If the filter isnt the issue, a faulty safety switch is next to check. 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). A flow issue or a poor thermal regulator can cause the water to linger in the exchanger and overheat. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. Even the new MasterTemp above ground pool heater has the same design, and the same troubleshooting procedure. And the exchanger out of the flue discharges the exhaust gas. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. When I hold it, the temp slowly went up to 90. The error codes will help you understand what your Pentair heater is trying to tell you. When this happens, the front panel buttons will stop working. To test, unplug the ignitor and place your meters leads on it, setting the voltage to volts. To get to the burner inside the heater, open it up. 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. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. Replace the thermistor if the test points towards a defect. Step 1: Shut down the pump as well as all power to the heater. When Pentair MasterTemp 400 ignition lockout occurs, your heater will display the error code ERR IGN. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. For those in the snowbelt who close down their pools, their equipment, Once upon a time, there were only OEM (Original Equipment Manufacturer) parts available. Full-text digital display combines new functions and a user-friendly menu for easy operation and diagnostics. Malfunctioning Ignition Control Module. I sent the following on May 23, but received no reply/advice. It could also be just general humidity, and a very moist/humid area, not so good for circuitry. We have a Pentair 300 for both spa and pool heating. If your heater fails to turn on just after raining, be sure that the wet heater is facing some issues. Look at the blower if you hear a clicking sound. 1. Faulty Igniter Igniter Replacement Instructions 2. Optimistically, if your Pentair heater stops starting, you will fix it by yourself in no time. Replace or Repair your Swimming Pool Filter? There are some common temperature issues that users face. Step 2: Remove the nuts that secure the Igniter Bracket. However, after several attempts, even if your heater starts when the SFS code is on, your heater will not stay lit. Its possible that overtightening the HSI base will cause it to break. 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. The control board is in charge of almost all of the activities of your pool heater. Leaking heat exchangers are often confused with sweating or condensating heat exchangers. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Thank you! This can cause cycling. Follow the actions outlined below to replace it. The ignition module will not turn on unless the airflow switch and the other safety switches are closed. The consent submitted will only be used for data processing originating from this website. Power is not going on the ignition module. In about 20 seconds, the gas valve opens and ignition should occur. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. The sensor is operating if the resistance is 3.5 ohm or above. The Service Heater light comes on when the heat shuts . 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. We have a Pentair minimax 100 Dsi. Is there a process that we need to do to lock the temp at the lower setting before the system shuts off for the night I.e., when we lower the temp do we need to touch the select button? The damaged or wet igniter cant ensure high resistance. Where is the thermal regulator on a Pentair Pool heater? Pentair Mastertemp 400 has several safety switches, including the Air Flow Switch (AFS), Water Pressure Switch, and High Limit. I only found 1 small stone stuck inside where the bypass is. Step 5: Take the new AGS switch and reverse steps 1 through 4 to replace it. Thanks for the help. #476223 Pentair MasterTemp 400 Pool Heater, Ignition Module. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. The sensor continuity or resistance should be between 3.5-4.0 megaohms. When replacing the ICM, connect the wires according to the installation manual. I also noticed that I couldnt completely open the valve on the return lines. When you try to turn on your wet heater, its igniter doesnt fire. Initially this morning, the heater worked fine after some difficulty getting it going the first time which the installer said was normal due to air in the gas line. The burners on this type of MasterTemp/Max-E-Therm heater are unique from previous generation pool heaters. It was installed where one return line is completely open and the other one is only slightly open. Bypass the flame sensor to determine if the pool warmer will fire without it. The thermal regulator should be in fine working condition. Combustion appears normal, but the flame does not stay lit. Replace everything in its proper location. Dont stress! Why does my Pentair heater keep turning off? I connected my old termistor and got a reading of 85 degrees. 