Clean up all the flue sensor orifices to ensure there is no grime on them. The pool heater is about 4.5 years old. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. Although, theres strong water coming out of the 2 return lines. If not, replace it. Ive replaced it twice in the past two years and it may need replacing again because I smell gas but the heat never turns on. I can get it to go Off and display panel to go blank by manual turning off the AC power at the circuit breaker panel. Replace the defective parts. If it is set to 104 out there and it says 104 while your EasyTouch says 98, you have a bad water sensor on the ET. Do we have to adjust the temperature and then hit the select button to lock it in? Read More. Follow this video below for instructions on Pentair MasterTemp 400 control board replacement. "identifier": ""
How do you test a Pentair stack flue sensor? Pentair Mastertemp 400 Common Problems [11 Easy Solutions], 1. In case your Pentair MasterTemp 400 is overheating your pool water, the culprit most likely is the control board. They usually cannot be fixed. Enquire concerning how much voltage is being provided to the hotness siphon. Check to see if anything is stuck on the stove. But, is there a way that I can validate that there is really an issue? A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. It was installed where one return line is completely open and the other one is only slightly open. Use a heat exchanger made of cupro-nickel to resist corrosion. Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. 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. Change the waters chemicals to achieve equilibrium. Any help would be greatly appreciated. Broken safety switches, faulty transformers, and wrong temperature settings are also responsible. So the best possible solution in this regard is to acquire a new thermal governor. Check your igniter module. Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages) POOL AND SPA HEATER (FOR OUTDOOR USE ONLY) Brand: Pentair | Category: Heater | Size: 10.86 MB. "url": "https://blog.intheswim.com/"
Sure, the most immediate and direct source of information would come from Pentair themselves, but it doesn't address the need for immediate guidance a pool owner may be searching for online. Hopefully, you will . Mastertemp 400 Safety Features. Looking like might be bad control board? "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide"
In short the system keeps automatically turning the temp up on its own. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. To fix your pool heater issue, make sure the water flow is sufficient & valve is open as the filter is clean. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Along with that, check the water flow to the heater. As it plays a big role in continuing the heater function, thus there has a high risk of corroding this part. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. 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. Simply unplug these and turn them off for the winter. JavaScript is disabled. Fault Condition: HIGH WATER TEMP Alarm: Water . Hopefully, now you have a crystal clear idea of each of the Pentair Mastertemp 400 problems. 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. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. To confirm that is the problem simply screw the cap back on and leave out the spring/thermostat and turn on the heater to see if that solves the problem. Besides, the heater turning on automatically, the flame wont stay lit, the blower not working, low water flows, error codes, a defective control panel, dirty filter, noise, freeze damage, and heat exchanger problems can trouble you while using Pentair MasterTemp. Leaking heat exchangers are often confused with sweating or condensating heat exchangers. I also cannot get the red up arrow to raise the temperature to raise the desired temperature. So you may be better off buying a new heater entirely instead of replacing the heat exchanger. We can expect that whatever the issue will persist, you will easily fix it by following our guide. The heater is a 400k model 460736 installed about 2006. . Replace the bad switches. 13 years ago. Make sure that the filter of the heater is cleaned as well. Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. 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. Solution: Following the same logic as the last step, walk over to your gas supply and check that's its gas line valve is also set to the "OPEN" position. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. 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. It can even be dangerous. Among the most common problems associated with all pool heaters and not the Mastertemp 400 alone is inaccurate temperature control. Step 2: Disconnect the system from the Max-E-Therm heater. If the automatic gas shutoff switch has tripped, you need to reset it. 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. "@context": "https://schema.org/",
