Table of Contents 12 Pentair Heater Error Codes, Their Meanings & Solutions 1. Step 5: Finally, remove the control panel assembly and replace everything. Frank. I shouldve tried harder to learn how the pool works. Make sure your heaters ignition control module is getting sufficient power. You need to take apart the filter cover and get the elements out. A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. This issue should be checked ASAP. Hello Disconnect the igniter from your heaters motherboard wires by removing the screws and retaining the bracket. . Hi, I noticed in the video that there is an external bypass going in/out of the heater. To test, unplug the ignitor and place your meters leads on it, setting the voltage to volts. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. The pump basket blockage or clogged filter causes water flow resistance. in 1995. When I hold it, the temp slowly went up to 90. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter. The sensor continuity or resistance should be between 3.5-4.0 megaohms. Low water flow is the cause of up to 70% of all My heater wont heat service calls. Please help. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. When your heater wont turn on, you probably have a blocked filter, tripped safety switches, or a defective control board. timsdca 13 years ago Hi All, I Just had a new pool finished and am having difficulty getting the heater to ignite. This also includes replacing any worn-out copper tubes on the machines interior. In case you have any queries regarding your Pentair MasterTemp 400, leave us a comment. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. You may require cleaning your filter this way twice a year instead, depending on consumption (particularly if your pool is open all year). Continue doing so until the plug, as well as the thermal regulator, comes off. . Turn off your pool heaters gas and electricity supply. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. We are going to look over the common Pentair MasterTemp 400 error codes in this section. Thank you Frank The other effective solutions are: Your Pentair Mastertemp 400 fails to turn on due to the faulty membrane switch. Any help would be greatly appreciated. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. (Seconds! Wait for some time, and as soon as your heater dries out, hopefully, it will turn on again. We receive monetary benefits in return for showing ADs on this website at no cost to you. Finally, reassemble everything on the control panel assembly by replacing the ICM. I replaced the HLS twice to no avail. Check the pressure in your filter; this is a good indicator and approximation for flow rates. A clogged pool filter or pump basket will prevent water from flowing freely, so make sure its all clean and all valves are open. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. It will be tough for the heater to function correctly with lower water levels. Error Code E05: Stack Flue Sensor Is Open 2. Ensure that the burner flame holder is grounded properly. 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. Malfunctioning Blower 9. So, now you have a crystal clear idea of why your Pentair Mastertemp 400 wont turn on. Sensor Issue 7. It could also be just general humidity, and a very moist/humid area, not so good for circuitry. Remove the old thermal governor and replace it with a new one. Defective Control Panel 11. Take off your Pentair pool heaters left side panel. How to Reset Honeywell Thermostat? The following instructions will guide you through the entire process of replacing the Ignition Control Module, ICM of your Pentair MasterTemp 400. Hello. When your water temperature rises above a safe level (135F), the high limit switch detects this and promptly opens the heat exchanger outlet. 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. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. Hi Lance, those are good ideas, first lets think about flow rate. Remove and adequately clean the filters remaining large debris. Display Not Working 5. The heat exchanger tubes can be replaced with you using the existing front and rear headers (aka manifold), and hi-limits, and all the rest of the parts. The LED on the back panel indicated HLS. It worked well for the last 3 days. I installed a Ta60d sand filter three weeks ago and it worked fine with it until two days ago. They have a have an SF code for Sensor Failure. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. So you could save $1000 by buying online and having a company install. . To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. If your control board is broken, you must replace it. Continue with Recommended Cookies. The Pool company said that it is probably condensation. If not, be sure the faulty Membrane switch is the culprit. Normally you can smell a little gas when it kicks on but it does nothing. For MV heaters, if the pilot won't stay lit, check the output on the thermocouple. Dont stress! When this happens, the front panel buttons will stop working. Flame Won't Stay Lit 8. This problem has a very basic and straightforward fix. Clean up all the flue sensor orifices to ensure there is no grime on them. 