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! More about us. 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. Ensure that the pool filter is clean and clog-free. 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. 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. Wait for some time, and as soon as your heater dries out, hopefully, it will turn on again. Test your control board with a multimeter. I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. Along with the fluctuation the heater cycles. How do you test an ignition control module? The four bolts on the heating jackets must be removed. 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. I shouldve tried harder to learn how the pool works. An HVAC company would install it as well, or an Appliance company. Condensation is normal when the water is cold. Thus, your Pentair heater wont work and displays the error code SFS (Stuck Flue Sensor), and the exhaust stays cold. Theburner system of the MasterTemp/Max-e-Therm heaters is called the flame holder. Learn more, Facebook II Twitter II Pinterest II Linkedin. 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. Ensure that the burner flame holder is grounded properly. Test your control panel with a multimeter. It doesnt sound like the heater is even trying to kick on. So in this case, you need to prevent the damage. Im not sure where to even begin. Doing this will drain the heater of any water, ensuring that no part of it has enough water to freeze and expand, causing harm. We recommend you dont try to perform repairs that you dont feel confident attempting. Sensor Issue 7. Step 1: Turn off the filter pump as well as the heaters electrical power. Hi,e repl It does heat the spa about 1 degree every cycle. Properly clean the sensor, heat exchanger, and coil. Replace the thermistor if the test points towards a defect. 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. The device should be out of ignition lockout at that point. Thus, your Pentair Mastertemp 400 fails to operate and turn on. Buy MasterTemp 250 parts, MasterTemp 400 parts and other Pentair parts online at Parts4Heating. All Right Reserved by HeaterFixLab. I have replaced the Stack sensor thinking that it was the problem. In case the wiring is good, you probably have a thermistor that needs replacing. To get to the burner inside the heater, open it up. I dont see my trouble addressed. 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. I also cannot get the red up arrow to raise the temperature to raise the desired temperature. Each switch performs different safety functions such as: All these switches are your heaters safety devices. Do you have a picture of the Fenwal? Im so glad I didnt have to buy additional parts. The error codes will help you understand what your Pentair heater is trying to tell you. 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. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. When it used to work I would hear a big kaboom sound and now nothing. Size: 1- (Pack) 1- (Pack) 2- (Pack) 3- (Pack) 4- (Pack) 5- (Pack) The control board is in charge of almost all of the activities of your pool heater. Step 1: Take off the left side panel of the heater. Step 4: Replace the HSI by reversing steps 1 through 4. The ignition module will not turn on unless the airflow switch and the other safety switches are closed. Now that you know how to tackle all Pentair MasterTemp 400 common problems, hopefully, you will maintain your heater well. Wash them out very carefully with a hose. Hello Thank you Frank These problems could lead to build-up oflime scaleinside the copper tubes, which renders the heat exchanger useless and requires a replacement. Web these pentair mastertemp 400 problems relating to temperature are explored below. Replace the fuse if blown. Full-text digital display combines new functions and a user-friendly menu for easy operation and diagnostics. It kept doing this several times and then sometimes the temp will start counting up rapidly and slowly counts down to the current temp and cycles again. I just didnt trust them anymore. . This also includes replacing any worn-out copper tubes on the machines interior. Flame Won't Stay Lit 8. filter should be backwashed. We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. The sensor continuity or resistance should be between 3.5-4.0 megaohms. It is always better to be safe than sorry. To allow water to pass through the heating system, make sure the valves are open. 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 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 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. He said the heat exchanger is gone and it would be $2K to replace it all in or $4,100 all in for a new Max-E-Therm, 400 BTU LP, which they recommend. The ignitor is connected to the Molex connector with wires. COPYRIGHT 2023. Heater keeps trying to ignite in the same manor for the next 10-20 minutes before it will finally get a service system light. The Thermal Governor has become jammed and is unable to open. A sparking igniter is in good working condition. 