Outdoor Shelder, Horizontal Venting - Using Single-Wall Stainless Gas Vent, Connecting Single-Wall Stainless Steel Vent to the Heater, Horizontal or Vertical Venting Flexible Duct (Flex-Vent), Combustion Air Supply / Corrosive Vapors and Possible Causes, Direct Air Intake Duct with 3-Inch PVC Pipe (Indoor Installation), Remote Control Connections (Fireman's Switch Connection), Connecting the Mastertemp Heater to the Intellicenter Control System Load Center Via RS-485, Mastertemp Heater Electrical Schematic Ladder Diagram, Basic System Operation / START-UP OPERATION - HSI (Hot-Surface Ignition) Lighting/Operation, Safety Controls (Air Flow Switch / Water Pressure Switch / Hight Limits / Operation of Ignitiion Module), Control Panel / Menu Navigation / Operating the Heater, Heater will Not Fire Troubleshooting (A, B), IGN Is on ALARMS: AGS, AFS, HLS, PS, E01 or 126 / SFS, Liming the Heater - Pressure Relief Valve, Spring, Fall (Autumn) and Winter Operation, Maintaining Pool Temperature / Energy Saving Tips, Pentair MASTERTEMP 400 HD Installation And User Manual (54 pages), Technical Data / Heater Identification Information (HIN), Indoor Venting-General Requirements Heater Clearances / Outside Vent Removal ), Horizontal or Vertical Venting - Using Single-Wall Stainless Gas Vent, Fireman's Switch Connection/Remote Control Connections, Mastertemp Wiring Diagram / Electrical Schematic Ladder Diagram, Initial Troubleshooting and Troubleshooting Chart, LED Diagnostics (AGS, AFS, HLS, PS Thermistor), Pentair MASTERTEMP 400 HD Brochure (4 pages). Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. We will do our best to help. Curt could be a short in the thermostat wire, or the thermostat could be going back, check the wire connections for rust/corrosion. Lets start. I run the heater and this time it did something different. Inaccurate Temperature Control or Display. Thanks for your help. This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. A pool technician replaced 3 sensors however it still does not work. If the problem persists, remove the temperature regulation completely and see whether the heater runs. If it doesnt work, contact the Pentair customer support center. Usually, pool water needs a balanced amount of chemical levels on the surface, which acts as a barrier against corrosion. I only own a pool. Not only for Pentair, but it also happens to other brands too. "wordCount": "693",
In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? Its possible that you have a defective control unit or thermal sensor unit if the burners start up and then shut down. "name": "In The Swim",
The heat exchanger tubes can be replaced with you using the existing front and rear headers (aka manifold), and hi-limits, and all the rest of the parts. $4100 is not cheap. It usually drips inside of the heater, making people think that their heat exchanger is leaking, when its not. Do this test with the water still running. Ensure that the burner flame holder is grounded properly. Solution: Alter the chemistry of the water and reach an equilibrium. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. 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. "logo": {
But when the amount exceeds the limit, the heater catches it as a problem. Check the pressure in your filter; this is a good indicator and approximation for flow rates. Wiring it to a 2 wire remote interrupts the circuit for it to power up. Acquire a 10k ohm resistor. This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. Check that the heater is getting sufficient gas supply and pressure to run. Test your fill water too. Cant figure out why it keeps reverting back to a higher temp on its own when weve turned it down. Hi Barbara, I call that cycling on and off, and that can be related to low water flow, and jumping out the pressure switch can tell you if flow is the problem, in the absence of flow error codes. Our Pentair pool heater troubleshooting guide will have your heater back in business in no time. If replacing the keypad membrane hasnt stopped your heater from turning on automatically, you need to call customer service for a new control board. If the supply valve is OFF, turn it ON. 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. They have a have an SF code for Sensor Failure. 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? In case the issue persists, replace the control board. Fortunately, you simply need to remove and clean the filter and make sure all the valves are open. Save my name, email, and website in this browser for the next time I comment. so does the heater actually turn off when you use the automation to turn it off? Usually, if there is a high level of water scaling, it leads to poor combustion. Wash them out very carefully with a hose. Because gas pool heaters do not contain the massive amounts of gas required to trigger an explosion inside or around them. Any new postings here are unlikely to be seen or responded to by other members. See page 16 and verify the gas regulator is -0.2 wc. If the temperature outside is chilly and the defrosting feature is not enabled, then enable the feature. Your pool heater needs to be prepared for the winter so that it doesnt incur any freeze damage. We have a Pentair minimax 100 Dsi. Examine the area for any clogs or impediments. Maybe that is it? Chemical or sanitizer damage and loss of connection to the pressure switch also lead to this issue. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. It does heat the spa about 1 degree every cycle. We have a Pentair 300 for both spa and pool heating. Worked for 1 weekend, now won't fire up. This kind of damage can be very costly. Verify that the gas valve, supply valve, and plumber valve are totally opened. The main function of the HLS on any pool heater is regulating the water temperature of the unit. Replace the blown fuse with a new one and turn on the pool heater to check whether the display is working properly or not. SOURCE: Pentair MasterTemp 400 Heater Will run fine for. A leaking heat exchanger is a serious situation. I have a Pentair Master Temp 300 Pool Heater that is 6 years old. Ryan, start with water flow, make sure that the filter and baskets are clean and the filter pressure is normal, and water is not bypassing the heater, externally, or internally from the internal bypass, located in the front header. The insufficient water level in the pool and incorrect voltage supply in the pressure switch is also responsible. If the filter isnt the issue, a faulty safety switch is next to check. you'll need to set up your IntelliFlo3 VSF pool pump in the Pentair Home app if you don't already have it. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. One of the biggest fears any owner of a Mastertemp has is the corrosion of the heat exchanger. Plus, itll be helpful for you to read our complete solution guide on Pentair MasterTemp 400 keeps shutting off. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. If the airflow isnt sufficient within this period, the heater will turn off on its own. 3. This error code appears when Pentair MasterTemp 400 ignition lockout takes place. 3. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. Examine the connection between the burner and the gas and other lines to see if it is secure. Otherwise, it will be difficult to verify. 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. You may need to replace it. Replace the defective one. Other reasons why the heater is not turning on include: Faulty igniter Some of these problems and their solutions are mentioned below: Reason 1: The flow of water to the heater has reduced. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. Please help. To fix your pool heater issue, check the gas valve removing the wire that runs between the thermostat & the gas valve. "width": "611",
Consumers who have purchased one of these products can get in contact with Pentair by calling 800-831-7133 from 8 a.m. to 7:30 p.m. For a better experience, please enable JavaScript in your browser before proceeding. Could the problem be with the flow or pressure sensors? 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. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. You can clean your own pool filter easily. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. If the pool is bigger corresponding to the size of the pool heater, itll take time to heat up the heater. After every one to three months or when you get 510 PSI of pressure on the air filter, your Pentair MasterTemp 400 D.E. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. "datePublished": "1/8/2019",
Otherwise, your control board is most likely to be blamed. Once you remove the cap pull out the spring and the regulator will be at the end. Cleaning your heat pump on a regular basis will help you avoid this problem. After about 30-45 seconds, the heating green light goes off and it shows service heater and the panel Your email address will not be published. Pentair Mastertemp 400 Heat Exchanger Corrosion, 9. The 2nd is after modified the 3-port valve to the return lines. In some cases, the thermal governor that controls the cooling fans gets defects due to years of usage. "author": {
Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. you won't get any ignition in your heater. 6. There is no error code or red service heater light on. There are some common temperature issues that users face. 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. I also noticed that I couldnt completely open the valve on the return lines. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. So in this case, you need to prevent the damage. 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. I just didnt trust them anymore. A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. It is also advised to change the entire system if required. What else can impact the temp reading? 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. This is the best possible solution to this problem. Unfortunately, the only way to solve this issue is to get a new heat exchanger. Gentlemen, "thumbnailUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Yes, there are some Pentair Mastertemp 400 common problems but its still a good one and highly recommended. Boiling in the heat exchanger might be caused due to a variety of reasons. },
You must log in or register to reply here. Alternatively, the temperature display can sometimes be quite inaccurate. Then, replace the faulty heater part or parts. Now, check out the voltage supply to the control board. When the condenser coil on your heat pump gets unclean, it needs to work more to provide equal amounts of heating as normal. Clean the water filter properly to prevent water flow restrictions. Have a BRAND new Pentair Mastertemp 400. To troubleshoot each of the above issues, the user needs a quick working solution guide. Bought the house 2.5 years ago. "caption": "In The Swim Blog"
To safeguard your heater from freezing temperatures, do two things. I do not have it connected to a spa. Pentair Mastertemp 250 turns on automatically. This happens due to a plethora of causes, such as: First, ensure that the machine that pumps water is turned. Additional Resources. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. It could be plugged, or the bypass valves could be sticking. Product HIN / Code Requirements / Safety Warning. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. They can cost you up to 50% of a new heater. Verify pressure tap between gas valve and blower inlet. If it is not working, contact customer service to send you a new control board. Salt cells tend to push a pool's pH higher. First, check that the fuel supply is adequate and the gas pressure is good. There are certain effects of scaling, such as: Change the heat exchanger and get a new one. There are two. As your unit is a new one, to fix your pool heater issue, it would be wise to contact the Pentair customer support center or your local Pentair dealer. Posted on Nov 23, 2010. Using cupro-nickel allows you to provide machine protection against saltwater erosion. Problems and Corrective Action. 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. Set the temp higher than your pool water. "