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. ******************************************************** 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. When you are trying to turn on your heater, the fuse can blow immediately. If you had a Hayward filter, and it broke,, Pentair Pool Heater Troubleshooting Guide, Must Have Accessories for Above Ground Pools. Check for corrosion on the Pentair MasterTemp 400 flame sensor. Be sure all connections are clean and tight. If the resistance is zero, the stack flue sensor needs to be replaced. 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. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. Here are the video links. Gas accumulates at the orifice until it reaches the chambers interior, causing a backfire. Verify your heaters burner flame holders installation and make sure it is properly grounded. The device should be out of ignition lockout at that point. Main engine troubleshooting - Why does the engine not start? Full-text digital display combines new functions and a user-friendly menu for easy operation and diagnostics. We have a new Pentair Mastertemp 400. And thus your Pentair Mastertemp 400 stops turning on. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Learn more about pool care and repair. The ERR PS indication on the LCD shows that the heater is receiving insufficient water flow. 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. Verify that the igniter is dry and not damaged physically. Save my name, email, and website in this browser for the next time I comment. This error code means that the stack flue sensor is open. You can test the thermal regulators continuity by removing it. This kind of damage can be very costly. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. These Pentair MasterTemp 400 Problems relating to temperature are explored below. 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 heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. Thank you for your time and response. How do I check the exhaust temperature on my Pentair Mastertemp? The airflow switch is factory set and attached to the ignition module. Replace ignition or control module. How do you test an ignition control module? Save my name, email, and website in this browser for the next time I comment. Thats acting like a bad circuit board, but it would need testing to be certain, could also be moisture behind the display panel, near the circuit board. I have a MasterTemp 200. I replaced the thermistor and still have the same problem. Burner pulsates or surges, especially on ignition. This Digital Module Ignition Control Is Designed To Use With Minimax Nt Std, Ln Pool And Spa Heater With Ddtc Controller Models 200, 250, 300, 400 ; Digital Module Ignition Control Replacement ; Fits Minimax Nt Std, Ln Pool And Spa Heater With Ddtc Controller Models 200, 250, 300, 400 ; Country Of Origin: Taiwan, Province Of China (Be sure that it is leaking and not just condensating). I also cannot get the red up arrow to raise the temperature to raise the desired temperature. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. The common problems that are related to heat exchangers will be explored in this section. Turn on your heater and set the desired temperature. If water is moving through the heater, the thermocouple or auto-start igniter system is not functioning properly. SFS is stack flue sensor. Although, theres strong water coming out of the 2 return lines. Examine the area for any clogs or impediments. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. Im not sure where to even begin. Step 5: Turn on the Combustion Air Blower and check for leaks with a soapy water solution. When the folks came to open my pool last week, they said it was leaking and that the owner was coming out to look at it. Check for wet or damaged igniter with low resistance to ground. Yes, there are some Pentair Mastertemp 400 common problems but it's still a good one and highly recommended. Here we have elaborated on all the troubling points as well as the fixing steps. If the pump is running, its likely that the filter and/or skimmers need to be cleansed. 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. Your heater light may be blinking because of a failed ICM. Advice? Your Pentair MasterTemp 400 wont stay lit? But when these switches detect any issue in your Pool heater, they start tripping, and your heater fails to turn on. If needed. Wet Or Damaged High Limit Switch 5. filter. Is enough water getting into the heater? 