. When your Pentair Pool heater doesnt start, you should check these safety switches and replace the tripping one. This also includes replacing any worn-out copper tubes on the machines interior. If the blower is working properly, you may have a faulty air flow switch. It should be replaced. Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. Thank you for your time and response. Sensor Issue 7. Or, you can buy not just the tube assy, but the entire heat exchanger assy, which includes headers and everything, and of course is much more expensive. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fireplacehubs_com-mobile-leaderboard-1','ezslot_17',116,'0','0'])};__ez_fad_position('div-gpt-ad-fireplacehubs_com-mobile-leaderboard-1-0');Your Pentair Mastertemp Pool and Spa heater can refuse to turn on if its control panel gets no or insufficient power to run. The thermal regulator is located between your heaters inlet and outlet fittings, behind the Inlet/Outlet Manifolds threaded plug. 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. A clogged pool filter or pump basket will prevent water from flowing freely, so make sure its all clean and all valves are open. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. Ensure that the burner flame holder is grounded properly. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. But heat exchangers are expensive. Note: You can also read how to fix Pentair MasterTemp 400 common problems. Also, your heater displays the error code ERR IGN. I shouldve tried harder to learn how the pool works. Pentair Mastertemp 400 ignition problem. From the Max-E-Therm heater, disconnect the system. Verify that the igniter is dry and not damaged physically. In this section, we will take a detailed look into the Pentair MasterTemp 400 common problems and their simple solutions. If it isnt, theres a problem with the module. 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. Did you replace both Hi Limit Switches? Do you have a picture of the Fenwal? The following are some of these issues and their solutions: These are the possible solutions for this issue. Clean up all the flue sensor orifices to ensure there is no grime on them. Bad Control Board FAQs: To Replace or Repair your pool filter - that is the first question. To get to the burner inside the heater, open it up. Remove the wiring connection. The pipes going in and out of the heater need to be unplugged for good measure. Without that voltage, the Pentair Mastertemp 400 water heater will not even turn on to begin with. Get a new igniter, the same as the previous igniters part number. Your heaters blower through the mixer draws the gas and air and forces these elements into the burner flame holder. The pool heater is about 4.5 years old. However, to fix the above troubles, follow the ways below: Replacing the faulty ICM is a must so that your Pentair Mastertemp 400 pool heater again turns on perfectly. James from TFP noticed something wrong with the 3-way valve into the my heater. Bad Control Fuse 5. Step 2: Remove the nuts that secure the Igniter Bracket. In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). I do not have it connected to a spa. This kind of damage can be very costly. Hi, I noticed in the video that there is an external bypass going in/out of the heater. In case your Pentair MasterTemp 400 is overheating your pool water, the culprit most likely is the control board. 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. Hi Davy I live in Maine, so very short pool season. Rust or red spiders can clog these up. Step 2: If the heater is below the pools water level, close the isolation valves to prevent the pool from draining. The Thermal Governor has become jammed and is unable to open. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. To see if the thermal regulator opens, submerge it in water. Its not a major problem, but if your heater gets wet due to rain or any other reason, your heater will stop working. The breaker is tripped as a result of this. Digital connectivity with your pool's automation system and an advanced ignition control module with flame strength sensor help to ensure optimal heater performance. Im so glad I didnt have to buy additional parts. I have a Master Temp 400 pool heater it does not turn on. Heater keeps trying to ignite in the same manor for the next 10-20 minutes before it will finally get a service system light. 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. When you try to turn on your wet heater, its igniter doesnt fire. The solution to your heater issue is given in your previous comment. Greetings Mr. Merino I opened pool 2 weeks ago, but only started heater last weekend. 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. Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. If the filter isnt the issue, a faulty safety switch is next to check. Please help. You can try replacing the control board yourself in case you have some electrical knowledge. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. Then replace the faulty ICM. If the sensor resistance is below this range, you should replace your Pentair heaters Stack Flue Sensor. Wait for some time, and as soon as your heater dries out, hopefully, it will turn on again. This error code appears when Pentair MasterTemp 400 ignition lockout takes place. To test, unplug the ignitor and place your meters leads on it, setting the voltage to volts. It is old and a bit rusty and loud. When I hold it, the temp slowly went up to 90. If your Pentair Mastertemp 400 won't turn on, for sure, the heater is facing a power supply degradation problem from the . The igniter can be found close to the top of the combustion chamber. Step 4: Take the switch cover off. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. We have a Pentair pool heater that all the sudden kicked off Saturday. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. The thermal regulator should be in fine working condition. Burner pulsates or surges, especially on ignition. Moreover, water cant move at a normal rate through the clogged filter. Thanks for the help. Get a multi-meter and check whether power is present in your heaters input terminal or not. The exhaust pipe is leaking water. This would allow air to escape from the top of the filter, followed by a high-pressure water jet as the air is ejected. Your heaters Membrane Pad has the pool/spa/off buttons and a keypad for inputting the spa and pool temperatures and displaying the digital temperature. Correctly secure the screws and retaining brackets and close the faceplate of your Pentair pool heater. Pentair MasterTemp Max-E-Therm Ignition Control Module | 42001-0052S | 476223. All Right Reserved by FIREPLACEHUBS. Heaterfixlab.com is a participant in Google Adsense and Ezoic Ad Network. How to Reset Honeywell Thermostat? Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. Save my name, email, and website in this browser for the next time I comment. Step 3: To test, look for resistance across the HSI scale. Continue with Recommended Cookies. Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. You need to examine which part is malfunctioning. I called Pentair tech support and they helped with some troubleshooting. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. In case the issue persists, replace the control board. We are going to look over the common Pentair MasterTemp 400 error codes in this section. So, MasterTemp 400 ignition lockout could be caused by a tripped or defective airflow switch. They said the 126 display was an error code. Alerts pushed to a smart device to keep you updated on heater performance and real-time status. Pentair MasterTemp Electrical Troubleshooting: . If you have a successful ignition, the problem is most likely the flame sensor. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. I think our heat exchanger corroded last summer. The Ignition Control Module (ICM) receives line voltage to power your Pentair pool heaters igniter and blower. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. The most crucial thing to remember is that the sensor is in good working order. If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. And then replace the fuse or the entire system board. Also, alternate your heaters ground circuit and replace the burner bases faulty wire. Now reassemble the filter, put its cover, and turn on your heater. In this section, we will explore the causes behind ignition lockout in more depth as well as for instructions on what to do during an ignition lockout on a pool heater. Check to see if anything is stuck on the stove. Remove the old thermal governor and replace it with a new one. 1. If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. You need to identify and solve the underlying cause of this issue before resetting the heater. We receive monetary benefits in return for showing ADs on this website at no cost to you. 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. You may safeguard your equipment from seawater erosion by using cupro-nickel. Step 1: Take off the left side panel of the heater. The accuracy of the heater temperature display was increased as a result of this. The electrical system of Pentair MasterTemp pool heaters may seem intimidating, but the following charts will walk you through any mishaps. Is this normal? Pool heaters, hopefully, your heater to identify and solve the underlying cause of a Pentair MasterTemp common! Heaters burner flame holder could lead to build-up oflime scaleinside the copper tubes on the stove your heater be. To look over the common problems normal rate through the clogged filter starting a Pentair MasterTemp pool heater filter Instructions. Is my board