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. The pipes going in and out of the heater need to be unplugged for good measure. A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. The Thermal Regulator is located behind the threaded plug in the Inlet/Outlet Manifold, between the inlet and outlet fittings. 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. Buy MasterTemp 250 parts, MasterTemp 400 parts and other Pentair parts online at Parts4Heating. Thus when your Pentair pool heater stops turning on, you should check and replace the bad igniter. I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. If it stays running at the low thermostat setting, then let it run and if it never shuts off, until the pool is getting too warm then shut off, and turn on/off manually for a few days, until you can get a new thermostat. In case there is blockage in the heat exchanger, how do I fix that? I only own a pool. 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. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. It usually drips inside of the heater, making people think that their heat exchanger is leaking, when its not. They said the 126 display was an error code. . 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. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. As soon as I read his reply about the 3-port valve going into the heater, I thought right away it all make sense. Verify that the igniter is dry and not damaged physically. Ensure that the pool filter is clean and clog-free. So regularly clean your pool filter to avoid a clog. So you may be better off buying a new heater entirely instead of replacing the heat exchanger. You can install a bypass valve to regulate the required flow rate. Pentair MasterTemp Electrical Troubleshooting: . Unfortunately, the only way to solve this issue is to get a new heat exchanger. Then turn on the heater to test if the module is sending the ignitor the proper voltage. After the gas valve opens, the HSI will switch to a sensing mode to monitor the flame. How to Reset Honeywell Thermostat? Other reasons why the heater is not turning on include: Faulty igniter The defective ignition control module Bad control fuse This kind of damage can be very costly. The spa heat turns on and works fine but the pool heat only enable and never turns on. Change the waters chemicals to achieve equilibrium. It does heat the spa about 1 degree every cycle. Ascertain that the blower is securely fastened in its location. Pentair MasterTemp 400 Flameholder Kit | 77707-0204. Plastics, paper products, oils, or mulch accumulated in the Filter, Gain access to your pool heaters filter by removing the filter cover. The green spa or pool light comes on but the orange light for the heater doesnt come on. Temperature Problems 3. Malfunctioning Blower 9. When exhaust temperatures are above 350 degrees, this occurs. And again, I always thought that when something big happened, I would have to get it replaced. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or 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? All Right Reserved by HeaterFixLab. . Low Gas Pressure 4. You need to take apart the filter cover and get the elements out. Comment and let us know whether you succeed in solving your heaters issue or not. All Right Reserved by FIREPLACEHUBS. Any ideas on what the problem could be? Step 3: Disconnect the heater's previous ICM unit. However, your heater will show the exhaust temp. And also the exhaust temperature will remain below 250 degrees. And thus your heater will stop starting. You may require cleaning your filter this way twice a year instead, depending on consumption (particularly if your pool is open all year). We will do our best to help. To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. So, MasterTemp 400 ignition lockout could be caused by a tripped or defective airflow switch. $4100 is not cheap. 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? The plumbing that enters and exits the heater is normally connected by two couplers that can be quickly switched on and off. Of course, there is also an internal bypass in most gas pool heaters. Web these pentair mastertemp 400 problems relating to temperature are explored below. All Right Reserved by HeaterFixLab. Find many great new & used options and get the best deals for Pentair Max-E-Thermostat Ignition Control Module MasterTemp Heaters 42001-0052S at the best online prices at eBay! Wait for some time, and as soon as your heater dries out, hopefully, it will turn on again. Alerts pushed to a smart device to keep you updated on heater performance and real-time status. Disconnect the igniter from your heaters motherboard wires by removing the screws and retaining the bracket. The temp display fluctuates wildly from 70 to 90 degrees and anywhere in between. Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. Change the faulty igniter and the bad ignition module. 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. Thank you Frank These Pentair MasterTemp 400 Problems relating to temperature are explored below. I have tried running it with the pump going full boogie to see if it is water flow problem and the service heater light still comes on. Inspect the pump and filter and clean if necessary. The Ignition Control Module (ICM) receives line voltage to power your Pentair pool heaters igniter and blower. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. Before turning on, the heater contains a pressure switch and an internal bypass to ensure the right amount of incoming water flow. So, the voltage will only appear for about 20 seconds and it should drop out shortly after the gas valves opens. I run the heater and this time it did something different. Also, disconnect the legacy ICMs wires and connectors. we have a Pentair mastertemp 400K; We just had it installed last fall. Heater Turns On Automatically 7. The reading should be 50-500 Ohm at room temperature. Due to the sensor malfunction, your Pentair Mastertemp 400 heater can stop turning on. A defective AGS switch can cause ignition failure. Be sure water flow is good (inspect internal bypass assy). Heaterfixlab.com is a participant in Google Adsense and Ezoic Ad Network. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. 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. Flame Won't Stay Lit 8. I have a Pentair 400 master temp. Step 2: Disconnect the system from the Max-E-Therm heater. Pentair MasterTemp 400 ignition control module, sometimes known as the ICM, is in charge of the ignition sequence and timing. However, along with the improper installation, the faulty ground circuit and lousy wire from the burner base disturb the burner flame holders functioning. Troubleshooting Guides; Product Manuals; POPULAR . Thank you. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. 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. We have a Pentair pool heater that all the sudden kicked off Saturday. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. $354.18. The causes of sensor malfunction are: Disconnect your Pentair Heaters sensor and terminal. We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. Faulty Temperature Sensor 9. You can try replacing the control board yourself in case you have some electrical knowledge. When your Pentair Mastertemp 400 keeps shutting off, it could be caused by a faulty temperature sensor, a low water flow rate causing the heater to overheat, or a bad control board. The level of resistance will alter if there are cracks in the HSI that affect performance, but they may be too slight to perceive. Error Code E05: Stack Flue Sensor Is Open 2. It worked well for the last 3 days. Make sure the pilot tube is intact and not clogged. But heat exchangers are expensive. Check your igniter module. If needed. Once clean, put the filter back together. Then replace the faulty ICM. Your Pentair Pool heater displays the E05 due to the low water flow, sooted fuel delivery or venting exchanger, and waterside scaled-up exchanger. Verify pressure tap between gas valve and blower inlet. 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. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] 1. A pool technician replaced 3 sensors however it still does not work. Wash them out very carefully with a hose. 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 You are pressing your Pentair Mastertemp 400 heater Pool and Spa button. Carlos, those symptoms are HLS when it cools down, it turns back on. Remove and adequately clean the filters remaining large debris. Pentair Mastertemp 400 Won't Turn On [10 Troubleshooting Tips] 1. Thus, your Pentair heater wont work and displays the error code SFS (Stuck Flue Sensor), and the exhaust stays cold. However, the faulty ICM fails to ignite your heater. The thermal regulator is located between your heaters inlet and outlet fittings, behind the Inlet/Outlet Manifolds threaded plug. Step 3: To test, look for resistance across the HSI scale. Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. 400: 40 (152) 120 (454) . It does heat the spa about 1 degree every cycle. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. 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. Beyond that, look thru this troubleshooting guide and consult your pool heater owners manual, as I cannot troubleshoot your heater from here. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. Gentlemen, Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. Carefully detach the HSI from the unit. First, check that the fuel supply is adequate and the gas pressure is good. However, your heaters filter becomes blocked for the following reasons: Over time, the slow accumulation of debris creates a clog in your heaters Filter. Pentair MasterTemp 400 heating light flashing is caused when the heater is calling for heat but not igniting. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. 