Remove the AGS Switch from the Manifold by unscrewing it. The ignitor is connected to the Molex connector with wires. This is a very rewarding learning experience for me. It can even be dangerous. Its not a major problem, but if your heater gets wet due to rain or any other reason, your heater will stop working. Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. Malfunctioning Blower 9. Our methods will help you solve Pentair Mastertemp 250, 400, and 125 error codes as well as other Mastertemp models' error codes. When replacing the ICM, connect the wires according to the installation manual. If the problem persists, remove the temperature regulation completely and see whether the heater runs. There are two. Shorted Or Defective AGS 6. Work through the steps listed above and youll be cannonballing into your warm pool in no time. This error code appears when Pentair MasterTemp 400 ignition lockout takes place. To Replace or Repair your pool filter - that is the first question. When Pentair MasterTemp 400 ignition lockout occurs, your heater will display the error code ERR IGN. The leak can be verified by you, if you lift the lid and inspect inside. We have a new Pentair Mastertemp 400. Replace the fuse if blown. We manually turn up the temp to a warmer setting when we swim while the system is running. If your pool filter has been struggling the last, Spring is here and summer is right around the corner. Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. Temperature Problems 3. Maybe that is it? . 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. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. The igniter can be found close to the top of the combustion chamber. When the condenser coil on your heat pump gets unclean, it needs to work more to provide equal amounts of heating as normal. To fix your heaters control panels hitch, do the following: Note: Checking the voltage is quite risky and has accident potential. However, the other causes of the control panels malfunction are: If your heater fails to turn on or ignite, first check whether your heaters control panel is getting power or not. The damaged or wet igniter cant ensure high resistance. Pentair MasterTemp Max-E-Therm Ignition Control Module | 42001-0052S | 476223. When the heater tries but fails to start, it recycles. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. Pentair water heaters have garnered a dependable reputation for being efficient. To test, unplug the ignitor and place your meters leads on it, setting the voltage to volts. After a minute of starting a Pentair heater, optimum airflow is achieved in the system. Because gas pool heaters do not contain the massive amounts of gas required to trigger an explosion inside or around them. Are you experiencing issues with your Pentair pool heater? More about us. Digital connectivity with your pool's automation system and an advanced ignition control module with flame strength sensor help to ensure optimal heater performance. Another typical cause of a Pentair heater ignition lockout is a faulty igniter. Change the faulty igniter and the bad ignition module. Step 1: Take off the left side panel of the heater. Faulty Igniter Igniter Replacement Instructions 2. Replace in case necessary. Display Not Working 5. You may need professional assistance to fix your heater if you dont have much electrical knowledge. The thermal regulator should be in fine working condition. Even if your Pentair Masteramp heaters terminal board gets power, the heater wont turn on, which means the faulty fuse is creating an issue. 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. Digital connectivity with your pool's automation system and an advanced ignition control module with flame strength sensor help to ensure optimal heater performance. Get a new igniter, the same as the previous igniters part number. Troubleshooting Guides; Product Manuals; POPULAR . COPYRIGHT 2023. You need to take apart the filter cover and get the elements out. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. Greetings Mr. Merino I opened pool 2 weeks ago, but only started heater last weekend. Pentair Mastertemp 400 Wont Turn On [10 Troubleshooting Tips], 2. Remove and adequately clean the filters remaining large debris. Your Pentair MasterTemp 400 display not working generally means that your unit is not getting power, you have a blown glass fuse, or a defective control board. When were done swimming we turn the temp down to a lower setting while the system is running before the system automatically shuts off for the night. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter. If the sensor resistance is below this range, you should replace your Pentair heaters Stack Flue Sensor. Wait for some time, and as soon as your heater dries out, hopefully, it will turn on again. Hello Bought the house 2.5 years ago. Im so glad I didnt have to buy additional parts. Of course, there is also an internal bypass in most gas pool heaters. The water inside the equipment can freeze and expand, causing cracks in your 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 airflow switch is factory set and attached to the ignition module. Plus, itll be helpful for you to read our complete solution guide on Pentair MasterTemp 400 keeps shutting off. Follow the actions outlined below to replace it. (Be sure that it is leaking and not just condensating). These Pentair MasterTemp 400 Problems relating to temperature are explored below. Your heater light may be blinking because of a failed ICM. All Right Reserved by HeaterFixLab. Your heater will not light if the igniter fails to create a spark. 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. While running your heater, you need to ensure that the water pressure is not too high. Look at the blower if you hear a clicking sound. Defective Membrane Switch 8. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. I also noticed that I couldnt completely open the valve on the return lines. 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. To unscrew the plug, fit a standard screwdriver into the plugs threads and twist the handle. Ignition Failure 2. Heater Turns On Automatically 7. Thank you Frank Step 3: Drain the heater by removing the Drain Plug from under the Manifold. We and our partners use cookies to Store and/or access information on a device. we have a Pentair mastertemp 400K; We just had it installed last fall. Do you have a picture of the Fenwal? Step 4: Take the switch cover off. Other reasons why the heater is not turning on include: Faulty igniter The defective ignition control module Bad control fuse An HVAC company would install it as well, or an Appliance company. Also, your heater displays the error code ERR IGN. The wiring diagram is given below for your reference. The Thermal Regulator is a regulated valve that regulates water flow in order to maintain a temperature over 120 degrees Fahrenheit at the Heat Exchanger Outlet. It could also be just general humidity, and a very moist/humid area, not so good for circuitry. When I hold it, the temp slowly went up to 90. It usually drips inside of the heater, making people think that their heat exchanger is leaking, when its not. Also, the sparking igniters working condition becomes vulnerable. There are some common temperature issues that users face. To safeguard your heater from freezing temperatures, do two things. Optimistically, if your Pentair heater stops starting, you will fix it by yourself in no time. Get your heater out of ignition lockout mode. Continue with Recommended Cookies. Verify your heaters burner flame holders installation and make sure it is properly grounded. However, the faulty ICM fails to ignite your heater. That could be an o-ring issue on the union, or a leaking drain plug, or at the point where the manifold bolts to the heater body. The easy replacement steps are: The lousy control fuse inside your heaters silver box and the power interface board are other reasons which hinder your heater from coming on. The Service Heater light comes on when the heat shuts . 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. Bypass the flame sensor to determine if the pool warmer will fire without it. Remove the old thermal governor and replace it with a new one. Is it possible to replace the heat exchanger or do I need to replace the entire heater system altogether. Check your igniter module. Pentair 77707-0001 Manifold Bypass Valve . Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. I have a Pentair 400 master temp. After the gas valve opens, the HSI will switch to a sensing mode to monitor the flame. Hi Lance, those are good ideas, first lets think about flow rate. The temp display fluctuates wildly from 70 to 90 degrees and anywhere in between. You can test the thermal regulators continuity by removing it. Turn on the resistance testing mode on a multimeter. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. To reach the switch cover bolt, unbolt and remove the Upper Left and Upper Right Jackets from the heater. So, now you have a crystal clear idea of why your Pentair Mastertemp 400 wont turn on. If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. Inspect the pump and filter and clean if necessary. If the Fenwal light is flashing 3 times indicating a lockout, that indicates that the Fenwal ignition control module is not reading a flame current signal. Then it came back on without my doing, switched to spa mode and commanded 110F setpoint. We have a Pentair minimax 100 Dsi. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. Combustion appears normal, but the flame does not stay lit. 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. The sensor continuity or resistance should be between 3.5-4.0 megaohms. You can try replacing the control board yourself in case you have some electrical knowledge. You have a working thermal regulator if it opens. When you switch on the heater and it runs through the 888, 128, R13, pay attention. 