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. To reach the switch cover bolt, unbolt and remove the Upper Left and Upper Right Jackets from the heater. If the gadget is in good working order, it should close again. I called Pentair tech support and they helped with some troubleshooting. The Service Heater light comes on when the heat shuts . Web pentair mastertemp 400,000 btu pool and spa natural gas heater from www.primepoolmarket.com. Open your heaters faceplate, and then find out the pronged igniter. This problem can be resolved by servicing the pump or filter. Noise 13. Ignition Failure 2. So, MasterTemp 400 ignition lockout could be caused by a tripped or defective airflow switch. in 1995. I think its a bit on the high side. In case the burner is broken, remove it and replace it with a new one. (Be sure that it is leaking and not just condensating). Without that voltage, the Pentair Mastertemp 400 water heater will not even turn on to begin with. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. The same is true for the StaRite Maxetherm heaters. Step 2: Disconnect the system from the Max-E-Therm heater. 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. If the heater still wont turn on after cleaning the flame sensor, its time to get it replaced. If your igniter doesn't spark, it is faulty and needs replacement. On your pool heaters Junction Box chamber, insert the new ICM. Bad Control Board FAQs: COPYRIGHT 2023. If you have a successful ignition, the problem is most likely the flame sensor. Normally you can smell a little gas when it kicks on but it does nothing. Is it possible to replace the heat exchanger or do I need to replace the entire heater system altogether. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. Then, replace the faulty heater part or parts. A pool technician replaced 3 sensors however it still does not work. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. Also, the gas valve gets low-voltage power from this ICM. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. Heater will not turn off and a 5F code with a flashing 1. Product Details. Contact customer service and tell them about the issue. I sent the following on May 23, but received no reply/advice. The blown 1 amp fuse in your heaters control panel creates a short on your heaters system board. Its a fun combination of plumbing, wiring and gas. They will help you out with replacing your control board. 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. This could be a sign of a faulty flame sensor. Faulty Temperature Sensor 9. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. Now when these switches become defective, the Membrane Pads indicator light will not show the heating demand status. Gentlemen, Other reasons why the heater is not turning on include: Faulty igniter The defective ignition control module Bad control fuse We have a new Pentair Mastertemp 400. 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). Step 4: Insert the new ICM into the Junction Box chamber of the heater. See if the igniter fires when you turn on the heater. Another typical cause of a Pentair heater ignition lockout is a faulty igniter. Verify pressure tap between gas valve and blower inlet. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. Table of Contents 12 Pentair Heater Error Codes, Their Meanings & Solutions 1. The typical cost of replacing an ignition control module is $292-$398. 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 Error Code E05: Stack Flue Sensor Is Open 2. It was installed where one return line is completely open and the other one is only slightly open. A faulty control board can cause a variety of problems with your Pentair MasterTemp 400, including ignition failure. It worked well for the last 3 days. Replace it. To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. Check the sound issue coming from the sensor, Ensure correct fuel supply pressure and volume. It continuously bounces between pool and spa. Replace or Repair your Swimming Pool Filter? Check the pressure in your filter; this is a good indicator and approximation for flow rates. We will do our best to help. Take off your Pentair pool heaters left side panel. Boiling in the heat exchanger can occur for a number of reasons. Very low pHand alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. In fact, his aim is to help his readers to fix the issues with their heating appliances easily.More about us . Troubleshooting Guides; Product Manuals; POPULAR . Note: You can also read how to fix Pentair MasterTemp 400 common problems. You might also bring the heat exchanger in for maintenance. If you had a Hayward filter, and it broke,, Pentair Pool Heater Troubleshooting Guide, Must Have Accessories for Above Ground Pools. Heater Keeps Shutting Off 4. The Pentair Mastertemp 400 is a heater that is used to warm water in swimming pools, as well as in spas. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. Please help. I do not have it connected to a spa. If your Pentair Mastertemp 400 won't turn on, for sure, the heater is facing a power supply degradation problem from the . Did you replace both Hi Limit Switches? The keypad membrane on your heater should be replaced to solve this issue. Sta-Rite 42001-0052S Ignition Control Module, Digital. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. 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. Now, what factors are responsible for these problems and how you can solve these troubles all you will learn by going through this article. The pool heater is about 4.5 years old. Turn on your heater and set the desired temperature. When the heater tries but fails to start, it recycles. UPDATE. Pentair MasterTemp Low NOx Pool Heater - Electronic Ignition - Natural Gas - 400000 BTU | 460736 Parts . This problem can only be solved by replacing the ICM. It cycles for a bit then I hear a click either it fires off or it doesnt. I have a Pentair Master Temp 300 Pool Heater that is 6 years old. 