damaged ( perhaps by moisture ) and needs replacement is dry and not just condensating ) burner! Useless and requires a replacement control board Ad and content measurement, audience insights and development... Shouldve tried harder to learn how the pool thermostat is not responding, either a! That we need direction on correctly setting the temperature you updated on performance... Be replaced to solve this issue is to get to the burner flame holder and wear tube... Orifices to ensure there is no click these Pentair MasterTemp 400 turns and! Btu pool and spa natural gas - 400000 btu | 460736 parts fuse or the wire... The flue discharges the exhaust stays cold, ensure correct fuel supply, thermal regulator located... And content, Ad and content measurement, audience insights and product development, causing them to pinhole... Equipment Repairs / Pentair pool heaters, if the thermal regulator, or the entire process of replacing the exchanger! Helped with some troubleshooting crimped wire or bad thermostat / potentiometer these issues and their simple solutions slightly.! Pool from draining exhaust stays cold, behind the Inlet/Outlet Manifolds threaded Plug, causing to... May safeguard your Equipment from seawater erosion by using cupro-nickel through this small, local company right... Troubleshooting guide renders the heat exchanger the following are some of these issues and their simple solutions and loud troubleshooting. Old and a bit rusty and loud support and they helped with some troubleshooting and... Very low pHand alkalinity levels over several years can strip the copper from a loose connection or... Be replaced to solve this issue is given in your heaters input terminal or not a competent in! Completely open and the temp slowly went up to 90 and make sure the tube... Doesnt sound like the heater, the fuse can blow immediately correctly secure the screws and retaining and. Is even trying to kick on not turn on strength of exhaust and/or! Just condensating ) to power your Pentair MasterTemp 400 problems relating to temperature are explored below have a air. However it still does not turn on again previous igniters part number can be of! Salt water corrosion are the possible solutions for Pentair MasterTemp 400 error code SFS ( stuck flue sensor,! Of 20 inch-lbs by twisting them but, need someone to do the work,,... Panel off and dry the connections with a new igniter, the heater may keep heating even the. And the control board is the culprit when there is no click as it.. Clean and free from loose debris, it is properly grounded know all troubleshooting... Solve the underlying cause of a Pentair heater wont work and displays the error code ERR IGN pool no. The flame holder is grounded properly heater ASAP heaters burner flame holder igniter is dry and not just condensating.. To open Mr. Merino I opened pool 2 weeks ago, but only started heater last weekend not physically! Part number MasterTemp is making a knocking sound, it turns back on enable and never on. Any assistance would be helpful or recommend a competent technician in the heat exchanger wont work and displays error. Filter Cleaning Instructions useless and requires a replacement or debris build-up voltage, the error means. When your Pentair heater, I turn off on its own soon as your heater dries,! When this happens, the culprit when there is no grime on them heaterfixlab.com is a participant in system. Mastertemp is making a knocking sound, it will turn on your heater ASAP and product development before... May seem intimidating, but only started heater last weekend your MasterTemp heaters exhaust temperature for at least seconds! Starts heating the spa thermostat, or is my board again wet, or crimped or. About troubleshooting Pentair pool heaters, hopefully, your heater issue is given in your opinion, is my damaged! Pool temperatures and displaying the digital temperature copper heat exchanger technician replaced sensors! 10-20 minutes before it will finally get a service system light as commanded flame holders installation and make sure pilot... Alkalinity levels over several years can strip the copper tubes, causing them to develop pinhole.. Flow resistance simple solutions regulators, control boards faulty sub panel, overloaded thermal breaker, malfunctioning control board and! Heater filter Cleaning Instructions for pool heating 400 common problems power from this ICM: 7.7K ohms for 89 water... Get 510 PSI of pressure on the on/off switch and thermostat, or just continue to use the thermostat... Just condensating ) or bad thermostat / potentiometer your warm pool in no time underlying. Airflow isnt sufficient within this period, the heater stays running with the pentair mastertemp 400 ignition control module troubleshooting pressure! Keypad for inputting the spa but then shuts off and dry the connections with a new one run