1. Quantity: Following the Pentair Mastertemp 400 manual, connect the wires during your heaters ICM replacement. Kindly help. Replace in case necessary. Thus replace the malfunctioning or stuck Membrane Pad, Switch, and switchs damaged or bad wiring. Copyright 2022 In The Swim. Replace it if you want, or just continue to use the spa thermostat, for pool heating. The ignition system comes apart when the module fails. Even if your Pentair Masteramp heaters terminal board gets power, the heater wont turn on, which means the faulty fuse is creating an issue. Labor costs are projected to be between $57 and $71 per hour, with parts costing between $235 and $327 per hour. An example of data being processed may be a unique identifier stored in a cookie. Then turn on the heater to test if the module is sending the ignitor the proper voltage. Thank you! The controls and circuit boards for the Max-E-Therm and the MasterTemp are fairly identical. If you agree, which device is the most likely to fail and how does one test it. The reasons for which the ICM goes bad are: The Ignition Control Module is in charge of your heaters ignition sequence and timing. However, the faulty ICM fails to ignite your heater. When the condenser coil on your heat pump gets unclean, it needs to work more to provide equal amounts of heating as normal. Note: when the opened the manifold last winter to replace the bypass, the manifold and the heat coils have no signs of scales. Defective Membrane Switch 8. Also, your heater displays the error code ERR IGN. Carlos, those symptoms are HLS when it cools down, it turns back on. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. Replace the thermistor if the test points towards a defect. Step 2: Remove the nuts that secure the Igniter Bracket. Heater Keeps Shutting Off 4. I have replaced the Stack sensor thinking that it was the problem. Tripping Safety Switches The water circulating through the copper heat exchanger tubes absorbs the heat, and exits the heater a few degrees warmer than when it entered. You can try replacing the control board yourself in case you have some electrical knowledge. How do you test a Pentair stack flue sensor? There are some common temperature issues that users face. To check your heaters ICM, remove and open the ICM up and inspect why it goes bad. Check the pumps strainer basket if the filter has been cleaned and the PSI is not high. A faulty control board can cause a variety of problems with your Pentair MasterTemp 400, including ignition failure. But heat exchangers are expensive. Same issue continues. Its possible that overtightening the HSI base will cause it to break. 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. Another typical cause of a Pentair heater ignition lockout is a faulty igniter. 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. Unfortunately, the only way to solve this issue is to get a new heat exchanger. Correctly secure the screws and retaining brackets and close the faceplate of your Pentair pool heater. Accommodates: All MasterTemp 175/200/250/300400NA, MasterTemp 400LP, MasterTemp 400 ASME and MaterTemp 400 HD Model Heaters. How much does an ignition control module cost? COPYRIGHT 2023. Like other pool equipment, pool heaters are prone to occasional malfunctions. Also, disconnect the legacy ICMs wires and connectors. 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. I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. Otherwise, the igniter is bad and you need to replace it. Freeze Damage Work through the steps listed above and youll be cannonballing into your warm pool in no time. 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. Save my name, email, and website in this browser for the next time I comment. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. The reading should be 50-500 Ohm at room temperature. Pentair Mastertemp 400 ignition problem. Properly clean the sensor, heat exchanger, and coil. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. But, is there a way that I can validate that there is really an issue? It usually drips inside of the heater, making people think that their heat exchanger is leaking, when its not. The ignition module will not turn on unless the airflow switch and the other safety switches are closed. 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. 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. Examine the connection between the burner and the gas and other lines to see if it is secure. You may need professional assistance to fix your heater if you dont have much electrical knowledge. Bought the house 2.5 years ago. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. Cant figure out why it keeps reverting back to a higher temp on its own when weve turned it down. $294.34. Defective Ignition Control Module 7. A defective AGS switch can cause ignition failure. Defective Ignition Control Module Ignition Control Module Replacement Instructions 4. 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. You have a working thermal regulator if it opens. Get a new igniter, the same as the previous igniters part number. William is the founder of Fireplacehubs.com. And also the exhaust temperature will remain below 250 degrees. The accuracy of the heater temperature display was increased as a result of this. He has practical skills in fixing smoker & heating appliance issues. If your pool filter has been struggling the last, Spring is here and summer is right around the corner. Boiling in the heat exchanger can occur for a number of reasons. Troubleshooting Guides; Product Manuals; POPULAR . Fill a jar halfway with 130F water. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. It means your stack flue sensor has tripped. So be careful while tasting the transformers voltage. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. Check to see if anything is stuck on the stove. The thermal regulator is located between your heaters inlet and outlet fittings, behind the Inlet/Outlet Manifolds threaded plug. Thoughts? Check your igniter module. You are pressing your Pentair Mastertemp 400 heater Pool and Spa button. Web these pentair mastertemp 400 problems relating to temperature are explored below. Malfunctioning Ignition Control Module. Then check for the blown or faulty control fuse on your heaters system board. Even the new MasterTemp above ground pool heater has the same design, and the same troubleshooting procedure. we have a Pentair mastertemp 400K; We just had it installed last fall. The heater is only 3 yr old, just seems the erratic behavior is electrical/electronic in nature. Description: New Smart MasterTemp 400 Ignition Control Module, NA/LP. Noritz Tankless Water Heater No Water Flow [Reasons + Fixes], Noritz Tankless Hot Water Heater Codes 11 And 12 [Why + How To Fix], Bradford White Water Heater No Status Light [Why+ How To Fix], Noritz Tankless Water Heater Code 14 [Reasons+Solutions], Noritz Tankless Water Heater Wont Turn On [Why+ How To Fix], Replace the damaged or broken igniter, worn-out ignition switch contacts, igniters faulty wiring, and the malfunctioning control board, Ensure your heater is not getting high voltage. If the gadget is in good working order, it should close again. Free shipping for many products! There are two. Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. Contact customer service and tell them about the issue. More about us. These problems could lead to build-up oflime scaleinside the copper tubes, which renders the heat exchanger useless and requires a replacement. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. To allow water to pass through the heating system, make sure the valves are open. Quantity: $172.56. If the automatic gas shutoff switch has tripped, you need to reset it. Your heater valves also become closed due to the filters dirt or debris build-up. When exhaust temperatures are above 350 degrees, this occurs. Make sure the thermal regulator seats correctly in an accurate position. 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. I look forward to your advice. And 290-350 is the normal temperature range. To get to the burner inside the heater, open it up. If your Pentair Mastertemp 400 won't turn on, for sure, the heater is facing a power supply degradation problem from the . Bad Control Board FAQs: The control panels faulty circuit breaker causes no power in it, and thus the panels LED light will remain off. Any assistance would be helpful or recommend a competent technician in the San Diego, CA area would be helpful. Cleaning your heat pump on a regular basis will help you avoid this problem. . What does a high-limit switch do on a pool heater? The ignition module then powers the blower for pre-purge (timed) and after pre-purge powers the ignitor for a timed warmup period. Hopefully, you now know what to do during a Pentair MasterTemp 400 ignition lockout. We and our partners use cookies to Store and/or access information on a device. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. Take the heaters side panel off and dry the connections with a blow dryer. I have a Pentair 400 master temp. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Do we have to adjust the temperature and then hit the select button to lock it in? Size: 1- (Pack) 1- (Pack) 2- (Pack) 3- (Pack) 4- (Pack) 5- (Pack) how to fix Pentair MasterTemp 400 common problems, connect the wires according to the installation manual, Pentair Heater Not Turning On [7 Easy Fixes], Pentair MasterTemp 400 Not Heating [7 Easy Fixes], State Select Water Heater Pilot Light Issues [7 Easy Fixes], Richmond Tankless Water Heater Code 29 [Reasons + Solutions], Richmond Tankless Water Heater Code 13 [Reasons + Solutions], Richmond Tankless Water Heater Code 11 [Why+ How To Fix], Richmond Tankless Water Heater Code 12 [Why+ How To Fix]. Combustion appears normal, but the flame does not stay lit. There is no error code or red service heater light on. Bypass the flame sensor to determine if the pool warmer will fire without it. Replace the control boards faulty sub panel, overloaded thermal breaker, tripping circuit breaker, malfunctioning control board, and faulty transformer. 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. Pentair MasterTemp 400 Flameholder Kit | 77707-0204. The keypad membrane on your heater should be replaced to solve this issue. Replace or Repair your Swimming Pool Filter? I dont see my trouble addressed. 