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. If the resistance is zero, the stack flue sensor needs to be replaced. how to fix Pentair heater error codes problems. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. Again, if it is displaying a lower temperature, the heater may keep heating even if the water is hot enough. 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. Another thought is that the internal bypass, in the front header/manifold, may be broken or stuck open, allowing too much water flow to bypass, which causes the water in the heater to over-heat? Defective Ignition Control Module Ignition Control Module Replacement Instructions 4. 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). When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. 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.. Your heater's ignition control module is the most likely culprit that will need to be replaced. The pipes going in and out of the heater need to be unplugged for good measure. You can install a bypass valve to regulate the required flow rate. Also could possibly have circuit board problems. Unfortunately, the only way to solve this issue is to get a new heat exchanger. Thus when your Pentair pool heater stops turning on, you should check and replace the bad igniter. An example of data being processed may be a unique identifier stored in a cookie. This kind of damage can be very costly. $4100 is not cheap. How much does an ignition control module cost? The water circulating through the copper heat exchanger tubes absorbs the heat, and exits the heater a few degrees warmer than when it entered. Alerts pushed to a smart device to keep you updated on heater performance and real-time status. Some filters need back-washing. Bad Control Board FAQs: 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. 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. You may need to replace it. To get to the burner inside the heater, open it up. This item Pentair 460783 Ignition Control Module Replacement Kit MiniMax NT Pool and Spa Heater Pentair 472447 Digital Module Ignition Control Replacement MiniMax Pool and Spa Heater Swimables 42001-0063S High Limit Switch for All Pentair Mastertemp and Starite Pool Heater - Compatible with All Sta Rite and Pentair Pool Heater Parts A defective thermistor can cause an ignition lockout. Although, theres strong water coming out of the 2 return lines. Contact customer service and tell them about the issue. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. 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. Pentair Mastertemp 400 Won't Turn On [10 Troubleshooting Tips] 1. Also check that the blower comes on. Check that the heater is getting sufficient gas supply and pressure to run. If the automatic gas shutoff switch has tripped, you need to reset it. The exhaust pipe is leaking water. The same is true for the StaRite Maxetherm heaters. Defective Ignition Control Module 7. If your Pentair Mastertemp 400 won't turn on, for sure, the heater is facing a power supply degradation problem from the . As always, use caution when working with your heaters electrical system. The wires and connectors connecting the legacy ICM should be disconnected. We receive monetary benefits in return for showing ADs on this website at no cost to you. Its possible that you have a defective control unit or thermal sensor unit if the burners start up and then shut down. 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. The control board is in charge of almost all of the activities of your pool heater. Also, at least once a year, you should disassemble and clean the D.E. The ignition control then outputs 24V to the Operating control ( Val to Val ) and through the safeties (Ags and Stack Flue Sensor to the gas valve). You need to follow the instructions given below to replace the AGS switch. Sensor Issue 7. So when it goes bad, your pool heater will not start. Hi Emma, your heater has two thermostats, for convenience, to keep one set to spa temp and one set to pool temp, so you dont have to go back and forth, and try to remember the exact setting each time. Defective Control Panel 11. If not, be sure the faulty Membrane switch is the culprit. If the blower is working properly, you may have a faulty air flow switch. However, after several attempts, even if your heater starts when the SFS code is on, your heater will not stay lit. Each switch performs different safety functions such as: All these switches are your heaters safety devices. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. The ignition module then powers the blower for pre-purge (timed) and after pre-purge powers the ignitor for a timed warmup period. Replace the control boards faulty sub panel, overloaded thermal breaker, tripping circuit breaker, malfunctioning control board, and faulty transformer. Clean up all the flue sensor orifices to ensure there is no grime on them. 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. The blower needs to be repaired or replaced in this situation. The device should be out of ignition lockout at that point. Please help. The ERR PS indication on the LCD shows that the heater is receiving insufficient water flow. And thus your heater will stop starting. Can you give some thought? The burners on this type of MasterTemp/Max-E-Therm heater are unique from previous generation pool heaters. However, along with the improper installation, the faulty ground circuit and lousy wire from the burner base disturb the burner flame holders functioning. What can cause your Pentair MasterTemp 400 blower not working is a bad blower motor or a defective control board. The following are some of these issues and their solutions: These are the possible solutions for this issue. And then connect the new igniter to your heaters motherboard wires. You need to identify and solve the underlying cause of this issue before resetting the heater. Due to the sensor malfunction, your Pentair Mastertemp 400 heater can stop turning on. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. Change the faulty igniter and the bad ignition module. Note: when the opened the manifold last winter to replace the bypass, the manifold and the heat coils have no signs of scales. To resolve this error number, ensure the fan is not obstructing airflow. Doing this will drain the heater of any water, ensuring that no part of it has enough water to freeze and expand, causing harm. The reading should be 50-500 Ohm at room temperature. How do you test a Pentair stack flue sensor? Why does my Pentair heater keep turning off? He thought that with time, it dried out, thus returning to normal predictable function. However, your heater will show the exhaust temp. If your control board is broken, you must replace it. So regularly clean your pool filter to avoid a clog. It continuously bounces between pool and spa. This would allow air to escape from the top of the filter, followed by a high-pressure water jet as the air is ejected. To see if the thermal regulator opens, submerge it in water. Step 2: Disconnect the system from the Max-E-Therm heater. Hi Hugh, is it a Hayward heater? The reasons for which the ICM goes bad are: The Ignition Control Module is in charge of your heaters ignition sequence and timing. Quantity: $172.56. timsdca 13 years ago Hi All, I Just had a new pool finished and am having difficulty getting the heater to ignite. Main engine troubleshooting - Why does the engine not start? 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. Remove the wiring connection. The pump basket blockage or clogged filter causes water flow resistance. Replace it if you want, or just continue to use the spa thermostat, for pool heating. It makes a clicking noise from the Ignition Control Module while at the same time, the HLS light briefly blinks and goes away. Before turning on, the heater contains a pressure switch and an internal bypass to ensure the right amount of incoming water flow. Step 4: Insert the new ICM into the Junction Box chamber of the heater. If needed. If no ignition, I turn off, wait, then re ask for heater. Its a fun combination of plumbing, wiring and gas. It could be caused by insufficient gas, damaged or wet igniter, defective ignition control module, or improperly grounded burner flame holder. Step 5: Finally, remove the control panel assembly and replace everything. I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. The pool heater is about 4.5 years old. He loves to share his knowledge & helps others in fixing their units & saving their pockets. All Rights Reserved. The typical cost of replacing an ignition control module is $292-$398. Check for wet or damaged igniter with low resistance to ground. Make sure the thermal regulator seats correctly in an accurate position. Be sure all connections are clean and tight. I just never thought something was wrong with it because the company servicing my pool and heater had it setup like that. No error codes in front and no led error indicator on the back panel as well. Digital connectivity with your pool's automation system and an advanced ignition control module with flame strength sensor . Thanks for the help. The wires and connectors connecting the legacy ICM should be disconnected. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. Let us know if you need help finding it. Step 5: Take the new AGS switch and reverse steps 1 through 4 to replace it. 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. A sparking igniter is in good working condition. Heat exchangers, when they fail and leak, they develop pinholes in the copper tube, or may also leak at the point where the tubes are welded to the end plate. Replace or Repair your Swimming Pool Filter? We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. Gas and air are mixed and ignited in the cylinder, which warms the tubes wrapped around the central burner chamber. So, was going to need to be replaced at some point. If you are sure that the heater is getting power from the outlet, examine the fuse inside your heater. The next day I powered pool-on and it registered the correct water temp. In case the issue persists, replace the control board. B13,B14,B16,B17,B18,B19. 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 After just a few minutes on heating, the burners shut off, before the water is warm. Faulty Temperature Sensor 9. SFS is stack flue sensor. We are always here to help you. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. In fact, his aim is to help his readers to fix the issues with their heating appliances easily.More about us . Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. See page 16 and verify the gas regulator is -0.2 wc. I installed a Ta60d sand filter three weeks ago and it worked fine with it until two days ago. Pentair Mastertemp 400 wont turn on mainly due to the defective igniter, incorrectly grounded burner flame holder, malfunctioning Ignition Control Module, and lousy control fuse. Pentair Heat Exchanger Troubleshooting: . Wet Or Damaged High Limit Switch 5. So, MasterTemp 400 ignition lockout could be caused by a tripped or defective airflow switch. Error Code R13: Startup Mode 4. First, test the terminal boards fuse to ensure your heaters continuity. 400: 40 (152) 120 (454) . Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! They will help you out with replacing your control board. Your heaters blower through the mixer draws the gas and air and forces these elements into the burner flame holder. No other control board or ICM lights come on. Step 3: Disconnect the heaters previous ICM unit. They have a have an SF code for Sensor Failure. The ignition module will not turn on unless the airflow switch and the other safety switches are closed. If the heater still wont turn on after cleaning the flame sensor, its time to get it replaced. Easy. ), Pentair MasterTemp 400 Ignition Lockout [7 Easy Fixes], 2. 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. Ensure appropriate gas flow and pressure in your heater, Clean your heater and ICMs dirt and black residue. Is the filter or baskets dirty, or impeller clogged? If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. Here we have elaborated on all the troubling points as well as the fixing steps. Ascertain that the blower is securely fastened in its location. In case the burner is broken, remove it and replace it with a new one. 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. Copyright 2022 In The Swim. I shouldve tried harder to learn how the pool works. This problem has a very basic and straightforward fix. The Thermal Governor has become jammed and is unable to open. The Thermal Regulator is located behind the threaded plug in the Inlet/Outlet Manifold, between the inlet and outlet fittings. If your pilot isn't lit, check the gas pressure, air supply, and proper venting. The valve has to allow enough water into the heater, not too little, not too much. On your pool heaters Junction Box chamber, insert the new ICM. To accomplish this, you must: As you turn on the heater, the error code should no longer be on display. $354.18. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. You may require cleaning your filter this way twice a year instead, depending on consumption (particularly if your pool is open all year). So,just curious if I do have a way to validate there is really an issue or if I just have to bit the bullet and trust them implicitly? The level of resistance will alter if there are cracks in the HSI that affect performance, but they may be too slight to perceive. 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. I called Pentair tech support and they helped with some troubleshooting. Low water flow is the cause of up to 70% of all My heater wont heat service calls. Heater Keeps Shutting Off 4. Membrane switchs damaged or faulty wiring. Thus your Pentair Mastertemp 400 fails to turn on due to the igniter with a low resistance to the ground. Dont stress! . If the burners are not igniting, check for clogs in the burner orifices, you can ream them out with a tiny wire, just a strand. Free shipping for many products! It worked well as usual, heated water to 85F as commanded. I have replaced the Stack sensor thinking that it was the problem. The solution to your heater issue is given in your previous comment. Rust or red spiders can clog these up. I was able to power heater off, then pool-on, and I could see 78 deg water temp registered, and with 80 deg setpoint, burner kicked on ok. 10 minutes later I went out to check, and Ad0 was on the screen, and I can not poweroff (heater-off button not responding), but behind the scenes I think it is responding to temp-up or temp-down command, to call for heat and burner, but the screen remains at Ad0. So, keep reading till the end. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. Without a working control panel, your heater is no good. What does E05 mean on the Pentair Pool heater? In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. . This problem can be resolved by servicing the pump or filter. The voltage that the Pentair Mastertemp 400 water heater needs are 24 VAC. All of this must be considered when deciding whether to fix the heater by changing the exchanger or replacing the entire heater. Panels hitch, do the following: Note: Checking the voltage that the heater a... Terminal boards fuse to ensure your heaters control panels hitch, do the following Note! Basket lid B17, B18, B19 issue is given below to replace or Repair your pool to. To 70 % of all my heater wont heat service calls connected to the ignition module then powers the for... Possible to replace the AGS switch from the outlet, examine the fuse inside heater... Lines are fully open and real-time status ask for heater his knowledge & helps others in fixing units... 400 troubleshooting guide starts with the error code ERR IGN gas supply and in! Help finding it it came back on without my doing, switched to spa and! That makes a difference air and forces these elements into the burner the... I installed a Ta60d sand filter three weeks ago and it registered the correct water.! ) and after pre-purge powers the ignitor for a timed warmup period electrical system proper... Can install a bypass valve to regulate the required flow pentair mastertemp 400 ignition control module troubleshooting I verified is working,! Code appears when Pentair MasterTemp 400 water heater needs are 24 VAC just never thought was! Loose connection, or just continue to use the spa but then shuts off.Ideas? filter is clean and from... Valve to regulate the required flow rate youre wearing proper protective gear massive amounts of gas required to trigger explosion! Store and/or access information on a multimeter stops turning on, your heater the voltage to volts light the... Theheat exchangeris that corrosion can occur to the installation manual the required flow rate board in... The installation manual in fine working condition becomes vulnerable it could be caused by insufficient gas, or. The control board, examine the fuse inside your heater if you want, or impeller clogged board yourself case. Degrees and anywhere in between wait for some time, it recycles connect wires. The gas and air are mixed and ignited in the Inlet/Outlet Manifold, and a very rewarding learning for... Thermal breaker, and low pH levels, give it a good with. T turn on again Manifold, and the Thermistor connections may be blinking because of a Pentair heater ignition could... Unable to open Drain plug from under the Manifold, was going to need to identify and solve underlying... Verify your heaters Membrane Pad has the pool/spa/off buttons and a keypad for inputting the spa but then off! Regulator opens, submerge it in water next day I powered pool-on and it runs through the mixer the! Without it must replace it the mixer draws the gas pressure, supply. We have a Pentair MasterTemp 400 wont turn on [ 10 troubleshooting Tips ],.. Valve has to allow enough water into the burner inside the heater, not heating. Way to solve this issue a pressure switch and thermostat, or crimped or... Contains a pressure switch and thermostat, or impeller clogged tubes wrapped around the corner to open connections! Damaged wires ICM, connect the new ICM into the Junction Box chamber, the... Pump basket blockage or pentair mastertemp 400 ignition control module troubleshooting filter causes water flow heaters continuity a square combustion.... Hour without stopping had a new one not, be sure that it is leaking and just... Governor and replace it incoming water flow is the first question underlying cause of your heaters motherboard.... Display the error code should no longer be on display pinhole leaks main engine -... 3.5-4.0 megaohms solution guide on Pentair MasterTemp 400 water heater needs are 24 VAC has to enough! Or replacing the ICM, connect the new ICM ICM should be 50-500 Ohm at room.. Heater, making people think that their heat exchanger what does E05 mean on the heater is receiving insufficient flow... Has accident potential guide starts with the error codes shared by both models expand, causing cracks in your.... For showing ADs on this website at no cost to you on unless the switch... A good cleaning with a new one I have a working control panel assembly and replace the bad module! Mixed and ignited in the basket lid the reasons for which the,. Think that their heat exchanger is leaking and not just condensating ) lets think about flow rate alerts pushed a... Or Repair your pool heater pool heating screwdriver into the Junction Box chamber, the... Removing the Drain plug from under the Manifold by unscrewing it ADs on website... Connections on the back panel as well new heat exchanger installation manual gas heaters ignite burners! No ignition, I have replaced the Stack flue sensor orifices to ensure that the contains! Is hot enough same time, and youre wearing proper protective gear will turn on unless the switch! Is properly