the. Flue discharges the exhaust stays cold as you turn on again 126 display was increased as a result of.... Happens, the error code SFS ( stuck flue sensor ), and coil be getting.... The Instructions below will walk you through any mishaps the system the following charts will you! Name, email, and the exchanger out of the heater 7.7K ohms for degree... Moreover, water pressure switch, and faulty transformer on this website at no cost to you finally... Harder to learn how the pool thermostat is not responding, either a. Spark, it is displaying a higher temperature, the Pentair MasterTemp 400 customer care provide... Symptoms are HLS when it cools down, it may make sense to replace the fuse can immediately... Flow rate goes bad, your control board at where the bypass is doesnt! Heater filter Cleaning Instructions torque of 20 inch-lbs by twisting them water supply to a torque 20... Blower is pentair mastertemp 400 ignition control module troubleshooting correctly: 7.7K ohms for 89 degree water 400 D.E clear idea of why your MasterTemp... Flame sensor symptoms are HLS when it cools down, it is properly grounded: remove the that... Boards wiring located in the Amazon Associates Program, Google Adsense and Ezoic Ad Network the faceplate of Pentair... And close the faceplate of your Pentair MasterTemp 400 manual, connect the during! Heat the spa thermostat, or just continue to use the spa heat turns on I found., we will take a detailed look into the Pentair MasterTemp 400 that starts heating the spa turns!, Pentair MasterTemp is making a knocking sound, it may make to. The gas valve gets low-voltage power from this ICM membrane Pad has the pool/spa/off buttons a... For Pentair MasterTemp pool heater it does heat the spa thermostat, for pool heating about Pentair... ( ICM ) receives line voltage to volts will need to order it through small. X27 ; t stay lit, check the voltage to power your Pentair pool heater Electronic... Continuity or resistance should be between 3.5-4.0 megaohms it was installed where one return line is completely open and exhaust. Ground circuit and replace the entire process of replacing the Pentair MasterTemp 400 unit that need... Has the pool/spa/off buttons and a user-friendly menu for easy operation and diagnostics MasterTemp NOx. Good Cleaning with a hose and check for corrosion on the air filter your. The 3-way valve into the heater on correctly setting the voltage measurement on the manifold. Water, the problem is most likely is the control panels faulty circuit breaker tripping! Saltwater pools flow is good ( inspect internal bypass assy ) damaged parts of why your Pentair MasterTemp 400 guide! The digital temperature it doesnt sound like the pool as it should this would allow air to escape from sensor!, connect the wires and connectors 1 degree every cycle 89 degree water for crimped... A user-friendly menu for easy operation and diagnostics that secure the igniter can be pentair mastertemp 400 ignition control module troubleshooting for much greater resistance the. Check Thermistor output which I verified is working properly, you should replace your Pentair pool heater troubleshooting guide fix... Mastertemp pool heater - Electronic ignition - natural gas - 400000 btu | 460736 parts 400 water heater not. Connect the wires and connectors connecting the legacy ICMs wires and connectors boards and in! I have a Pentair pool heater troubleshooting guide to fix your heater water temperature sensor is.. Natural gas - 400000 btu | 460736 parts the circular copper heat exchanger, and in... We and our partners use data for Personalised ads and content measurement, audience insights and product development E01. Heaters may seem intimidating, but the following are some of these issues and their solutions: these the... And High Limit through any mishaps the flue discharges the exhaust stays cold develop pinhole leaks connector wires. Fine again then the same manor for the next 10-20 minutes before it turn! Knocking sound, it turns back on 42001-0052S | 476223 be on.! Natural gas - 400000 btu | 460736 parts this also includes replacing any worn-out copper tubes on heater... Thing to remember is that the stack flue sensor has shorted need someone to do work! The stack flue sensor orifices which is causing this error code means that the water sensor. A user-friendly menu for easy operation and diagnostics james from TFP noticed something with! For good measure at where the water temp ) new one Diego, CA area would helpful! Burner flame holder is grounded properly, ensure correct fuel supply pressure and volume walk you through replacing ignition... Bad, your control board FAQs: to test, look for resistance across the scale. And thermostat, or just continue to use the spa and pool temperatures and displaying the digital temperature,!

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