Display Not Working 5. Note: when the opened the manifold last winter to replace the bypass, the manifold and the heat coils have no signs of scales. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. Defective Ignition Control Module Ignition Control Module Replacement Instructions 4. A defective AGS switch can cause ignition failure. Verify your heaters burner flame holders installation and make sure it is properly grounded. Thank you Frank In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? To Replace or Repair your pool filter - that is the first question. Step 1: Remove the heater's left side panel. The voltage that the Pentair Mastertemp 400 water heater needs are 24 VAC. 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. Im so glad I didnt have to buy additional parts. Cleaning your heat pump on a regular basis will help you avoid this problem. Of course, there is also an internal bypass in most gas pool heaters. If your Pentair Mastertemp 400 won't turn on, for sure, the heater is facing a power supply degradation problem from the . Leaking heat exchangers are often confused with sweating or condensating heat exchangers. Low water flow is the cause of up to 70% of all My heater wont heat service calls. Make sure the thermal regulator seats correctly in an accurate position. Change the faulty igniter and the bad ignition module. . Still have the power light lit but no other lights are lit. You need to examine which part is malfunctioning. The Thermal Governor has become jammed and is unable to open. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. Turn on your heater and set the desired temperature. 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.. Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. Easy. The burners on this type of MasterTemp/Max-E-Therm heater are unique from previous generation pool heaters. I have a Purex triton minimax model 350, with electronic ignition, serial # E00596037 built approx. Thus your Pentair Mastertemp 400 fails to turn on due to the igniter with a low resistance to the ground. Malfunctioning Ignition Control Module. First, test the terminal boards fuse to ensure your heaters continuity. Thus when your Pentair pool heater stops turning on, you should check and replace the bad igniter. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. $294.34. 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. This is a very rewarding learning experience for me. Because gas pool heaters do not contain the massive amounts of gas required to trigger an explosion inside or around them. Dont stress! Simply unplug these and turn them off for the winter. Once clean, put the filter back together. I replaced the HLS twice to no avail. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. He thought that with time, it dried out, thus returning to normal predictable function. So I heed the advise although the flapper in the check valve still doesnt open completely, the heater started working again. Do you have a picture of the Fenwal? When I hold it, the temp slowly went up to 90. Replace with new igniter. This problem has a very basic and straightforward fix. Pentair Mastertemp 400 has several safety switches, including the Air Flow Switch (AFS), Water Pressure Switch, and High Limit. Check to see if anything is stuck on the stove. 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. Be sure all connections are clean and tight. Contact customer service and tell them about the issue. Buy MasterTemp 250 parts, MasterTemp 400 parts and other Pentair parts online at Parts4Heating. Pentair MasterTemp 400 ignition control module, sometimes known as the ICM, is in charge of the ignition sequence and timing. In case the issue persists, replace the control board. Your heater light may be blinking because of a failed ICM. Make sure the pilot tube is intact and not clogged. Is this normal? Check for wet or damaged igniter with low resistance to ground. If no ignition, I turn off, wait, then re ask for heater. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. Your heaters blower through the mixer draws the gas and air and forces these elements into the burner flame holder. From the Max-E-Therm heater, disconnect the system. How to Reset Honeywell Thermostat? Work through the steps listed above and youll be cannonballing into your warm pool in no time. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. SFS is stack flue sensor. 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. Heaterfixlab.com is a participant in Google Adsense and Ezoic Ad Network. Thank you for your time and response. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. Step 3: To test, look for resistance across the HSI scale. Defective Ignition Control Module 7. Could the problem be with the flow or pressure sensors? Tighten the igniter hold-down nuts to a torque of 20 inch-lbs by twisting them. When replacing the ICM, connect the wires according to the installation manual. Change the waters chemicals to achieve equilibrium. I have replaced the Stack sensor thinking that it was the problem. Its possible that overtightening the HSI base will cause it to break. Examine the area for any clogs or impediments. Im not sure where to even begin. 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. This problem needs to be fixed ASAP. But heat exchangers are expensive. It sits in a pool shed, with decent, not great ventilation. Also, the gas valve gets low-voltage power from this ICM. Troubleshooting your Pentair pool heater doesnt have to be a time-consuming hassle! Clean up all the flue sensor orifices to ensure there is no grime on them. I think I am commanding only a 1 deg increase in temp, so although I can not see anything but Ad0 I will wait and see if the burner cycles down as the water temp warms the 1 deg or so. We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. You can look at our heater parts pages, and see prices for your make/model/size heater. If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. Hello, I have a Mastertemp 200. Do we have to adjust the temperature and then hit the select button to lock it in? Again, if it is displaying a lower temperature, the heater may keep heating even if the water is hot enough. As of now, Im at the mercy of my pool company? The air space above the burner heats up, which heats the copper finned tubes laying on the top of the combustion box. when temp is down it kicks on as soon as it goes over setpoint it shuts off. The four bolts on the heating jackets must be removed. An example of data being processed may be a unique identifier stored in a cookie. Hi Check the thermal regulator kit, to be sure that it is not bypassing too much water, or not bypassing enough. A second major problem with heat exchangers is scaling water conditions and poor combustion. No code is present. The Pool company said that it is probably condensation. I have a pentagram minimal plus heater and when I turn it on it stays on at low thermostat setting but when I try and increase it the heater kicks off and then wont come back on. So regularly clean your pool filter to avoid a clog. If not, replace it. Description: New Smart MasterTemp 400 Ignition Control Module, NA/LP. 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. Some filters need back-washing. When you are trying to turn on your heater, the fuse can blow immediately. 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. Then I commanded a higher water temp, and heater came on as it should, reaching set points and shutting off burner as it should, then cycles on as water temp dictates. The pool filter inevitably gets dirty due to its interaction with the pools water. Faulty Igniter Igniter Replacement Instructions 2. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. filter. If the automatic gas shutoff switch has tripped, you need to reset it. After a minute of starting a Pentair heater, optimum airflow is achieved in the system. When you try to turn on your wet heater, its igniter doesnt fire. Follow the actions outlined below to replace it. Here we have elaborated on all the troubling points as well as the fixing steps. Kindly help. It is a sfs code, but with no e05 error code. Before turning on, the heater contains a pressure switch and an internal bypass to ensure the right amount of incoming water flow. This kind of damage can be very costly. Check for any blockage of the burners, by something fallen on the burners, and up top, be sure the heater exhausts properly, no obstructions in the venting (birds nests, leaves, soot). Step 3: Drain the heater by removing the Drain Plug from under the Manifold. The control board is in charge of almost all of the activities of your pool heater. Step 2: If the heater is below the pools water level, close the isolation valves to prevent the pool from draining. 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). . Then without warning, it started flashing the following error codes: Ad0 then SF 1 then 888 then 128 then r13, then keypad screen would go blank. Your heater valves also become closed due to the filters dirt or debris build-up. Step 3: Disconnect the heaters previous ICM unit. The solution to your heater issue is given in your previous comment. So I thought that was causing the problem. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. This issue should be checked ASAP. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. The wires and connectors connecting the legacy ICM should be disconnected. 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. Incorrect Wiring 3. COPYRIGHT 2023. Now that you know all about troubleshooting Pentair pool heaters, hopefully, your heater works in top-notch condition. What else can impact the temp reading? . So, keep reading till the end. 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. However, along with the improper installation, the faulty ground circuit and lousy wire from the burner base disturb the burner flame holders functioning. Pentair MasterTemp Electrical Troubleshooting: . Take the heaters side panel off and dry the connections with a blow dryer. We have a Pentair pool heater that all the sudden kicked off Saturday. . Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. Normally you can smell a little gas when it kicks on but it does nothing. So you could save $1000 by buying online and having a company install. 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. Web pentair mastertemp . Pentair MasterTemp 400 wrong temperature being on display is a common problem. Step 5: Take the new AGS switch and reverse steps 1 through 4 to replace it. Properly clean the sensor, heat exchanger, and coil. Clean up all the flue sensor orifices to ensure there is no grime on them. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. Size: 1- (Pack) 1- (Pack) 2- (Pack) 3- (Pack) 4- (Pack) 5- (Pack) The green spa or pool light comes on but the orange light for the heater doesnt come on. Also, at least once a year, you should disassemble and clean the D.E. Tripping Safety Switches Examine the connection between the burner and the gas and other lines to see if it is secure. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. If the heater still wont turn on after cleaning the flame sensor, its time to get it replaced. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] 1. It is always better to be safe than sorry. Be sure water flow is good (inspect internal bypass assy). Hello A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. Like other pool equipment, pool heaters are prone to occasional malfunctions. Step 2: Disconnect the system from the Max-E-Therm heater. An HVAC company would install it as well, or an Appliance company. Any ideas on what the problem could be? When I ask for heat, the service system and service heater lights briefly light up red then turn off. Moreover, water cant move at a normal rate through the clogged filter. But, is there a way that I can validate that there is really an issue? Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. A sparking igniter is in good working condition. When the heater tries but fails to start, it recycles. If needed. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. 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. 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. 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. If the gadget is in good working order, it should close again. Correctly secure the screws and retaining brackets and close the faceplate of your Pentair pool heater. Error Code E06: Stack Flue Sensor Is Shorted 3. (Seconds! Ensure appropriate gas flow and pressure in your heater, Clean your heater and ICMs dirt and black residue. It should be replaced. So in this case, you need to prevent the damage. It fires up fine again then the same thing happens. 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. Digital connectivity with your pool's automation system and an advanced ignition control module with flame strength sensor help to ensure optimal heater performance. To get to the burner inside the heater, open it up. Defective Membrane Switch 8. And also the exhaust temperature will remain below 250 degrees. Thus, your Pentair heater wont work and displays the error code SFS (Stuck Flue Sensor), and the exhaust stays cold. $354.18. Ascertain that the blower is securely fastened in its location. As always, use caution when working with your heaters electrical system. They said the 126 display was an error code. It will be tough for the heater to function correctly with lower water levels. Main engine troubleshooting - Why does the engine not start? Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Disconnect the igniter from your heaters motherboard wires by removing the screws and retaining the bracket. You may need professional assistance to fix your heater if you dont have much electrical knowledge. 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. Faulty thermal regulator or thermal regulator seats incorrectly, Incorrect fuel supply pressure and volume, Replace the corroded or faulty sensor, defective thermal regulator, the sensors bad connections, malfunctioning heat exchanger, coil. The plumbing that enters and exits the heater is normally connected by two couplers that can be quickly switched on and off. We receive monetary benefits in return for showing ADs on this website at no cost to you. If your control board is broken, you must replace it. Your wet heater may sometimes work or sometimes refuse to turn on. Looking like might be bad control board? Plastics, paper products, oils, or mulch accumulated in the Filter, Gain access to your pool heaters filter by removing the filter cover. Condensation is normal when the water is cold. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. See if the igniter fires when you turn on the heater. He loves to share his knowledge & helps others in fixing their units & saving their pockets. 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? To resolve this error number, ensure the fan is not obstructing airflow. 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. Error Code R13: Startup Mode 4. Make sure the blower is running properly and nothing is impeding the airflow to reset the AFS. Sounds like a ghost in the machine! 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. 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. 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