Once set up, select the . People often confuse or term this leakage as sweating. Thank you! 1st one is the initial issue. The air space above the burner heats up, which heats the copper finned tubes laying on the top of the combustion box. "@type": "ImageObject",
Look for a short between the Thermistor and the control boards wiring. It should be damaged and crack-free for fluent water flowing. Verify the control board is in well-working condition. Clean the skimmer or the strainer basket of the pump. Is this normal? It means that the ignition control module has failed to ignite the heater. Pentair Mastertemp 400 keeps shutting off, Pentair MasterTemp 400 display not working, Pentair MasterTemp 400 blower not working, Torpedo Heater Keeps Shutting Off [9 Easy Fixes], Comfort Zone Heater Not Working [7 Easy Fixes], complete solution guide on Pentair MasterTemp 400 keeps shutting off, Richmond Tankless Water Heater Troubleshooting [A Complete Guide], Richmond Electric Water Heater Troubleshooting [A Complete Guide], Richmond Gas Water Heater Troubleshooting [A Complete Guide], Richmond Water Heater Blinking Light Codes [Why+ How To Fix], Richmond Water Heater Gas Valve Problems [Why + How To Fix]. View online or download Pentair MasterTemp 400 Brochure. Keep in mind, you have two sensors. I have a MasterTemp400 unit that has been in place since about 2010, wherein the "Heater Off" button won't turn the unit off. 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. Besides, the heater turning on automatically, the flame won't stay lit, the blower not working . Pentair Mastertemp 400 Heater Not Turning On, 2. We are always ready for your assistance. I look forward to your advice. After about 15 seconds I hear a clicking noise then the heater light stays on for about 5 seconds, then starts blinking again. First, locate the thermistor of your pool heater. Step 1: Take off the left side panel of the heater. No mater how many times I press the Heater Off button, the heater does not go off and the display panel does not go blank. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Replace the fuse if blown. The automation system controls the heater and tells it when to turn on / off. The heater works fine but the temp display shows 55 deg when the water temp is 90 deg. The heater does not ignite. Make sure all the valves are opened and in good working conditions. I dont see my trouble addressed. Check the wire going to the sensor and the sensor itself. The water inside the equipment can freeze and expand, causing cracks in your heater. "caption": "In The Swim Blog"
Did you replace both Hi Limit Switches? A heat exchanger is an essential element of the heater, whichtransfers heat from one medium to another. Beyond that, look thru this troubleshooting guide and consult your pool heater owners manual, as I cannot troubleshoot your heater from here. Replace it if you find no voltage there. This residue is usually formed at the bottom. They will help you out with replacing your control board. . The Service Heater light comes on when the heat shuts off, seems to reset after a minute or so, then the Service Heater light turns off and the spa starts heating again. Check for wet or damaged igniter with low resistance to ground. Would there be any kind of lockout that would prevent the heater to go into "off" mode. Is getting sufficient gas supply and pressure to run out why it keeps reverting back a! Issues that users face winter so that it doesnt work, contact the Pentair MasterTemp K... 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Switch also lead to leaking enabled, then see what can be done to improve flow rate was where... As usual the wire connections for rust/corrosion as normal is clean [ 11 Easy ]! 400 alone is inaccurate temperature control their heat exchanger simply need to reset it 400 control board replacement the heater! There be any kind of lockout that would prevent the heater runs Pentair MasterTemp 400 overheating! Issues that users face problem be with the error codes shared by both models avoid this problem no! High risk of corroding this part sometimes be quite inaccurate of usage test a Pentair flue. It plays a big role in continuing the heater and tells it when turn... The thermostat wire, to determine it has failed to ignite the heater works fine but the temp display 55! Grime on them must log in or register to reply here clean, good water flow restrictions sensor Failure saltwater... Properly or not near the bottom of your pool heater issue, the... 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Your Pentair heater is connected to a harmed transformer or a low stockpile of voltage to the sensor orifices ensure. Really an issue with the fuel supply, thermal cutoff or Hi-limit switch interrupting the heating cycle to... The filter and make sure the water and reach an equilibrium has is the possible..., but it also happens to other brands too did something different the feature the appropriate amperage for heater... Automation to turn it on not enabled, then enable the feature faulty safety switch is open as filter.