grounded sparking igniters working condition becomes vulnerable our complete solution guide on Pentair MasterTemp 400 &! Need direction on correctly setting the temperature see Page 16 and verify the gas valve opens, it! Heater stops turning on 120 ( 454 ) and displaying the digital temperature crimped or wires... Yourself in no time fails to ignite required to trigger an explosion inside or around them to regulate required. Warm pool in no time accomplish this, you should disassemble and clean the filters remaining large.. The problem Box chamber of the filter or baskets dirty, or just continue use! The wiring diagram is given below to replace or Repair your pool heater will not if... Filter is clean to monitor the flame does not stay lit opened the 3-port valve and adjusted it where 2!, at least once a year, you should replace your Pentair pool heater will not start heaters Stack sensor... Replace the entire heater system altogether of trouble pentair mastertemp 400 ignition control module troubleshooting ignition failure to displaying the digital temperature a standard screwdriver the. Of course, there is also an internal bypass in most gas pool heaters Junction chamber... Sorts of trouble from ignition failure to displaying the digital temperature you will fix it by yourself in case burner. Igniter fails to turn on no ignition, I just never thought something was wrong with it until two ago... ( 152 ) 120 ( 454 ) and our partners use cookies to Store and/or information! Its location of this must be considered when deciding whether to fix heater! Igniter to your heaters safety devices chamber of the combustion chamber burner chamber Junction. Temperature, the Stack flue sensor needs to work more to provide equal amounts of heating as normal that the. Broken, remove the old thermal governor has become jammed and is unable to open cause your pool. The damaged or wet igniter cant ensure high resistance activities of your pool #... Which warms the tubes wrapped around the corner bottom of a square combustion Box have... May be getting wet stops turning on, your heater, making people think that their exchanger... And place your meters leads on it, setting the voltage to volts I called Pentair tech support and helped. It runs through the 888, 128, R13, pay attention to normal predictable.! Heated water to 85F as commanded check the gas valve opens, the temp display fluctuates wildly from 70 90! Threads and twist the handle explored below anywhere in between it, setting the voltage is quite risky has. Switch has tripped, you will fix it by yourself in no time the on! Came back on without my doing, switched to spa mode and commanded 110F setpoint Ta60d filter. Again, if you want, or look for any crimped or damaged wires also, your heater if hear... Number, ensure the right amount of incoming water flow resistance a fun combination plumbing... 400: 40 ( 152 ) 120 ( 454 ), pay attention and on few... Flow is the first question I verified is working properly, you need ensure! Faulty Membrane switch 8. http: //www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37 off, wait, then re for! Thermal sensor unit if the heater is turned off at the blower is securely fastened its. Filters remaining large debris noticed that the Pentair MasterTemp 400 ignition lockout at that point for good.... When your Pentair MasterTemp 400 water heater needs are 24 VAC can cause your Pentair MasterTemp ignition... Get it replaced switch on the LCD shows that the blower for pre-purge ( timed ) and after powers... 400K ; we just had a new one governor has become jammed and is unable open. - why does the engine not start most gas pool heaters & # x27 ; ignition! Remove the Upper left and Upper right Jackets from the Max-E-Therm heater do you test Pentair! Getting power from the Max-E-Therm heater to buy additional parts a spark error codes in front no. Escape from the heater still wont turn on again is not obstructing airflow I verified is properly! To allow enough water into pentair mastertemp 400 ignition control module troubleshooting Junction Box chamber of the filter or baskets,... And proper venting and adequately clean the filters remaining large debris a failed ICM longer be display. Just never thought something was wrong with it because the company servicing my pool and had... Making people think that their heat exchanger HSI will switch to a setting! At room temperature unable to open the airflow switch valve has to allow water. Are closed crystal clear idea of why your Pentair MasterTemp 400 unit that we need direction on correctly the! So regularly clean your pool filter to avoid a clog the 888, 128, R13, pay attention this. Thinking that it is most likely the Manifold bypass filter is clean for inputting the and! Frank step 3: Disconnect the heaters previous ICM unit regulator seats correctly in an accurate.... Thought that with time, and as soon as your heater if you dont have much electrical.!
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