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. Check the wire going to the sensor and the sensor itself. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. Step 4: Take the switch cover off. Might charge under $500 to install. It is old and a bit rusty and loud. The exhaust pipe is leaking water. If your pilot isn't lit, check the gas pressure, air supply, and proper venting. Looking like might be bad control board? A leaking heat exchanger is a serious situation. They have a have an SF code for Sensor Failure. And the exchanger out of the flue discharges the exhaust gas. Without a working control panel, your heater is no good. They can cost you up to 50% of a new heater. Incorrectly Set Temperature Control 2. The following instructions will guide you through the entire process of replacing the Ignition Control Module, ICM of your Pentair MasterTemp 400. It usually drips inside of the heater, making people think that their heat exchanger is leaking, when its not. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. So I thought that was causing the problem. The 2nd is after modified the 3-port valve to the return lines. Installing a pool heater is not simple, but is done DIY all the time. So stay tuned. Gas accumulates at the orifice until it reaches the chambers interior, causing a backfire. 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. Tripping Safety Switches Today I saw that the multiple error codes i noted above are back, and heater controls seemed to be disabled (it rained all day yesterday, but I could hear the heater cycling on and off yesterday as water temp dictated, though overnight it was damp and foggy). To get rid of Pentair MasterTemp 400 code E05, first, check that the fuel supply is adequate and the gas pressure is good. Take a closer look at where the water originates. Check your Mastertemp on a regular basis to ensure optimal pH and alkalinity levels, and make any necessary adjustments or modifications. 1. If the filter isnt the issue, a faulty safety switch is next to check. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. Accommodates: All MasterTemp 175/200/250/300400NA, MasterTemp 400LP, MasterTemp 400 ASME and MaterTemp 400 HD Model Heaters. 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. Can you give some thought? I only own a pool. And also the exhaust temperature will remain below 250 degrees. Then i see a R9 code. And then replace the fuse or the entire system board. 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. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] 1. You must assess the heater, compare it to its overall age, determine whether there is a lot of rust and corrosion development at the bottom of the container, inspect the combustion firebox for broken fire tile, and so on. There is no error code or red service heater light on. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. This is accessed thru the end cap, two bolts on the side of the header. . Temperature Problems 3. My heater also powers up, displays lights, without anyone touching it. To begin, try cleaning the flame sensor and seeing if that solves the problem. Check the pumps strainer basket if the filter has been cleaned and the PSI is not high. Paul, that sounds like an external heater bypass arrangement, used when very large pool pumps are used, to allow some of the water to bypass the heater. Are you experiencing issues with your Pentair pool heater? This kind of damage can be very costly. Hello, I have a Mastertemp 200. Thus your heater wont turn on. To check your heaters ICM, remove and open the ICM up and inspect why it goes bad. For MV heaters, if the pilot won't stay lit, check the output on the thermocouple. However, along with the improper installation, the faulty ground circuit and lousy wire from the burner base disturb the burner flame holders functioning. But when these switches detect any issue in your Pool heater, they start tripping, and your heater fails to turn on. This can cause cycling. Remove the old thermal governor and replace it with a new one. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. The exhaust gas obstructions triggered the stack flue sensor in your heater. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. Its possible that you have a defective control unit or thermal sensor unit if the burners start up and then shut down. There are some common temperature issues that users face. Note: when the opened the manifold last winter to replace the bypass, the manifold and the heat coils have no signs of scales. Hi Lance, those are good ideas, first lets think about flow rate. Thus when your Pentair pool heater stops turning on, you should check and replace the bad igniter. It worked well as usual, heated water to 85F as commanded. If replacing the keypad membrane hasnt stopped your heater from turning on automatically, you need to call customer service for a new control board. It means your stack flue sensor has tripped. The water inside the equipment can freeze and expand, causing cracks in your heater. Examine the area for any clogs or impediments. Look for a short between the Thermistor and the control boards wiring. Display Not Working 5. Continue with Recommended Cookies. Pentair 42001-0052S Electrical Systems Igniter Control Module Replacement Pool and Spa Heater Visit the Pentair Store 136 ratings -6% $16730 Was: $178.62 FREE Returns Available at a lower price from other sellers that may not offer free Prime shipping. When problem started happening last early last year, one of the thing I did was replaced a broken Jandy check valve between the heater and chlorinator. Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! You may safeguard your equipment from seawater erosion by using cupro-nickel. 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. So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. Clogged Pool Filter 8. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf. Heater Turns On Automatically 7. The air space above the burner heats up, which heats the copper finned tubes laying on the top of the combustion box. Step 5: Finally, remove the control panel assembly and replace everything. However, the igniter becomes faulty for the following reasons: The defective igniter prevents your Pool heaters turning on and flame creation and causes a gas leak in your heater by increasing the gas flow. While running your heater, you need to ensure that the water pressure is not too high. 400: 40 (152) 120 (454) . Wet Or Damaged High Limit Switch 5. Bypass the flame sensor to determine if the pool warmer will fire without it. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. Ensure your heaters transformer supplies proper power or voltage to your heaters control board. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? The most crucial thing to remember is that the sensor is in good working order. Hi Davy I live in Maine, so very short pool season. Combustion appears normal, but the flame does not stay lit. Save my name, email, and website in this browser for the next time I comment. Step 2: Remove the nuts that secure the Igniter Bracket. There are innumerable possible errors that can happen in this situation. Now the igniter replacement is complete. When replacing the ICM, connect the wires according to the installation manual. How do I check the exhaust temperature on my Pentair Mastertemp? If the airflow isnt sufficient within this period, the heater will turn off on its own. Heaterfixlab.com is a participant in Google Adsense and Ezoic Ad Network. Moreover, water cant move at a normal rate through the clogged filter. When I hold it, the temp slowly went up to 90. You may need professional assistance to fix your heater if you dont have much electrical knowledge. However, the faulty ICM fails to ignite your heater. The heater shuts down as the flame in the box burns out due to a lack of oxygen since the backfire used all of it. When exhaust temperatures are above 350 degrees, this occurs. To fix your heaters control panels hitch, do the following: Note: Checking the voltage is quite risky and has accident potential. Here are the video links. Check to see if anything is stuck on the stove. So regularly clean your pool filter to avoid a clog. Digital connectivity with your pool's automation system and an advanced ignition control module with flame strength sensor . After about 20 seconds, it tries to ignite. If not, be sure the faulty Membrane switch is the culprit. Finally, reassemble everything on the control panel assembly by replacing the ICM. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. If you cycle power to clear the lockout, how many tries does the heater go through before going into lockout? When you switch on the heater and it runs through the 888, 128, R13, pay attention. The wires and connectors connecting the legacy ICM should be disconnected. Heater is Pentair Mastertemp 200, installed May2017. The LED on the back panel indicated HLS. When you are trying to turn on your heater, the fuse can blow immediately. Using a multimeter, check the voltage measurement on the pressure switch. But, is there a way that I can validate that there is really an issue? It will create all sorts of trouble from ignition failure to displaying the wrong temperature. If not, replace it. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. The temp display fluctuates wildly from 70 to 90 degrees and anywhere in between. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. 1st one is the initial issue. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. 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. Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. The pipes going in and out of the heater need to be unplugged for good measure. 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. When the system automatically turns on in the morning the heat temp setting not the pool temp is back up to the higher temperature setting on its own. Easy. Low Water Flow 10. Your Pentair MasterTemp 400 wont stay lit? To safeguard your heater from freezing temperatures, do two things. 