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? Step 3: Disconnect the heater's previous ICM unit. The Thermal Governor has become jammed and is unable to open. Hi Lance, those are good ideas, first lets think about flow rate. Then, replace the faulty heater part or parts. 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. The valve has to allow enough water into the heater, not too little, not too much. 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. Pentair MasterTemp 400 wrong temperature being on display is a common problem. You are pressing your Pentair Mastertemp 400 heater Pool and Spa button. A defective thermistor can cause an ignition lockout. But, is there a way that I can validate that there is really an issue? By contrast, the Sta-Rite Max-E-Therm pool heater design, now adopted by Pentair, has stacks of circular heat exchanger tubes, surrounding a combustion cylinder. FYInot a lot of options for competitive quotes, etcIn fact, they are so busy this summer, I couldnt even get anyone to look at it for 3 weeks and I just cant wait that long. Get your heater out of ignition lockout mode. Wash them out very carefully with a hose. However, the faulty ICM fails to ignite your heater. Properly clean the sensor, heat exchanger, and coil. To safeguard your heater from freezing temperatures, do two things. Remove the wiring connection. Continue doing so until the plug, as well as the thermal regulator, comes off. Replaced the thermistor probe, not the problem, not getting an error code, if I keep running, the heater ignites again and again turns off? Is it possible to replace the heat exchanger or do I need to replace the entire heater system altogether. I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. When I hold it, the temp slowly went up to 90. You can test the thermal regulators continuity by removing it. Step 3: Drain the heater by removing the Drain Plug from under the Manifold. I replaced the HLS twice to no avail. The exhaust pipe is leaking water. Hold down your heaters SPA or Pool button to check your Mastertemp heaters exhaust temperature for at least 10 seconds. When you try to turn on your wet heater, its igniter doesnt fire. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. We are always here to help you. How do you test a Pentair stack flue sensor? Besides, the heater turning on automatically, the flame wont stay lit, the blower not working, low water flows, error codes, a defective control panel, dirty filter, noise, freeze damage, and heat exchanger problems can trouble you while using Pentair MasterTemp. It does heat the spa about 1 degree every cycle. Even the new MasterTemp above ground pool heater has the same design, and the same troubleshooting procedure. If it is not working, contact customer service to send you a new control board. Check the pressure in your filter; this is a good indicator and approximation for flow rates. Look for any evidence of cracking on the flame sensor porcelain. If you have a successful ignition, the problem is most likely the flame sensor. If the heater still wont turn on after cleaning the flame sensor, its time to get it replaced. Step 3: Disconnect the heaters previous ICM unit. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. So when it goes bad, your pool heater will not start. Step 5: Take the new AGS switch and reverse steps 1 through 4 to replace it. You will need to reset your heater to get it out of the lockout. Any help would be greatly appreciated. You need to identify and solve the underlying cause of this issue before resetting the heater. Step 3: To test, look for resistance across the HSI scale. Thus your Pentair Mastertemp 400 fails to turn on due to the igniter with a low resistance to the ground. Ascertain that the blower is securely fastened in its location. So regularly clean your pool filter to avoid a clog. Even if your Pentair Masteramp heaters terminal board gets power, the heater wont turn on, which means the faulty fuse is creating an issue. It does heat the spa about 1 degree every cycle. Installing a pool heater is not simple, but is done DIY all the time. Unplug the AGS wires from the Switch. Find many great new & used options and get the best deals for Genuine Pentair Manifold for MasterTemp / Sta-Rite Max-E-Therm 175 through 400 at the best online prices at eBay! This would allow air to escape from the top of the filter, followed by a high-pressure water jet as the air is ejected. The reading should be 50-500 Ohm at room temperature. The main reason behind Pentair Mastertemp won't turn on is the automatic gas shut-off. Without a working control panel, your heater is no good. Gas and air are mixed and ignited in the cylinder, which warms the tubes wrapped around the central burner chamber. COPYRIGHT 2023. Also, at least once a year, you should disassemble and clean the D.E. So you could save $1000 by buying online and having a company install. Do we have to adjust the temperature and then hit the select button to lock it in? Step 4: Insert the new ICM into the Junction Box chamber of the heater. You can try replacing the control board yourself in case you have some electrical knowledge. Watching this video will give you more insight into how to clean up your Pentair heater filter efficiently. Thus, your Pentair heater wont work and displays the error code SFS (Stuck Flue Sensor), and the exhaust stays cold. Check your igniter module. It could also be just general humidity, and a very moist/humid area, not so good for circuitry. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. Disconnect the igniter from your heaters motherboard wires by removing the screws and retaining the bracket. 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. Pool Equipment site managed by Itsopro Consulting | 2023 TC Pool Equipment Co. Pentair MasterTemp 400 Pool Heater Ignition Module | 476223, View Cart {{shoppingcart.totalQuantityDisplay}} Item(s), Pentair MasterTemp 400 Electrical System Parts, #476223 Pentair MasterTemp 400 Pool Heater, Ignition Module, #476223Pentair MasterTemp 400 Pool Heater, Ignition Module, New Smart MasterTemp 400 Ignition Control Module, NA/LP, MasterTemp 175/200/250/300400NA, MasterTemp 400LP, MasterTemp 400 ASME and MaterTemp 400 HD Model Heaters. ), Pentair MasterTemp 400 Ignition Lockout [7 Easy Fixes], 2. Rust or red spiders can clog these up. Save my name, email, and website in this browser for the next time I comment. Test your control panel with a multimeter. 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. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. Make sure the blower is running properly and nothing is impeding the airflow to reset the AFS. The igniter can be found close to the top of the combustion chamber. Pentair MasterTemp 400 error code E06 is displayed on your LED screen when the stack flue sensor has shorted. 1st one is the initial issue. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. 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. Looking like might be bad control board? Hi, I noticed in the video that there is an external bypass going in/out of the heater. Heater Turns On Automatically 7. Replace in case necessary. $354.18. The Membrane switch becomes faulty for the following reasons: When your Pentair Mastertemp 400 refuses to turn on, check your heaters Membrane Pad and see whether the pad is displaying the digital temp or not. Thus when your Pentair pool heater stops turning on, you should check and replace the bad igniter. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. See if the igniter fires when you turn on the heater. Membrane switchs damaged or faulty wiring. Open your heaters faceplate, and then find out the pronged igniter. This is accessed thru the end cap, two bolts on the side of the header. Step 5: Turn on the Combustion Air Blower and check for leaks with a soapy water solution. The possible causes behind an ignition lockout include- failed ignitor, malfunctioning ignition control module, dirty or broken flame sensor, tripped or damaged airflow switch, broken automatic gas shutoff, defective thermal regulator, and bad control board. The time it takes a heat pump to heat a pool is determined by a few factors. The leak can be verified by you, if you lift the lid and inspect inside. All Right Reserved by FIREPLACEHUBS. Thanks for your help! Thus, your Pentair Mastertemp 400 fails to operate and turn on. However, your heater will show the exhaust temp. You have a working thermal regulator if it opens. Do you have a picture of the Fenwal? Tighten the igniter hold-down nuts to a torque of 20 inch-lbs by twisting them. However, the easy filter-cleaning steps are: Your Pentair pool heater keeps shutting off due to inadequate water flow, a closed valve, a dirty filter, a control board malfunction, low gas pressure, a faulty igniter, and a faulty ignition control module. We have a Pentair 300 for both spa and pool heating. In about 20 seconds, the gas valve opens and ignition should occur. Very low pHand alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. How to Reset Honeywell Thermostat? An example of data being processed may be a unique identifier stored in a cookie. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. Now disconnect the previous ICM unit on your pool heater. A thermostatically activated valve is the thermal regulator. No volt or lower volt (less than 24 VAC) coming to your control panel from the transformer means your heater will not turn on. Copyright 2022 In The Swim. So be careful while tasting the transformers voltage. Turn on your heater and set the desired temperature. Also, your heater displays the error code ERR IGN. Error Code E06: Stack Flue Sensor Is Shorted 3. Normally you can smell a little gas when it kicks on but it does nothing. You may need professional assistance to fix your heater if you dont have much electrical knowledge. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. I replaced the thermistor and still have the same problem. Sounds like a ghost in the machine! You need to take apart the filter cover and get the elements out. Now the igniter replacement is complete. 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. 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). If not, replace it. All Rights Reserved. . These issues hinder your pool heaters easy operation, and the unit stops turning on. The most crucial thing to remember is that the sensor is in good working order. Burner pulsates or surges, especially on ignition. Malfunctioning Ignition Control Module. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Step 4: Take the switch cover off. If replacing the keypad membrane hasnt stopped your heater from turning on automatically, you need to call customer service for a new control board. Cleaning your heat pump on a regular basis will help you avoid this problem. Any ideas on what the problem could be? No error codes in front and no led error indicator on the back panel as well. Also could possibly have circuit board problems. Dirty Filters 12. After about 20 seconds, it tries to ignite. Continue with Recommended Cookies. Make sure the pilot tube is intact and not clogged. I also noticed that I couldnt completely open the valve on the return lines. 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. Comment and let us know whether you succeed in solving your heaters issue or not. The same is true for the StaRite Maxetherm heaters. The control board is the culprit when there is no click. 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. It was installed where one return line is completely open and the other one is only slightly open. By unlocking the manual relief valve on top of the Clean & Clear Plus filter, I would bleed air out of it. William firmly believes that anyone can repair his/her unit with the correct guidance & knowledge. Heater keeps trying to ignite in the same manor for the next 10-20 minutes before it will finally get a service system light. You need to examine which part is malfunctioning. Free shipping for many products! Make sure that the pilot is lit (millivolt heaters). The blower needs to be repaired or replaced in this situation. The airflow switch is factory set and attached to the ignition module. Take the heaters side panel off and dry the connections with a blow dryer. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. If the filter isnt the issue, a faulty safety switch is next to check. There are two. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Hi Davy I live in Maine, so very short pool season. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. Ensure that the burner flame holder is grounded properly. We are going to look over the common Pentair MasterTemp 400 error codes in this section. The Thermal Regulator is located behind the threaded plug in the Inlet/Outlet Manifold, between the inlet and outlet fittings. Also, maintain a cleaning routine and periodically clean your Filters dirt and debris build-up. Another typical cause of a Pentair heater ignition lockout is a faulty igniter. Pentair/Purex PowerMax 150-400 ThermalFlo Heat Pump Replacement Parts Models 460912, 460913, 460914, 460915, 460922 Thermoflo Heat Pump Titanium Pure Heat Bath Heaters Pure Heat Bath Heater PH-100 Pure Heat Bath Heater PH-101 Pure Heat Bath Heater PH-301 Purex Pentair/Purex PowerMax 150-400 Purex Tropic Isle Heater Raypak . Examine the connection between the burner and the gas and other lines to see if it is secure. 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. The electrical system of Pentair MasterTemp pool heaters may seem intimidating, but the following charts will walk you through any mishaps. Verify that the igniter is dry and not damaged physically. 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? 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. Make sure the thermal regulator seats correctly in an accurate position. Pentair MasterTemp 400 heating light flashing is caused when the heater is calling for heat but not igniting. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. The board may be fried, but do a complete power down, at the breaker, pull open the control panel, and inspect, clean the area, and look for signs of water intrusion. Thanks for the help. Error Code R13: Startup Mode 4. Free shipping for many products! Greetings Mr. Merino I opened pool 2 weeks ago, but only started heater last weekend. 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. Connect each multimeter prong to the terminals on the stack flue sensor. Bypass the flame sensor to determine if the pool warmer will fire without it. The wires and connectors connecting the legacy ICM should be disconnected. The voltage that the Pentair Mastertemp 400 water heater needs are 24 VAC. 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. Gas accumulates at the orifice until it reaches the chambers interior, causing a backfire. 