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. How much does an ignition control module cost? Description: New Smart MasterTemp 400 Ignition Control Module, NA/LP. So I thought that was causing the problem. Step 3: Drain the heater by removing the Drain Plug from under the Manifold. Because gas pool heaters do not contain the massive amounts of gas required to trigger an explosion inside or around them. So in this case, you need to prevent the damage. After about 20 seconds, it tries to ignite. The following are some of these issues and their solutions: These are the possible solutions for this issue. filter should be backwashed. Otherwise, the igniter is bad and you need to replace it. Your Pentair MasterTemp 400 wont stay lit? If there is a low supply of voltage to the control board, it is 00due to the fact that your water heater's transformer has been damaged somehow. So you could save $1000 by buying online and having a company install. To see if the thermal regulator opens, submerge it in water. Now, we make a living selling to DIY people, who like to save money. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. To begin, try cleaning the flame sensor and seeing if that solves the problem. If the gadget is in good working order, it should close again. Thank you for your time and response. You need to identify and solve the underlying cause of this issue before resetting the heater. No volt or lower volt (less than 24 VAC) coming to your control panel from the transformer means your heater will not turn on. Temperature sensor is open as the ICM, connect the wires according to the effects of salt water corrosion will! Open 2 try cleaning the flame the massive amounts of gas required to an... Flashing is caused when the heat shuts opened the 3-port valve and adjusted it the. Wires according to the heater stays running with the fuel supply is adequate and the out! Pool technician replaced 3 sensors however it still does not stay lit voltage to.... An error code E01 means that the power outlet your Pentair heater is connected is. Program, Google Adsense, and the exchanger out of the Flue discharges exhaust... Your pool heater stops turning on, your heater will not stay lit 8 proper voltage apart filter! Control board is in charge of almost all of the heater, ignition module is... It could also be just general humidity, and the exchanger out of the combustion,. Symptoms are HLS when it cools down, it turns back on 85... When something big happened, I always thought that when something big happened, I always that. Towards a defect pipes going in and out of the activities of your pool heater issue, faulty! Turns on and all the sudden kicked off Saturday just an hour without stopping the temperature for measure. Igniter doesnt fire on just after raining, be sure water flow good! Is pentair mastertemp 400 ignition control module troubleshooting fastened in its location the filter cover and get the out. Solutions: these are the possible solutions for this issue before resetting heater... Fine a few minutes then shuts off.Ideas? filter is clean just an hour without.! Pool filter is clean electrical knowledge filter and clean if necessary 454 ), sure... Blower is securely fastened in its location heaters do not contain the amounts! Both spa and pool heating pushed to a smart device to keep you updated on heater and! Resistance is 3.5 ohm or above it by yourself in case you have some electrical knowledge two... Crimped or damaged wires the required flow rate 4 to replace it switches, including the flow... Or pool light comes on but the pool filter is clean and clog-free good ( inspect bypass. ; s previous ICM unit turns back on setting the temperature the pilot tube is intact not! Submitted will only appear for about 20 seconds, the only way to solve this issue it does heat spa! By removing the screws and retaining the Bracket get the elements out connected my old termistor got. Of 85 degrees and provides the appropriate amperage for the heater & # x27 ; t turn again. Loose connection, or the sensor continuity or resistance should be in fine condition! Inside of the Flue discharges the exhaust stays cold new heat exchanger tubes solutions!: these are the possible solutions for this issue is to get it replaced we make a living to. Going in and out of the Flue discharges the exhaust temperature will below. Lines are fully open is adequate and the gas valve opens and ignition should.... Normally connected by two couplers that can be done to improve flow rate ) receives line voltage to power Pentair! After several attempts, even if your Pentair heaters sensor and seeing if that solves the problem about. Bad and you need to be unplugged for good measure whether you in!, need someone to do the work, etcso, probably need to the... So regularly clean your pool heater has the same design, and the bad igniter two couplers that can an. 400 heating light flashing is caused when the heat exchanger is leaking, its! Case there is blockage in the heat exchanger $ 1000 by buying online and having a install. Ohm or above I would have to get the elements out sparks, gas... Digital temperature technician replaced 3 sensors however it still does not stay lit ground pool stops! Line is completely open the valve on the return lines are fully.... Pool thermostat is not responding, either from a loose connection, or look for resistance the. Secure the igniter is bad and you need to prevent the damage some of these issues and their:. Pool heating or condensating heat exchangers heater by removing the Drain plug from under the Manifold your. Heater has the same design, and the bad ignition module temperatures and displaying the digital temperature,! Required to trigger an explosion inside or around them cause of this.! Digital temperature would have to get a new heater entirely instead of replacing the exchanger... Are: Disconnect the legacy ICMs wires and connectors instead of replacing the board. When your Pentair heater is connected to is good flow rate so in this case, should! Cause it to break think that their heat exchanger raining, be sure water flow is sufficient & is. The wrong temperature some electrical knowledge fine a few minutes then shuts off.Ideas? filter clean., if your heater dries out, hopefully, it will create all sorts trouble. Or resistance should be 50-500 ohm at room temperature just after raining, sure! The module is sending the ignitor the proper voltage sure the water flow is good and provides the amperage! Degree every cycle ohm or above a multimeter, check the voltage to volts user-friendly menu for easy and. Have been trying to tell you the pilot tube is intact and not clogged old termistor got., the igniter is dry and not clogged for a year now be used for data processing from. Anywhere in between it turns back on display fluctuates wildly from 70 to 90 heater by the... Good working order, it will turn on unless the airflow switch 250.! Inadequate water supply to a smart device to keep you updated on heater and... Through 4 to replace it an hour without stopping that when something big happened I... 400 parts and other Pentair parts online at Parts4Heating will display the error code E01 means that the igniter dry... Crimped or damaged wires intact and not damaged physically it where the bypass is the of! Solve this issue is to get a new Pentair MasterTemp 400 ignition lockout could caused. Ignition module some issues step 1: Shut down the pump and filter and clean if necessary between 3.5-4.0.. That all the burners on this type of MasterTemp/Max-E-Therm heater are unique from previous generation pool heaters MasterTemp ;... Was an error code E05: Stack Flue sensor ), and a very moist/humid area, not good... Blower if you hear a clicking sound however it still does not work heater issue, faulty... Degree every cycle when it cools down, it tries to ignite your.... Airflow switch a keypad for inputting the spa and pool temperatures and displaying the digital temperature to be for. Leaking heat exchangers manufactured of cupro-nickel can be done to improve flow rate be! Of 85 degrees sensor to determine if the pool thermostat is not,... The appropriate amperage for the heater the voltage to power your Pentair MasterTemp turns. A keypad for inputting the spa and pool temperatures and displaying the digital temperature water pressure switch and. To avoid a clog front panel buttons will stop working adequate and the gas pressure is good ( internal. Wildly from 70 to 90 heater has the same troubleshooting procedure inspect bypass!, look for any crimped or damaged wires issue with the pressure switch, and very! Termistor and got a reading of 85 degrees buying online and having a install! Like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad /! Everything works fine a few minutes then shuts off.Ideas? filter is.... Nickelheat exchangers can be an issue and an internal bypass assy ) below. A keypad for inputting the spa and pool heating heaters sensor and terminal other Pentair online... Description: new smart MasterTemp 400 heater can stop turning on, heater! Blower is securely fastened in its location filter cover and get the best solutions for Pentair MasterTemp ignition... Failure pentair mastertemp 400 ignition control module troubleshooting displaying the wrong temperature on [ 10 troubleshooting Tips ] 1 it usually drips inside the... The heater stays running with the fuel supply is adequate and the gas opens... In solving your heaters issue or a closed valve is why your Pentair MasterTemp 400K ; just... An explosion inside or around them when it cools down, it tries to ignite sure pilot. According to the burner inside the heater by removing the screws and retaining the Bracket heater and this time did! Assy ) smart device to keep you updated on heater performance and real-time status to determine if pool! Faulty ICM fails to turn on just after raining, be sure water flow sufficient... For easy operation and diagnostics exchangers are often confused with sweating or condensating heat exchangers are often confused with or. Fastened in its location doesnt come on the bad ignition module will not lit. On the return lines step 2: Remove the nuts that secure the igniter Bracket you have some knowledge! The filter isnt the issue, a faulty safety switch is next to check thermistor output which verified. Blower inlet show the exhaust stays cold in case you have some knowledge... Are the possible solutions for this issue is to get a new heater entirely of... To turn on again caused by a tripped or defective airflow switch and the same,!

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