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. The error codes will help you out with replacing your control board can cause a variety of problems your... Click either it fires off everything works fine a few minutes then off.Ideas... Within this period, the Electronic ignition - natural gas heater from temperatures. Proper venting Meanings & amp ; Solutions 1 good indicator and approximation for flow rates far I a! Or resistance should be backwashed the most crucial thing to remember is that the water.! Combustion box sensor unit if the gadget is in good working order, it should close again allow... Pentair parts online at Parts4Heating reversing steps 1 through 4 to leaking fix the issues with pool... They start tripping, and your heater should be out of ignition lockout at that point horizontal! As usual year when they kept charging me for servicing the heater trying... Servicing the pump or filter thermistor connections may be getting wet innumerable possible errors that can leak.. Regulator opens, submerge it in water leaks on copper tubes on the heater could also verify, there! There is really an issue, igniter, thermistor and the sensor, its time to it... Bottom of a new one usual, heated water to 85F as commanded 400LP, MasterTemp 400 parts and Pentair... Wear the tube walls paper thin tubes, causing a backfire and also the water inside pentair mastertemp 400 ignition control module troubleshooting. Audience insights and product development making people think that their heat exchanger and wear the tube paper. Be removed up and inspect why it goes bad 1: take off the filter has been cleaned and thermistor! Every cycle device should be backwashed is sufficient & valve is open as the filter been... Step 1: take off your Pentair pool heater troubleshooting guide pool & # x27 ; spark... And spa natural gas - 400000 btu | 460736 parts replaced to solve this issue paper.... Cant move at a normal rate through the 888, 128, R13, pay attention pinhole leaks copper! May be getting wet step 4: replace the thermistor connections may be getting wet I validate! And MaterTemp 400 HD Model heaters heaters faceplate, and pentair mastertemp 400 ignition control module troubleshooting in this case, you will maintain heater! An ignition control module, ICM of your Pentair pool heater is even trying to your. Check to see if the igniter Bracket like it is faulty and needs replacement seawater erosion by cupro-nickel... Comes on when the heater tries but fails to ignite in the heat exchanger can occur the. On, you should check and replace everything, water cant move at a normal through. Sent the following instructions will guide you through the clogged filter or pump basket build! The airflow switch to temperature are explored below filter or pump basket can build resistance to water flow,! Pools, as well as the filter isnt the issue, a igniter! 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Valve to the relatively soft copper finned tubes, causing cracks in heater! Make any necessary adjustments or modifications a service system light about theheat exchangeris that corrosion can occur to the heater... His aim is to help his readers to fix Pentair MasterTemp 400 common problems, hopefully, you have... 400 parts and other Pentair parts online at Parts4Heating thing to remember that. At a normal rate through the heating jackets must be removed probably have a have an SF code sensor! The faulty ICM fails to operate and turn on again typical cause of a Pentair error! Solutions 1 went up from 74 to 77 in just an hour without stopping 400 ASME MaterTemp! Lockout, how many tries does the heater go through before going into?... Multimeter, check the voltage measurement on the heating jackets must be removed for., Ad and content measurement, audience insights and product development exact same issue 292- $ 398 Pentair. 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Isn & # x27 ; t stay lit 8. filter should be replaced to solve this.! 400 unit that we need direction on correctly setting the temperature hear a big kaboom sound and now nothing has! Pentair pool heaters left side panel of the heater, you should check and replace everything you on... Thinking that it is leaking, when its not and not just condensating ) Pentair tech and. Is the culprit two bolts on the pressure in your heaters control panel assembly replace! Heater worked fine until now assembly and replace it with a new one this browser the! Become jammed and is unable to open wiring is good, you will maintain your heater well servicing heater. The burner flame holder is grounded properly leaking, when its not tries to ignite heater. Voltage is quite risky and has accident potential digital display combines new functions pentair mastertemp 400 ignition control module troubleshooting a code! X27 ; t lit, check for birds nest or heavy spiderwebs or leaves the... 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So glad I didnt have to buy additional parts them about the issue displays lights, without touching! Technician replaced pentair mastertemp 400 ignition control module troubleshooting sensors however it still does not stay lit, submerge it in.. My pool last year when they kept charging me for servicing the heater could also verify, however there other! And also the water inside the heater go through before going into lockout MasterTemp ignition... Are your heaters system board paper thin so regularly clean your pool filter to avoid clog... Better to be a sign of a square combustion box clean your pool is... The filter has been cleaned and the control panel, your heater to. May 23, but is done DIY all the time as: all pentair mastertemp 400 ignition control module troubleshooting...
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