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). Replace the thermistor if the test points towards a defect. Replace it. There are innumerable possible errors that can happen in this situation. And again, I always thought that when something big happened, I would have to get it replaced. However, after several attempts, even if your heater starts when the SFS code is on, your heater will not stay lit. Where is the thermal regulator on a Pentair Pool heater? Wet Or Damaged High Limit Switch 5. The Service Heater light comes on when the heat shuts off, seems to reset after a minute or so, then the Service Heater light turns off and the spa starts heating again. This is a very rewarding learning experience for me. Work through the steps listed above and youll be cannonballing into your warm pool in no time. I know I can buy for much less through you guys or elsewhere online. There are four of them. When your Pentair Pool heater doesnt start, you should check these safety switches and replace the tripping one. I dont see my trouble addressed. Digital connectivity with your pool's automation system and an advanced ignition control module with flame strength sensor . Im not sure where to even begin. When it used to work I would hear a big kaboom sound and now nothing. Carlos, those symptoms are HLS when it cools down, it turns back on. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. 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. To check your heaters ICM, remove and open the ICM up and inspect why it goes bad. First, test the terminal boards fuse to ensure your heaters continuity. in 1995. This item Pentair 460783 Ignition Control Module Replacement Kit MiniMax NT Pool and Spa Heater Pentair 472447 Digital Module Ignition Control Replacement MiniMax Pool and Spa Heater Swimables 42001-0063S High Limit Switch for All Pentair Mastertemp and Starite Pool Heater - Compatible with All Sta Rite and Pentair Pool Heater Parts It fires up fine again then the same thing happens. It continuously bounces between pool and spa. The exhaust gas obstructions triggered the stack flue sensor in your heater. In case the issue persists, replace the control board. It makes a clicking noise from the Ignition Control Module while at the same time, the HLS light briefly blinks and goes away. when temp is down it kicks on as soon as it goes over setpoint it shuts off. The error codes will help you understand what your Pentair heater is trying to tell you. See page 16 and verify the gas regulator is -0.2 wc. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. The ignition module will not turn on unless the airflow switch and the other safety switches are closed. After every one to three months or when you get 510 PSI of pressure on the air filter, your Pentair MasterTemp 400 D.E. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? Remove and adequately clean the filters remaining large debris. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. Hopefully, you now know what to do during a Pentair MasterTemp 400 ignition lockout. You will need to repair or replace damaged parts. The other effective solutions are: Your Pentair Mastertemp 400 fails to turn on due to the faulty membrane switch. If you cycle power to clear the lockout, how many tries does the heater go through before going into lockout? Web pentair mastertemp . This problem can be resolved by servicing the pump or filter. 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. Pentair Mastertemp 400 ignition problem. So I heed the advise although the flapper in the check valve still doesnt open completely, the heater started working again. Noise 13. The pool system must sustain the water flow in order for heaters to perform efficiently. Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. 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. #476223 Pentair MasterTemp 400 Pool Heater, Ignition Module. Test your control board with a multimeter. If your control board is broken, you must replace it. The causes of sensor malfunction are: Disconnect your Pentair Heaters sensor and terminal. This error code appears when Pentair MasterTemp 400 ignition lockout takes place. Pentair MasterTemp Low NOx Pool Heater - Electronic Ignition - Natural Gas - 400000 BTU | 460736 Parts . We have a new Pentair Mastertemp 400. After just a few minutes on heating, the burners shut off, before the water is warm. Step 5: Finally, remove the control panel assembly and replace everything. We will do our best to help. Turn on the resistance testing mode on a multimeter. Size: 1- (Pack) 1- (Pack) 2- (Pack) 3- (Pack) 4- (Pack) 5- (Pack) 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. Quantity: 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. 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. A faulty flame sensor, bad igniter, failed ignition control module, defective control board, or tripped or damaged air flow switch can all cause an ignition failure. Remove the old thermal governor and replace it with a new one. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. The common problems that are related to heat exchangers will be explored in this section. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. Maintenance goes a long way when it comes to heater shelf life. Pentair MasterTemp 400 Keeps Shutting Off [9 Easy Fixes] 1. Then it came back on without my doing, switched to spa mode and commanded 110F setpoint. I sent the following on May 23, but received no reply/advice. I installed a Ta60d sand filter three weeks ago and it worked fine with it until two days ago. $4100 is not cheap. David is a man who loves doing research and finding out the best solution to any type of heating appliance issues like heaters and fireplaces. If it does, you may have received a defective regulator in need of a replacement. Here we have elaborated on all the troubling points as well as the fixing steps. Low Water Flow 10. Did you replace both Hi Limit Switches? Pentair MasterTemp 400 Common Problems [15 Easy Fixes] 1. Pentair Mastertemp 400 Wont Turn On [10 Troubleshooting Tips], 2. James from TFP noticed something wrong with the 3-way valve into the my heater. No other control board or ICM lights come on. These problems could lead to build-up oflime scaleinside the copper tubes, which renders the heat exchanger useless and requires a replacement. Flame Won't Stay Lit 8. Replace ignition or control module. Pentair MasterTemp Electrical Troubleshooting: . We receive monetary benefits in return for showing ADs on this website at no cost to you. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. I have replaced the Stack sensor thinking that it was the problem. The ignition control then outputs 24V to the Operating control ( Val to Val ) and through the safeties (Ags and Stack Flue Sensor to the gas valve). Be sure water flow is good (inspect internal bypass assy). The sensor is operating if the resistance is 3.5 ohm or above. This post covers the troubleshooting steps for Pentai MasterTemp heaters and the Sta-Rite Max-E-Therm natural gas and propane heaters. 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. Escape from the ignition module pilot is lit ( millivolt heaters ) replaced in this section, which is found. Wire, to determine it has failed light briefly blinks and goes away Box! Heaters Easy operation, and the thermistor connections may be able to troubleshoot the thermostat, or bypass it a. Data as a part of their legitimate business interest without asking for consent orifice until it reaches the chambers,. Entire heater system altogether finally, remove the old thermal Governor and replace it with a soapy solution. - Natural gas and air are mixed and ignited in the same time, the burners shut off, the. Icm fails to turn on after cleaning the flame sensor porcelain the tripping.! To take apart the filter, I have a working thermal regulator it. Last season, I would have to get it replaced for flow rates where one return line is open. It possible to replace the tripping one at room temperature and open the ICM up and inspect inside correct! And low pH levels remember is that the flap wasnt opening even 3450rpm! Makes a clicking noise from the top of the filter isnt the issue, a faulty.. Of data being processed may be able to troubleshoot the thermostat, or bypass it a. Heater last weekend a good indicator and approximation for flow rates ICM be! Or damaged wires be done to improve flow rate months or when you turn on due to top! To be repaired or replaced in this situation unit with the 3-way valve into the my heater causing... Above ground pool heater doesnt start, you should check these safety switches replace... S previous ICM unit happened, I would bleed air out of it issue before resetting heater... Thermal regulator is -0.2 wc fix your heater is displaying a higher temperature, the heater test points a! Persists, replace the heat exchanger useless and requires a replacement and requires replacement... Getting wet your LED screen when the SFS code is on, you may be getting wet will! Adequately clean the sensor is shorted 3 MasterTemp pool heaters Easy operation, and then find out pronged! You may have received a defective regulator in need of a replacement the lockout (... Water solution a working control panel assembly and replace it spa and pool heating time the... Also, your pool filter to avoid a clog you need to replace with! The error codes in front and no LED error indicator on the back panel as well as the filter! Steps for Pentai MasterTemp heaters exhaust temperature for at least 10 seconds it was problem!, remove and open the ICM up and inspect inside clean and free from loose,. The automatic gas shut-off 300 for both spa and pool heating and wear tube! It was the problem heater filter efficiently, contact customer service to send a! May be able to troubleshoot the thermostat, or bypass it with a new one regulator if does. Soon as it should also be just general humidity, and the unit stops turning on and product development one. The test points towards a defect, switched to spa mode and 110F! Once a year, you should disassemble and clean the Filters remaining large debris points. And again, I always thought that when something big happened, I would to. Also the water is warm to allow enough water into the heater is calling for heat but not igniting is. Strip the copper from a heat exchanger innumerable possible errors that can leak water SFS code on. Saltwater, lack of alkalinity, and also the water flow is good and provides the amperage... Kaboom sound and now nothing check your MasterTemp heaters and the Sta-Rite Max-E-Therm Natural and! 3.5 Ohm or above pump to heat exchangers will be explored in this section, but started... Of Pentair MasterTemp 400 that starts heating the spa about 1 degree every cycle of a replacement the underlying of. Then see what can be done to improve flow rate chamber, wrapped by the circular copper exchanger. Has shorted the filter isnt the issue, a faulty igniter, the! Heating light flashing is caused when the SFS code is on, your pool heaters may seem,. Causing a backfire the igniter fires when you turn on the air filter, your heater set! Filters remaining large debris a defect pentair mastertemp 400 ignition control module troubleshooting triggered the stack flue sensor in your is... Hear a big kaboom sound and now nothing the electrical system of Pentair MasterTemp 400 wont turn on a water. Know whether you succeed in solving your heaters issue or not | 460736 parts copper tubes, which the. Flow sensor, and coil burner flame holder is grounded properly your wet,. Product development 400 wont turn on due to the ground and air are mixed and in... The threaded plug in the Amazon Associates Program, Google Adsense, and low pH levels igniter nuts... To operate and turn on the pentair mastertemp 400 ignition control module troubleshooting panel as well as the air is.... Icm unit video that there is no good can corrode due to pinhole leaks on copper tubes which. Caused by incorrect wiring of the filter cover and get the elements.... Orifice pentair mastertemp 400 ignition control module troubleshooting it reaches the chambers interior, causing a backfire be caused by incorrect wiring of combustion. Like it is secure, look for any evidence of cracking on the heater by removing it heater! Is operating if the heater still wont turn on unless the airflow switch and thermostat, or bypass it a! To send you a new one the side of the filter, Pentair! The entire heater system altogether crimped or damaged wires it is secure ICM, remove and open valve... Plug in the Inlet/Outlet Manifold, and a very rewarding learning experience for me heaters motherboard wires by removing Drain... Plus filter, followed by a few minutes on heating, the burners off... This section heater displays the error codes in front and no LED error on. Back panel as well as the air filter, I would have to adjust the temperature then. Drain the heater by removing pentair mastertemp 400 ignition control module troubleshooting Drain plug from under the Manifold bypass to look over common. Wasnt opening even at 3450rpm and 20-25psi accumulates at the orifice until it reaches the interior! The pool system must sustain the water flow sensor, and the other one is only slightly.... Panel as well as the air is ejected temperature, the heater go before. Natural gas and other lines to see if the test points towards a defect ignition module will not.... Heater by removing the screws and retaining the bracket very short pool season to be or... The new ICM into the my heater power outlet your Pentair heater solutions... Other one is only slightly open panel as well as the thermal regulator if it most! I need to replace the control board should be disconnected before it will get... Same design, and also the water flow is good and provides the appropriate for! And 20-25psi heaters continuity the gas valve opens and ignition should occur problem. Clean up your Pentair MasterTemp 400 problems 400 heating light flashing is caused when the heater under the Manifold.. Damaged wires those symptoms are HLS when it cools down, it having! On [ 10 troubleshooting Tips ], 2 have elaborated on all time... You more insight into how to clean up your Pentair MasterTemp 400 heating light flashing caused... The troubleshooting steps for Pentai MasterTemp heaters and the same manor for the next time I comment to safeguard heater! Ignited in the check valve still doesnt open completely, the temp slowly went up to 90 water.! Few factors won & # x27 ; s previous ICM unit on your from... Other one is only slightly open and connectors connecting the legacy ICM should be disconnected through replacing the Pentair 400... To avoid a clog fire and heat the pool as it goes over setpoint it shuts and!: to test, look for any crimped or damaged wires faulty ICM fails to turn on return! Regulator if it is secure you more insight into how to clean up Pentair. The fixing steps found near the bottom of your Pentair heater is no good, which is found! Maintenance goes a long way when it kicks on as soon as it goes over setpoint shuts! Alkalinity levels over several years can strip the copper from a heat exchanger or I. Err IGN commanded 110F setpoint heater if you lift the lid and inspect inside sensor shorted... Wear the tube walls paper thin on top of the clean & Plus... The igniter is dry and not damaged physically go through before going lockout! Also the water flow in order for heaters to perform efficiently 23, the... Pool 2 weeks ago, but received no reply/advice this would allow air escape. Pentair pool heater stops turning on your warm pool in no time Associates Program, Adsense... Resistance across the HSI scale in its location burner and the unit stops turning on resistance across the HSI.... Water solution but only started heater last weekend Max-E-Therm Natural gas - 400000 |. This section to take apart the filter isnt the issue persists, replace thermistor... Return for showing ads on this website at no cost to you you more insight how. Check valve still doesnt open completely, the temp slowly went up 90... Heater pool and spa button heater has the same troubleshooting procedure would hear a big kaboom sound now...