The spa heat turns on and works fine but the pool heat only enable and never turns on. It is old and a bit rusty and loud. Low water flow is the cause of up to 70% of all My heater wont heat service calls. Look for any evidence of cracking on the flame sensor porcelain. Hi Lance, those are good ideas, first lets think about flow rate. Another typical cause of a Pentair heater ignition lockout is a faulty igniter. I think its a bit on the high side. A local pool service expert suspected the electronic control board may have gotten wet (we have had a good deal of rain here in northeast ohio recently) thus the odd error messages that I can not find in the owners manual. Find thermal regulators, control boards and more in our expansive inventory. Replace the defective parts. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. Combustion appears normal, but the flame does not stay lit. 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]. Im so glad I didnt have to buy additional parts. Verify your heaters burner flame holders installation and make sure it is properly grounded. filter should be backwashed. If not, replace it. To unscrew the plug, fit a standard screwdriver into the plugs threads and twist the handle. You must also restore the Igniter Gasket when repairing the HSI. It is always better to be safe than sorry. 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. Remove the AGS Switch from the Manifold by unscrewing it. An ignition failure can be the result of a failed flame sensor, bad igniter, malfunctioning ignition control module, faulty control board, tripped or broken automatic gas shutoff switch. Still have the power light lit but no other lights are lit. No code is present. When exhaust temperatures are above 350 degrees, this occurs. If the resistance is zero, the stack flue sensor needs to be replaced. You can clean your own pool filter easily. We activate both functions from a Jandy control inside the home Theres no code on the machine outside to indicate possible problems. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. Replace in case necessary. There is no error code or red service heater light on. Is the filter or baskets dirty, or impeller clogged? So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. Smart connectivity via the Pentair Automation Systems enable you to manage pool functions anytime, anywhere. filter. So, the voltage will only appear for about 20 seconds and it should drop out shortly after the gas valves opens. 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. Wet Heater 6. Bad Control Board FAQs: Wait for some time, and as soon as your heater dries out, hopefully, it will turn on again. 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. I also noticed that I couldnt completely open the valve on the return lines. Remove the wiring connection. The burners on this type of MasterTemp/Max-E-Therm heater are unique from previous generation pool heaters. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. Verify that the igniter is dry and not damaged physically. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. 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. Your heater will not light if the igniter fails to create a spark. Heater Keeps Shutting Off 4. Step 2: If the heater is below the pools water level, close the isolation valves to prevent the pool from draining. Also check that the blower comes on. I connected my old termistor and got a reading of 85 degrees. Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. The pool system must sustain the water flow in order for heaters to perform efficiently. 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 Size: 1- (Pack) 1- (Pack) 2- (Pack) 3- (Pack) 4- (Pack) 5- (Pack) But your heaters LCD screen displays nothing and the heater is not turning on mainly for the following reasons: Note: You can also read how to fix Pentair heater error codes problems. 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. Each switch performs different safety functions such as: All these switches are your heaters safety devices. To accomplish this, you must: As you turn on the heater, the error code should no longer be on display. It cycles for a bit then I hear a click either it fires off or it doesnt. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. COPYRIGHT 2023. 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. And thus your Pentair Mastertemp 400 stops turning on. The water circulating through the copper heat exchanger tubes absorbs the heat, and exits the heater a few degrees warmer than when it entered. No error codes in front and no led error indicator on the back panel as well. So, keep reading till the end. Its possible that overtightening the HSI base will cause it to break. In case there is blockage in the heat exchanger, how do I fix that? To hear if the small relay on the board clicks while giving voltage to the blower, put your ear right next to the top of the heater. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. When you try to turn on your wet heater, its igniter doesnt fire. These issues hinder your pool heaters easy operation, and the unit stops turning on. If not, replace it. It worked well as usual, heated water to 85F as commanded. Replace ignition or control module. and follows into a 6 page flowchart to step by step troubleshoot a Pentair or Sta-Rite pool heater, and get it firing again fast! Hi Peter, when he says the heat exchanger is shot, he must mean that the copper tubes are leaking water, caused by erosion and corrosion from high water pressure or low pH and alkalinity, over many years. The device should be out of ignition lockout at that point. Replace it. It continuously bounces between pool and spa. The other effective solutions are: Your Pentair Mastertemp 400 fails to turn on due to the faulty membrane switch. Web product owners manuals are available for nearly every product to help you and your pool professional install and service your pool and spa equipment and . The pool filter inevitably gets dirty due to its interaction with the pools water. Step 4: Take the switch cover off. The reading should be 50-500 Ohm at room temperature. I have a Pentair 400 master temp. The Service Heater light comes on when the heat shuts . Dont stress! I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). Sounds like a ghost in the machine! Turn off your pool heaters gas and electricity supply. Same issue continues. Plastics, paper products, oils, or mulch accumulated in the Filter, Gain access to your pool heaters filter by removing the filter cover. If the pump is running, its likely that the filter and/or skimmers need to be cleansed. Why does my Pentair heater keep turning off? Thus your Pentair Mastertemp 400 fails to turn on due to the igniter with a low resistance to the ground. Product Details. If your igniter doesn't spark, it is faulty and needs replacement. Frank. Cleaning your heat pump on a regular basis will help you avoid this problem. Pentair/Purex PowerMax 150-400 ThermalFlo Heat Pump Replacement Parts Models 460912, 460913, 460914, 460915, 460922 Thermoflo Heat Pump Titanium Pure Heat Bath Heaters Pure Heat Bath Heater PH-100 Pure Heat Bath Heater PH-101 Pure Heat Bath Heater PH-301 Purex Pentair/Purex PowerMax 150-400 Purex Tropic Isle Heater Raypak Burner pulsates or surges, especially on ignition. So in this case, you need to prevent the damage. FYInot a lot of options for competitive quotes, etcIn fact, they are so busy this summer, I couldnt even get anyone to look at it for 3 weeks and I just cant wait that long. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. If it fires off everything works fine a few minutes then shuts off.Ideas?Filter is clean. To get to the burner inside the heater, open it up. $354.18. This problem has a very basic and straightforward fix. Articles and resources for swimming pool owners and DIYers. And the exchanger out of the flue discharges the exhaust gas. It was installed where one return line is completely open and the other one is only slightly open. By re-immersing the thermal regulator in cold water, you may double-check it. Change the faulty igniter and the bad ignition module. Defective Control Panel 11. Step 3: Disconnect the heater's previous ICM unit. If the problem persists, remove the temperature regulation completely and see whether the heater runs. The thermal regulator should be in fine working condition. The voltage that the Pentair Mastertemp 400 water heater needs are 24 VAC. As always, use caution when working with your heaters electrical system. All Right Reserved by HeaterFixLab. 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. Defective Ignition Control Module 7. A leaking heat exchanger is a serious situation. And thus your heater will stop starting. In case your Pentair MasterTemp 400 is overheating your pool water, the culprit most likely is the control board. www.pentairpool.com. Test your control panel with a multimeter. Web pentair mastertemp 400 common problems are ignition failure, temperature problems, heater keeps shutting off, display not working. Plus, itll be helpful for you to read our complete solution guide on Pentair MasterTemp 400 keeps shutting off. Whenever he finds the perfect solutions to any issues of heating appliances after doing in-depth research, he loves to share them with his readers. Remove and adequately clean the filters remaining large debris. Any suggestions? I shouldve tried harder to learn how the pool works. When Pentair MasterTemp 400 ignition lockout occurs, your heater will display the error code ERR IGN. After about 20 seconds, it tries to ignite. Replace it if you want, or just continue to use the spa thermostat, for pool heating. Incorrect Wiring 3. Any ideas on what the problem could be? The breaker is tripped as a result of this. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. Also, the sparking igniters working condition becomes vulnerable. The blower needs to be repaired or replaced in this situation. we have a Pentair mastertemp 400K; We just had it installed last fall. 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. Step 3: To test, look for resistance across the HSI scale. We manually turn up the temp to a warmer setting when we swim while the system is running. It makes a clicking noise from the Ignition Control Module while at the same time, the HLS light briefly blinks and goes away. Inside the front header, where the pipes come in and out, there is an automatic bypass device that could be broken and allowing too much water to bypass. Hello Water running out from the heater could also verify, however there are other things inside the heater that can leak water. I do not have it connected to a spa. It doesnt sound like the heater is even trying to kick on. (Be sure that it is leaking and not just condensating). Now reassemble the filter, put its cover, and turn on your heater. I just never thought something was wrong with it because the company servicing my pool and heater had it setup like that. Check your igniter module. Pentair MasterTemp 400 Flameholder Kit | 77707-0204. . The controls and circuit boards for the Max-E-Therm and the MasterTemp are fairly identical. Low Water Flow 10. To see if the thermal regulator opens, submerge it in water. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter.