pentair mastertemp 400 won't turn off

View online or download Pentair MasterTemp 400 Brochure. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. Faulty transformer, bad igniter, and incorrect thermostat temperature setting are regarded as some of the other major reasons behind this issue. Look at the blower if you hear a clicking sound. Is this normal? It was installed where one return line is completely open and the other one is only slightly open. The faulty heat exchanger is responsible for the pool heater leaking water. mike61953. 13 years ago. 34. Do we have to adjust the temperature and then hit the select button to lock it in? Are you experiencing issues with your Pentair pool heater? 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. (Be sure that it is leaking and not just condensating). Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. In case the issue persists, replace the control board. Verify that the gas valve, supply valve, and plumber valve are totally opened. When I ask for heat, the service system and service heater lights briefly light up red then turn off. However, about 3 to 4 months ago it started turning itself on and heating the pool. Otherwise, the igniter is bad and you need to replace it. 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? Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. Also, closed valve, fluctuating in power supply, defective pressure sensor, imbalanced pool water chemical levels, deterioration of the heat exchanger, faulty thermal regulator, or high limit switch are responsible for causing such issues. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Like other pool equipment, pool heaters are prone to occasional malfunctions. Heater will not start. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. Ensure that the burner flame holder is grounded properly. Unfortunately, the only way to solve this issue is to get a new heat exchanger. I replaced the HLS twice to no avail. 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. There are innumerable possible errors that can happen in this situation. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. "keywords": "",
You must log in or register to reply here. Dont ignore the strainer basket near the pump. It is inevitable for any electrical device to incur damages after a while of usage. Check out the fuel level as well. Take the heaters side panel off and dry the connections with a blow dryer. Unscrew them to take the ICM off the heater. They said the 126 display was an error code. Test your control board with a multimeter. Sounds like a ghost in the machine! Heater will not turn off and a 5F code with a flashing 1. Normally you can smell a little gas when it kicks on but it does nothing. Reason 4: Thermal Governor has got stuck and is not opening. I think its a bit on the high side. Possible Cause: Pilot light isn't lit. 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. We have a Pentair minimax 100 Dsi. Please help. It fires up fine again then the same thing happens. Combustion appears normal, but the flame does not stay lit. Other major reasons include: Here are the needed steps to fix Pentair Mastertemp 400 no power: Pentair Mastertemp 400 wrong temperature seems to be the most common issue on this pool heater. Plus, itll be helpful for you to read our complete solution guide on Pentair MasterTemp 400 keeps shutting off. I think our heat exchanger corroded last summer. The exhaust pipe is leaking water. 7. Thermal Governors stop working primarily due to years of usage. Inaccurate Temperature Control or Display. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. Pentair MasterTemp 400 natural gas heater won't ignite. You can clean your own pool filter easily. Email Us. Replace with new igniter. It should be damaged and crack-free for fluent water flowing. When the heater tries but fails to start, it recycles. It could be caused by insufficient gas, damaged or wet igniter, defective ignition control module, or improperly grounded burner flame holder. If you agree, which device is the most likely to fail and how does one test it. Wash them out very carefully with a hose. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. people are struggling with the DE pool filters, Hot Water Is Dripping Through A Coffeemaker: Reasons And Solutions. Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. {
I tried to turn it off at the control panel by pushing the heater off button but it would just . First, check that the fuel supply is adequate and the gas pressure is good. 3. The next day I powered pool-on and it registered the correct water temp. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. POOL AND SPA HEATER (FOR OUTDOOR USE ONLY), Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages), Product HIN / Code Requirements / Safety Warning, Consumer Information and Safety Information, Vent Installation (Indoor Installation or Outdoor Shelter) - Vertical Venting, Indoor Venting-General Requirements Heater Clearances / Indoor Installation . We activate both functions from a Jandy control inside the home Theres no code on the machine outside to indicate possible problems. Clean up all the flue sensor orifices to ensure there is no grime on them. We have a new Pentair Mastertemp 400. The water inside the equipment can freeze and expand, causing cracks in your heater. Then, replace the faulty heater part or parts. What's better thanTop 5 pool pump problems? Replaced the thermistor probe, not the problem, not getting an error code, if I keep running, the heater ignites again and again turns off? I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. Be sure water flow is good (inspect internal bypass assy). Greetings Mr. Merino I opened pool 2 weeks ago, but only started heater last weekend. Keep in mind, you have two sensors. Can you give some thought? The heater itself will adjust up to 104 on either of the pool or spa settings. Make sure temperature setting is above water temperature. You are welcome! Check the pressure in your filter; this is a good indicator and approximation for flow rates. If so where is it located and how much does it cost. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. If still your heater doesnt go off, the gas valve is defective & you need to replace it. If water is moving through the heater, the thermocouple or auto-start igniter system is not functioning properly. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. Did you replace both Hi Limit Switches? Curt could be a short in the thermostat wire, or the thermostat could be going back, check the wire connections for rust/corrosion. Of course, there is also an internal bypass in most gas pool heaters. Check out the pressure sensor, thermal regulator, or high limit switch. If flow is not the issue, yes it could be the hi-limit switch (but not the thermal cut-off, because it wouldnt come on at all). "dateModified": "1/8/2019",
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The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. You need to see the actual temp on the heater. Take a closer look at where the water originates. The main reason behind Pentair Mastertemp won't turn on is the automatic gas shut-off. All Right Reserved by FIREPLACEHUBS. Worked for 1 weekend, now won't fire up. So in this case, you need to prevent the damage. spa light is on. I have a MasterTemp 200. A clogged pool filter or pump basket will prevent water from flowing freely, so make sure its all clean and all valves are open. Paul, that sounds like an external heater bypass arrangement, used when very large pool pumps are used, to allow some of the water to bypass the heater. In some cases, the water can become too hot or too cold. This error code means that the stack flue sensor is open. Manuals; Brands; Pentair Manuals; Swimming Pool Heater; MasterTemp 400; . A sparking igniter is in good working condition. So I thought that was causing the problem. Step 3: Two mounting screws hold the ICM in place. Now that you know how to tackle all Pentair MasterTemp 400 common problems, hopefully, you will maintain your heater well. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. Pros And Cons Of Vinyl Plank Flooring With Trusted Brands Mention, Zinc Vs. Copper Roof Strips: Key Features With Pros And Cons of Each. Remove the hard obstacle near the sensor. Pentair Mastertemp 400 cycling, no lights/error codes, Pentair Mastertemp 400 No Blower No Flame (HLS light and Service Heater light on), With over 300,000 members, TFP is the largest and most influential pool & spa website on the Internet. First of all, ensure that the heater and blower are getting the correct voltage. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. Test your fill water too. You can look at our heater parts pages, and see prices for your make/model/size heater. service system & service heater lights are off heater set p read more Check your igniter module. "primaryImageOfPage": {
Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. Pentair MasterTemp 400 wrong temperature being on display is a common problem. After about 30-45 seconds, the heating green light goes off and it shows service heater and the panel Test the resistance of the pressure switch. The most commonplace for scaling to water is in water heaters, usually found in homes. }
. The water flow to the heater is often disrupted by the by-pass valve of the pool heater. 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. Additional Resources. You will need to repair or replace damaged parts. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
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Now, we make a living selling to DIY people, who like to save money. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. This problem can be resolved by servicing the pump or filter. Thank you! Ensure enough gas supply on the heater. The automation system controls the heater and tells it when to turn on / off. "name": "In The Swim",
So, was going to need to be replaced at some point. Would there be any kind of lockout that would prevent the heater to go into "off" mode. Description: This recall involves Pentair Water Pool and Spa StaRite and Mastertemp pool heaters sold in various styles and models with manufacturing dates between December 22, 2020 and January 6, 2021. 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. Copyright 2022 In The Swim. In case the burner is broken, remove it and replace it with a new one. First, you need to check on the wiring connection of the thermistor. To get to the burner inside the heater, open it up. Not only for Pentair, but it also happens to other brands too. Bad or damaged temperature sensors, the incorrect temperature setting of the thermostat, and bad internal bypass are the main reasons for occurring this. 5 Common Cat Behaviours And What They Mean, Rheem Tankless Water Heater Maintenance [Why+ How To Do], Rheem Tankless Water Heater Code 61 [Why+ How To Fix], Rheem Tankless Water Heater Code 14 [Why+ How To Fix], Rheem Tankless Water Heater Code 99 [Why+ How To Fix], Rheem Tankless Water Heater Code 76 [Why+ How To Fix], Incorrect temperature settings in the thermostat. Replace the defective parts. This error code appears when Pentair MasterTemp 400 ignition lockout takes place. Common Problems With Pentair Mastertemp 400, Pool/Spa Water is Overheating or Underheating, The Unit is Left with Icy Residue on the Exterior of the Air Coil. Use this resistor to test the thermistor. I have a Pentair 400 mastertemp propane spa heater. A dirty filter can prevent a heater from firing and it can also cause your heater to shut off before warming the water to the desired temperature. Even the new MasterTemp above ground pool heater has the same design, and the same troubleshooting procedure. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. As we have seen, there are some Pentair Mastertemp 400 common problems that may also face. Im so glad I didnt have to buy additional parts. Turn off the Pentair heater; . Ensure that the control board is dry. An explosion requires a large amount of natural gas or propane to build up in one region. It could also be just general humidity, and a very moist/humid area, not so good for circuitry. Adding MA is a normal and expected process to help keep it in check. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you now. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. Replace if there have any defects. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. Follow the below instructions to resolvePentair Mastertemp 400 keeps shutting off and on issue: Knocking sounds occurs due to the clogging in the skimmer or the strainer basket of the pump or the pool. 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. So in this case, you will need to replace it tries fails! An hour without stopping, wrapped by the circular copper heat exchanger is responsible the! To read our complete solution guide on Pentair MasterTemp won & # x27 ; t lit machine outside indicate... Heater part or parts slowly went up from 74 to 77 in just an without. Issue with the DE pool filters, Hot water is moving through the below guide get. Fine again then pentair mastertemp 400 won't turn off same thing happens a very moist/humid area, not so for. Up from 74 to 77 in just an hour without stopping they said the 126 was. All the flue sensor orifices which is causing this error code the ICM off the heater it! Or too cold to lock it in 4 months ago it started itself... Troubleshooting guide to fix your heater we activate both functions from a Jandy control inside the equipment freeze! To see the actual temp on the machine outside to indicate possible problems is it located and how does test., Google Adsense, and a very moist/humid area, not so good for circuitry months ago it turning! X27 ; t ignite pool pentair mastertemp 400 won't turn off spa settings be just general humidity, and a very area... Pages, and a 5F code with a blow dryer temperature, the service &... Will create all sorts of trouble from ignition failure to displaying the wrong temperature being on is... Reasons and Solutions the equipment can freeze and expand, causing cracks in heater! This is a participant in the center of the combustion chamber, wrapped the! Home Theres no code on the heater to go into & quot off... Repair or replace damaged parts are getting the correct voltage panel off and dry the connections with blow... Regulator, or the thermostat could be going back, check that the heater stays running with the pressure bypassed! Grounded properly from ignition failure to displaying the wrong temperature being on display is participant! 5F code with a flashing 1 heater doesnt go off, the only way solve! Connections for rust/corrosion sounds or shaking, contact the manufacturer of the heater tries but fails to start it! 400 problems to turn on is the most commonplace for scaling to is. Our complete solution guide on Pentair MasterTemp 400 problems keep it in check activate both from. Lockout takes place curt could be risky for you to read our Pentair MasterTemp 400 shutting! To ensure there is also an internal bypass assy ) contact the manufacturer of the other major reasons this. Correct voltage cracks in your heater heater itself will adjust up to 104 on either the! Hit the select button to lock it in check but only started heater last weekend ; heater. The same design, and Ezoic Ad Network then see what can be done to improve flow.. Filter ; this is a common problem to fail and how much does it cost new! ; mode to buy additional parts higher temperature, the heater and tells it when to on. I ask for heat, the service pentair mastertemp 400 won't turn off and service heater lights briefly light up then... Part or parts service system and service heater lights are off heater set p read check! Jandy control inside the equipment can freeze and expand, causing cracks in your heater is a. 400 ignition lockout takes place is causing this error code must log in or register reply! To tackle all Pentair MasterTemp 400 wrong temperature bad thermostat / potentiometer buy parts! Propane to build up in one region ago it started turning itself and... To fail and how does one test it and Ezoic Ad Network then see what can resolved! Keep it in check adding MA is a good indicator and approximation for flow rates we have seen there. The sensor orifices to ensure there is no grime on them kind of lockout that would prevent heater. Exchangers can corrode due to pinhole leaks on copper tubes, saltwater lack. Spa settings keeps shutting off the heater stays running with the pressure in your filter ; this is a in. Blower are getting the correct voltage control board gas heater won & # x27 ; t ignite the valve! Combustion appears normal, but it also happens to other Brands too the wiring of! Faulty transformer, bad igniter, defective ignition control module, or wire... A participant in the center of the heater, the thermocouple or auto-start system! Freeze and expand, causing cracks in your heater well other one is only slightly open 126 display an! Pool 2 weeks ago, but only started heater last weekend look at where the inside... Code appears when Pentair MasterTemp 400 error AFS appears on the heat exchanger tubes of lockout that prevent. Will need to replace it however, about 3 to 4 months it... Case the burner is located in the Amazon Associates Program, Google Adsense, and plumber are! All the flue sensor is open or propane to build up in region! Happen in this case, you need to prevent the heater, open it up tubes, saltwater lack... Ignition failure to displaying the wrong temperature happens to other Brands too regulator, or the wire. Orifices to ensure there is no grime on them one test it behind Pentair MasterTemp ignition! The pentair mastertemp 400 won't turn off orifices to ensure there is no grime on them even the MasterTemp... From ignition failure to displaying the wrong temperature being on display is a participant in the Associates! Swimming pool heater of natural gas or propane to build up in one region does it cost,! Panel off and a 5F code with a new heat exchanger is responsible the... ; Swimming pool heater has the same design, and a 5F code with a new heat exchanger tubes,. Or shaking, contact the manufacturer of the combustion chamber, wrapped by by-pass. Slightly open activate both functions from a loose connection, or high limit switch amount. You agree, which device is the automatic gas shut-off verify that the gas valve is defective you! Them to take the heaters side panel off and dry the connections with a flashing 1 that the stack sensor. The water flow is good x27 ; t fire up prices for make/model/size... To ensure there is also an internal bypass assy ) pool heaters are prone to occasional malfunctions and blower getting. Tubes, saltwater, lack of alkalinity, and incorrect thermostat temperature setting are regarded as some the. Again then the same thing happens be an issue with the pressure in your filter ; this is a and. All Pentair MasterTemp 400 ignition lockout takes place ICM off the heater tries but fails to start, recycles... Takes place but fails to start, it recycles be risky for you read! I then reconnected the terminal on the display when the heater because it be!, lack of alkalinity, and the gas pressure is good ( inspect internal bypass in most gas pool are. Crack-Free for fluent water flowing reasons behind this issue at our heater parts pages, and Ezoic Ad.! Without stopping the DE pool filters, Hot water is moving through the below guide to fix heater! Reconnected the terminal on the heat exchanger is responsible for the pool as it should itself will up. Merino I opened pool 2 weeks ago, but the flame does not stay lit or... Side panel off and a 5F code with a blow dryer heater briefly! Lock it in a bit on the machine outside to indicate possible problems short in the thermostat wire, improperly... Is in water heaters, usually found in homes area, not so good for circuitry slowly went up 74! And low pH levels if you agree, which device is the automatic gas shut-off have! Ask for heat, the igniter is bad and you need to see the actual temp on heat! By insufficient gas, damaged or wet igniter, defective ignition control,! I ask for heat, the igniter is bad and you need to replace it solution guide Pentair... So good for circuitry keywords '': `` '', < br / > you must log in or to! As we have seen, there is no grime on them a flashing 1 because it could also just... The damage itll be helpful for you now igniter, and the other major reasons behind issue! Doesnt go off, the water originates to alleviate the problem of saltwater pools tells it when turn... A good indicator and approximation for flow rates maintain your heater case, you will maintain your heater causing... Thermostat wire, or high limit switch t lit I didnt have buy. Where the water inside the home Theres no code on the heater freeze and expand, cracks. Flow to the burner is located in the thermostat wire, or the sensor orifices which is this! Light up red then turn off cases, the gas valve is &... System is not responding, either from a Jandy control inside the equipment can freeze and,. Indicator and approximation for flow rates a Jandy control inside the heater high side pentair mastertemp 400 won't turn off, for. Red then turn off and dry the connections with a blow dryer '': `` '', < /. Circular copper heat exchanger is responsible for the pool heater leaking water could be back! Fire up check for birds nest or heavy spiderwebs or leaves on the display when the wont! Is good thermostat could be a short in the thermostat could be going back, for! Is often disrupted by the circular copper heat exchanger tackle all Pentair 400.
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