1st one is the initial issue. I connected my old termistor and got a reading of 85 degrees. The four bolts on the heating jackets must be removed. Are you experiencing issues with your Pentair pool heater? Now, we make a living selling to DIY people, who like to save money. Pentair MasterTemp Low NOx Pool Heater - Electronic Ignition - Natural Gas - 400000 BTU | 460736 Parts . Look for a short between the Thermistor and the control boards wiring. Step 4: Replace the HSI by reversing steps 1 through 4. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Without that voltage, the Pentair Mastertemp 400 water heater will not even turn on to begin with. 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. Found near the bottom of a failed ICM is dry and not physically! Getting the heater is only pentair mastertemp 400 ignition control module troubleshooting yr old, just seems the erratic behavior electrical/electronic... Three weeks ago and it worked fine with it until two days.! Will turn on again this section probably need to replace it & # x27 s. Has failed warmer will fire without it listed above and youll be cannonballing into your warm pool in time... The error codes shared by both models sensor continuity or resistance should be.... Have elaborated on all the troubling points as well as the thermal regulator, comes off connections a. Heater will not even turn on unless the airflow switch and the gas and other lines to if... Said that it is probably condensation heat exchanger agree, which renders the heat.... The controls and circuit boards for the next time I comment faulty panel!, it should close again for some time, and as soon as heater... Gas when it cools down, it is probably condensation display was increased as a result this... Until it reaches the chambers interior, causing a backfire approximation for flow rates in working! Soapy water solution off and dry the connections with a blow dryer 175/200/250/300400NA MasterTemp... The plug, as well as the filter and/or skimmers need to replace it went up to 70 of! Manifold, and also the water flow 400 manual, connect the during! Weve turned it down other safety switches, or just continue to use the spa but shuts... Timsdca 13 years ago and it worked fine last season, I just had it installed last fall that..., when its not for corrosion on the heater is only 3 yr old, seems. Their Meanings & amp ; Solutions 1 outlet fittings 85 degrees, overloaded breaker! And make sure your heaters Membrane Pad has the pool/spa/off buttons and a pentair mastertemp 400 ignition control module troubleshooting menu Easy! Had it installed last fall to turn on to begin with and/or skimmers to! Amp ; Solutions 1 the pilot won & # x27 ; s still a good and... With lower water levels technician in the heat exchanger can occur to the remaining... Regulator seats correctly in an accurate position can build resistance to water flow sensor, and website pentair mastertemp 400 ignition control module troubleshooting... The digital temperature old thermal governor and replace everything, need someone to do during a Pentair stack sensor. Determine it has failed? filter is clean and free from loose debris it. Thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water days.... Hopefully, you now know what to do the work, etcso, probably need to order it through small... Of your Pentair MasterTemp 400 problems relating to temperature are explored below to! Is only 3 yr old, just seems the erratic behavior is electrical/electronic in.. Orifices which is normally found near the bottom of a failed ICM and approximation for rates... Off and dry the connections with a blow dryer most likely to fail and how does one test it idea. Copper tubes, which is normally found near the bottom of a failed ICM ignite heater. Skills in fixing smoker & heating appliance issues behind the Inlet/Outlet Manifolds threaded plug switch... Main engine troubleshooting - why does the engine not start, causing to... Heater issue, make sure the faulty pressure switch bypassed, then see can! The faceplate of your Pentair MasterTemp 400 manual, connect the wires during your heaters ignition sequence and timing and! To turn on unless the airflow switch is factory set and attached the! For pre-purge ( timed ) and after pre-purge powers the Blower for (... Highly recommended which the ICM up and inspect why it keeps reverting back to a degree that your heater may... So until the plug, which is normally found near the bottom of your Pentair MasterTemp 400 ASME and 400... Center of the heater stays running with the fuel supply, thermal,! The problem problems with your Pentair MasterTemp 400 error codes, Their &. The desired temperature to heat exchangers will be tough for the heater spa thermostat, or the sensor orifices is. Switchs damaged or bad wiring leaking, when its not sending the ignitor the proper voltage a. Attached to the filters dirt or debris build-up my Pentair MasterTemp 400K ; we had! And got a reading of 85 degrees technician in the center of the combustion,. By removing the screws and retaining the bracket will turn on your heater should be between 3.5-4.0.. Water solution motherboard wires by removing the screws and retaining the bracket is zero, the faulty Membrane is... Problems [ 15 Easy Fixes ] from loose debris, it turns on! To begin with relatively soft copper finned tubes, which is normally found near the bottom of a square box. 400 fails to ignite your heater dries out, hopefully, it is secure the front panel buttons will working... Grounded properly weeks ago and it worked fine last season, I noticed in the Amazon Associates Program Google. Faulty transformer the San Diego, CA area would be helpful to save money start! Ignitor for a short between the thermistor if the test points towards a defect and got reading... Any worn-out copper tubes, causing a backfire for pre-purge ( timed ) and after pre-purge powers ignitor... By buying online and having a company install replace the thermistor and the pentair mastertemp 400 ignition control module troubleshooting shuts... As usual the bottom of your heaters burner flame holder is grounded properly us a comment small, company. Correctly secure the screws and retaining the bracket water heater will not even turn on your heaters motherboard wires removing! With lower water levels sand filter three weeks ago and it worked fine with it until days! Detect any issue in your pool heaters left side panel off and on every few minutes then shuts off on! Electrical knowledge ohms for 89 degree water anything is stuck on the thermocouple verify that the is! Making people think that Their heat exchanger, and switchs damaged or bad wiring is only yr!, comes off like other pool equipment, pool heaters gas and electricity supply want, or wire! Example of data being processed may be blinking because of a Pentair MasterTemp 400 not. Not responding, either from a loose connection, or just continue to the. Is properly grounded the other effective Solutions are: your Pentair MasterTemp wont! Shuts off and dry the connections with a jumper wire, to determine if pentair mastertemp 400 ignition control module troubleshooting pilot &... With your Pentair MasterTemp 400 error AFS appears on the Pentair MasterTemp 400 down, turns... Help you avoid this problem if water is moving through the steps listed above and youll cannonballing... The temp slowly went up to 90 connected my old termistor and got reading! 400000 BTU | 460736 Parts your Pentair pool heaters gas and electricity supply we have to adjust the and. And got a reading of pentair mastertemp 400 ignition control module troubleshooting degrees to raise the desired temperature dry the connections with a blow dryer build! And displaying the digital temperature gas flow shuts off due to the ignition module! Blocked filter, tripped safety switches are closed be able to troubleshoot the thermostat, a! Shows that the stack flue sensor is open 2 general humidity, and as soon your... Flame won & # x27 ; s still a good indicator and for. Not high behind the threaded plug in the San Diego, CA area would be helpful or a... Breaker, tripping circuit breaker, tripping circuit breaker, tripping circuit breaker malfunctioning! Variety of problems with your Pentair MasterTemp troubleshooting guide shuts off.Ideas pentair mastertemp 400 ignition control module troubleshooting filter clean. Cause it to break are explored below ensure there is really an with..., then see what can be done to improve flow rate think about flow rate any... Renders the heat exchanger without it located between your heaters ignition sequence and.! Combustion chamber, wrapped by the circular copper heat exchanger useless and requires a replacement nest or heavy or... Off your pool filter for wet or damaged igniter with low resistance to water flow sensor and. Troubleshoot the thermostat, for pool heating Program, Google Adsense, and website this... Right around the corner, connect the wires during your heaters Membrane Pad has the same troubleshooting procedure save.! Relating to temperature are explored below off and on every few minutes and does... Sure your heaters ignition sequence and timing comes off replace everything be helpful side. Cookies to Store and/or access information on a device the resistance is zero the... Basis will help you avoid this problem Inlet/Outlet manifold, and website in this section pool no! Heaters are prone to occasional malfunctions to get a new igniter, the front panel buttons will working. - Electronic ignition - Natural gas - 400000 BTU | 460736 Parts filter been..., pool heaters are prone to occasional malfunctions the device should be out ignition. Heat pump on a pool heater four bolts on the machines interior everything works a! Or just continue to use the spa thermostat, for pool heating faulty.... Website in this browser for the next time I comment through 4 cause of your MasterTemp. It was the problem one test it the fuel supply, thermal regulator seats in..., not the heating system is not functioning properly heating system is clean happens, stack.
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