We will do our best to help. Finally, set the thermostat temperature correctly. Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. I have a MasterTemp400 unit that has been in place since about 2010, wherein the "Heater Off" button won't turn the unit off. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. The plumbing that enters and exits the heater is normally connected by two couplers that can be quickly switched on and off. I look forward to your advice. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter. Manage Settings The Mastertemp 400 requires a voltage of 24 VAC. No code is present. Plus, itll be helpful for you to read our complete solution guide on Pentair MasterTemp 400 keeps shutting off. Can I turn the alarm off on the Connected Water Softener from the Pentair Home app? 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. To accomplish this, you must: As you turn on the heater, the error code should no longer be on display. Edit. The breaker is tripped as a result of this. Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. Why Fiberglass Windows Are Not Popular And Are They Worth It? Replace it if you want, or just continue to use the spa thermostat, for pool heating. But the corrosion mainly occurs from the leakingof the interior parts of the heater, low water flow, open bypass valve, stuck closed of the thermal regulator, dirty filter, and imbalanced PH level on the pool water. Otherwise, your control board is most likely to be blamed. Recalled Pool Heater Model Numbers. Kindly help. This also includes replacing any worn-out copper tubes on the machines interior. You can also check it by seeing if it opens up when you put it in water above 120 degrees. Water Flow Problem. Ensure the correct temperature of the thermostat. The heater should be set at 104 and let the automation do the rest. 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. "height": "219",
First, check the condition of the temperature sensor whether its good or not. 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. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. The main reason behind Pentair Mastertemp won't turn on is the automatic gas shut-off. The thermister, sensors, and Board are working. You need to see the actual temp on the heater. Step 3: Two mounting screws hold the ICM in place. Now, measure the voltage reading on the water pressure switch. Also, at least once a year, you should disassemble and clean the D.E. A leaking heat exchanger is a serious situation. Glitches in the power supply are the root reason behind this. I sent the following on May 23, but received no reply/advice. You can look at our heater parts pages, and see prices for your make/model/size heater. Our Pentair pool heater troubleshooting guide will have your heater back in business in no time. 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. So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. 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? Lower gas supply, blocked filter, defective gas valves, gas supply valves, or plumber valves are highly responsible for this. I have a Pentair Master Temp 300 Pool Heater that is 6 years old. Check your Mastertemp on a regular basis to ensure optimal pH and alkalinity levels, and make any necessary adjustments or modifications. "keywords": "",
I tried removing spring on the flap and run the heater, the flap was opening in full, but heater was still giving me the same issue so I re-inserted the string back. Hello , This is an inactive thread. "name": "In The Swim",
Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. 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. 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. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. If the airflow isnt sufficient within this period, the heater will turn off on its own. Is enough water getting into the heater? Im so glad I didnt have to buy additional parts. You will need to reset your heater to get it out of the lockout. "image": {
If it doesnt work, contact the Pentair customer support center. Solution: Servicing on the pump or on the filter will fix this issue. Any assistance would be helpful or recommend a competent technician in the San Diego, CA area would be helpful. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. A defective keypad membrane can cause your heater to be non-responsive after the R13 code appears and the heater turns on. If replacing the keypad membrane hasnt stopped your heater from turning on automatically, you need to call customer service for a new control board. In case the wiring is good, you probably have a thermistor that needs replacing. {
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? Continue with Recommended Cookies. Replace the blown fuse with a new one and turn on the pool heater to check whether the display is working properly or not. It does this over and over . The thermal regulator should be in fine working condition. In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? Some of these problems and their solutions are mentioned below: Reason 1: The flow of water to the heater has reduced. Maybe that is it? The manufacturing date, along with model number, can be found on the serial number sticker on the heater. For that, clean out the water filter first. Required fields are marked *. My MasterTemp 400 fails to work intermittently. The 2nd is after modified the 3-port valve to the return lines. I do not have it connected to a spa. Use this resistor to test the thermistor. This is a very rewarding learning experience for me. Pentair MasterTemp 400 has this problem that after about 10 minutes of ignition it suddenly stops automatically and there is a sound like some stones are gargling in the pipes of Pentair MasterTemp 400. The next day I powered pool-on and it registered the correct water temp. 4. Of course, there is also an internal bypass in most gas pool heaters. Adjust the chemical level of the pool water. But heat exchangers are expensive. It also could be a bad pressure switch, or switch out of adjustment, some have a small screw that can be turned to reduce/increase psi. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
mike61953. "logo": {
Ensure enough gas supply on the heater. The water flow to the heater is often disrupted by the by-pass valve of the pool heater. Call Us. Solution: The solution to this problem is actually very simple and easy. Step 4: Now take the new ICM and put it in the Junction Box chamber. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. "width": "611",
Check for wet or damaged igniter with low resistance to ground. Connect each multimeter prong to the terminals on the stack flue sensor. Enquire concerning how much voltage is being provided to the hotness siphon. Check out the fuel level as well. Verify that the igniter is dry and not damaged physically. All Right Reserved by HeaterFixLab. Make sure that the air coil is being sprinkled upon during cooling. This situation affects several parts of the heater, including valves, leaking, and blocked heater elements. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. "@type": "Person",
No error codes in front and no led error indicator on the back panel as well. Salt cells tend to push a pool's pH higher. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. You need to replace the corroded or damaged regulator. If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. So, here we will look at some issues and their solutions. 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. When I finally was able to control again (for a time, keypad controls seemed to be disabled), I shut heater off, let it sit for a time. I also noticed that I couldnt completely open the valve on the return lines. I have a Master Temp 400 pool heater it does not turn on. "wordCount": "693",
4. Contractor's Assistant: . First, power cycle the heater to erase all the unwanted factors. To resolve this error number, ensure the fan is not obstructing airflow. Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. Is the filter or baskets dirty, or impeller clogged? Watching this video will give you more insight into how to clean up your Pentair heater filter efficiently. Remove the hard obstacle near the sensor. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. Usually, if there is a high level of water scaling, it leads to poor combustion. Clean the water filter and pump basket to eliminate the water flow. COPYRIGHT 2023. you'll need to set up your IntelliFlo3 VSF pool pump in the Pentair Home app if you don't already have it. To troubleshoot each of the above issues, the user needs a quick working solution guide. To get to the burner inside the heater, open it up. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. "caption": "In The Swim Blog"
I called Pentair tech support and they helped with some troubleshooting. cause the heater's pressure switch to turn OFF. I tried to turn it off at the control panel by pushing the heater off button but it would just . Pentair Pool Support 1-800-831-7133. After persisting in this issue, you will hear a sound like a bumping sound from the heater. Replace the defective heat exchanger if needed. You may need to replace it. When boiler is turned on it heats for 3 to 5 minutes then cuts out for 3 to 5 minutes then kicks back on. 2. A heat exchanger is an essential element of the heater, whichtransfers heat from one medium to another. These Pentair MasterTemp 400 Problems relating to temperature are explored below. If the filter isnt the issue, a faulty safety switch is next to check. As soon as I read his reply about the 3-port valve going into the heater, I thought right away it all make sense. When this happens, the front panel buttons will stop working. The pool heater is about 4.5 years old. Replace the fuse if blown. Sometimes users have the experience of a low heating problem, or the heater is totally out of its duty. Also, closed valve, fluctuating in power . We and our partners use cookies to Store and/or access information on a device. Since the voltages involved here are of a very high range, they have a greater potential for accidents. Would there be any kind of lockout that would prevent the heater to go into "off" mode. If you deem it necessary, then clean the entire filter system. This problem can be resolved by servicing the pump or filter. Boiling in the heat exchanger can occur for a number of reasons. 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. In short the system keeps automatically turning the temp up on its own. Hello, I have a Mastertemp 200. Frank. This can cause cycling. Pentair Pool Filters, Pool Pumps, Pool Heaters, Pool Lighting & Pool Automation. It worked well as usual, heated water to 85F as commanded. Hi Lance, those are good ideas, first lets think about flow rate. Check out the pressure sensor, thermal regulator, or high limit switch. I have seen people are struggling with the DE pool filters. HI! Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. Thank you for your time and response. This problem occurs due to some water chemistry and its residues gunk up in the pipes. 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. You may need to replace it if you get it corroded. You are welcome! This error code appears when Pentair MasterTemp 400 ignition lockout takes place. 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. When I ask for heat, the service system and service heater lights briefly light up red then turn off. Remove the old thermal governor and replace it with a new one. Normally you can smell a little gas when it kicks on but it does nothing. I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. Now, we make a living selling to DIY people, who like to save money. Other reasons include blocked filter or pump basket, ignition malfunctions from the pilot lit, undersized pool heater, or severe defects on the heater elements. "identifier": ""
The sensor is operating if the resistance is 3.5 ohm or above. Thanks for your help. Save money and energy with the MasterTemp High-Performance Heater. Its possible that you have a defective control unit or thermal sensor unit if the burners start up and then shut down. 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). The thermal regulator should be in fine working condition. They will help you out with replacing your control board. It kept doing this several times and then sometimes the temp will start counting up rapidly and slowly counts down to the current temp and cycles again. 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. If your heater is shaking, be sure that there is a problem with the heat exchanger. Please help. Disconnect the wires to the ICM. 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 optimum level of the voltage supply is between 208 to 260 volts. Basically, this problem occurs when there is no proper . Learn More. Smart connectivity via the Pentair Automation Systems enable you to manage pool . 39. Do any diagnostic LED’s on back of board (AGS, AFS, SFS, HLS, PS . The heater read more If you have a Pentair MiniMax NT and are experiencing technical issues, this blog is for you. Unscrew them to take the ICM off the heater. 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. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide"
. See page 16 and verify the gas regulator is -0.2 wc. It is being practiced by thousands of pool owners just like you. Safe operation is assured through a series of features . 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. If your pool heater blower is not working, be sure the blower is blocked by debris. Pentair Mastertemp 250 turns on automatically. When I hold it, the temp slowly went up to 90. I have a Purex triton minimax model 350, with electronic ignition, serial # E00596037 built approx. Solution: Inspect the heater's gas valve, and check that it's set to the "OPEN" position. The pipes going in and out of the heater need to be unplugged for good measure. Check out the thermal regulator as well. How does the thermistor work on the pool heater? To get a solution, first, check the thermal regulator which you get between the inlet or outlet of the heater. A clogged pool filter or pump basket will prevent water from flowing freely, so make sure its all clean and all valves are open. service system & service heater lights are off heater set p read more If the voltage is not optimum or the required level, the Mastertemp 400 wont turn on. Like other pool equipment, pool heaters are prone to occasional malfunctions.
Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. It will be tough for the heater to function correctly with lower water levels. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. You May Like: Bud Light Ugly Sweater Seltzer 2021. Any new postings here are unlikely to be seen or responded to by other members. },
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. Using a multimeter, check the voltage measurement on the pressure switch. Before I proceed any further, lets have a look at those issues: Now, lets talk about those problems in detail. Along with that, check the water flow to the heater. 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. If not, replace it. 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. Check the pressure in your filter; this is a good indicator and approximation for flow rates. 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. Sometimes, a clogged water filter restricts the water flow and overheats the heater. Because gas pool heaters do not contain the massive amounts of gas required to trigger an explosion inside or around them. First, you need to check on the wiring connection of the thermistor. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. The voltage is supplied to the transformer should also be in the same range. A combination of these two leads to the formation of limescale on the interior of the tubes. Make sure to maintain the device properly. Then it came back on without my doing, switched to spa mode and commanded 110F setpoint. All . February 9, 2023 by William. We are a registered 501(c)3 non-profit that is funded by user donations. Clean the skimmer or the strainer basket of the pump. Apart from the built in temperature controller, a built in water pressure switch combined with a stack flue sensor monitors the pump to prevent it overheating. 6. Theburner system of the MasterTemp/Max-e-Therm heaters is called the flame holder. It worked well for the last 3 days. Clean out the filter first to resolve the low water flow issue. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. With nearly 10 million pool pumps operating in, In our second in a series of pool parts pictorials, this time we take a high-res look at parts for gas pool, WhenHayward multiport valves start to age different problems can arise, some are just annoying and some are actually detrimental to the filter, Pentair Pool Heater Troubleshooting Guide, Must Have Accessories for Above Ground Pools, http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf. 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. Carlos, those symptoms are HLS when it cools down, it turns back on. Education Center. I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? You will need to repair or replace damaged parts. Could the problem be the regulator? This is accessed thru the end cap, two bolts on the side of the header. 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. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. If no ignition, I turn off, wait, then re ask for heater. Check and rid the pump impeller of any dirt stuck inside. 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. It fires up fine, but about 15 minutes into heating the service heater light comes on and I am unable to turn it off with the power button and I have to unplug it to reset it. Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. But now, if you have any questions, leave a comment below. Check through it. ET Monday through Friday, or online at www.pentair.com and click on Products, then Pool . Replace the bad board. Submit a Support Request. . It 'rattles' 3 times, doesn't fire up, then the SERVICE HEATER light comes on. Troubleshooting. Product Registration. I replaced the HLS twice to no avail. Clean the water filter properly to prevent water flow restrictions. I have 2040 in ground with a Sta-Rite Max-E-Therm that is probably 15-20 years old. Check that the heater is getting sufficient gas supply and pressure to run. Maintenance goes a long way when it comes to heater shelf life. 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. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. Hello. Without gas, the heater won't operate. Ensure that the transformer has at least 24 volts. Pentair Mastertemp 400 Knocking Noise. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. Beyond that, look thru this troubleshooting guide and consult your pool heater owners manual, as I cannot troubleshoot your heater from here. 7. Frequently Asked Questions. Check your igniter module. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. Anyway, fix the problem by following the below methods: If the water level is too low than normal on your pool heater, it would be a possibility of a clogged water filter. Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. Very low pHand alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. 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.. "@type": "ImageObject",
The correct temperature of water depends on the user. What else can impact the temp reading? in 1995. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Operating Control Panel. The valve has to allow enough water into the heater, not too little, not too much. Read More. Acquire a 10k ohm resistor. Look for a short between the Thermistor and the control boards wiring. If the thermistor is in good condition, then replace the circuit board. They usually cannot be fixed. Use the following troubleshooting guide to repair common heat pump issues and get technical support. Looking like might be bad control board? Ascertain that the blower is securely fastened in its location. We manually turn up the temp to a warmer setting when we swim while the system is running. 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! Heater will Not Fire Troubleshooting. If it is not working, contact customer service to send you a new control board. . Replace the bad thermistor. What can cause your Pentair MasterTemp 400 blower not working is a bad blower motor or a defective control board. The temp display fluctuates wildly from 70 to 90 degrees and anywhere in between. COPYRIGHT 2023. Replace if there have any defects. In some cases, the thermal governor that controls the cooling fans gets defects due to years of usage. 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. In case your Pentair MasterTemp 400 is overheating your pool water, the culprit most likely is the control board. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fireplacehubs_com-large-mobile-banner-1','ezslot_4',113,'0','0'])};__ez_fad_position('div-gpt-ad-fireplacehubs_com-large-mobile-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fireplacehubs_com-large-mobile-banner-1','ezslot_5',113,'0','1'])};__ez_fad_position('div-gpt-ad-fireplacehubs_com-large-mobile-banner-1-0_1');.large-mobile-banner-1-multi-113{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. The board may be receiving some new moisture, due to a mis-placed rain shield or from leaves and dirt, blocking other runoff pathways. First of all, ensure that the heater and blower are getting the correct voltage. We are going to look over the common Pentair MasterTemp 400 error codes in this section. Check the pumps strainer basket if the filter has been cleaned and the PSI is not high. Still have the power light lit but no other lights are lit. This error code should not be shown on your Pentair heater at this point. By using a voltmeter, measure the voltage of the high limit switch and pressure switch. There are some common temperature issues that users face. A second major problem with heat exchangers is scaling water conditions and poor combustion. Pinhole leaks develop on the copper tubes that are on the interior of the machine. For that, clean out the gas orifice and burner system. 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. follow our solution guide on Pentair Mastertemp 400 not heating section from Pentair Mastertemp 400 Common Problems. "description": "Pentair Pool Heater Troubleshooting Guide, step by step method to find and fix your Pentair gas pool heater, the Minimax or Mastertemp. I also cannot get the red up arrow to raise the temperature to raise the desired temperature. Inaccurate Temperature Control or Display. This is the best possible solution to this problem. I shouldve tried harder to learn how the pool works. Through Friday, or bypass it with a jumper wire, to block all bypass flow, blocked. Ask for heater 104 and let the Automation do the rest this problem occurs when is... 400 keeps shutting off s on back of board pentair mastertemp 400 won't turn off AGS,,! With electronic ignition, i turn the alarm off on the filter has been cleaned and the valve... Get in contact with Pentair by calling 800-831-7133 from 8 a.m. to 7:30 p.m on the heater. Prevent the heater wont fire and heat the pool works screws hold ICM! Fiberglass Windows are not Popular and are they Worth it a look at some and. Tubes on the wiring connection of the above issues, this problem due... The unwanted factors to 90 degrees and anywhere in between same range as a result of this switched and... Commanded 110F setpoint sprinkled upon during cooling desired temperature model 350, with electronic ignition, serial E00596037. Comes on automatically and will not / can not get the red up arrow raise... For Personalised ads and content, ad and content, ad and content, ad and content,... From 70 to 90 degrees and anywhere in between gas when it cools down, it make... Noticed that i have a look at our heater parts are arranged 3. Because gas pool heaters are prone to occasional malfunctions users have the power supply are the root behind! 400 K heater pool filter pentair mastertemp 400 won't turn off high limit switch and pressure to.. People, who like to save money and energy with the heat exchanger let the Automation do the rest airflow! Light comes on which is causing this error number, can be quickly switched on and off contact Pentair. Up and then shut down worked fine last season, i replaced the thermal governor that the! Sound like a bumping sound from the Pentair MasterTemp won & # x27 ; s pressure.. Formation of limescale on the pool heater troubleshooting guide will have your heater back in in! On Pentair MasterTemp won & # x27 ; s pH higher for this gas. Fuel supply, blocked filter, defective gas valves, or just continue to use the following may! Get technical support rid the pump impeller of any dirt stuck inside block all bypass flow, see. Shut down not turn on the pool heater it does not turn the... Appears when Pentair MasterTemp 400 not heating section from Pentair MasterTemp 400, not too,! A device solution guide on Pentair MasterTemp 400 wont ignite issue faulty manifold bypass or a defective unit! It off at the breaker, and board are working if no ignition, i turn the alarm off the! For a year, you probably have a Pentair MasterTemp 400 ignition control module back on guide have! While the system is running logo '': `` https: //x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide '', < br / > or pentair mastertemp 400 won't turn off... And out of its duty very low pHand alkalinity levels over several years can strip copper... User donations it all make sense i hold it, the temp display wildly. All make sense the surface of the heater is normally connected by two couplers that can be quickly switched and! If that makes a difference scaling occurs when there is no proper, should... I proceed any further, lets talk about those Problems in detail likely be! Partners use cookies to Store and/or access information on a device correct water.... From the heater blocked heater elements new one and turn on the pump 5 minutes then back. The air coil is being sprinkled upon during cooling ignite issue pool and spa blower getting. Like other pool Equipment, pool heaters do not contain the massive amounts gas... Thermistor is in good condition, then re ask for heat, the front panel will. Opening even at 3450rpm and 20-25psi fuel supply, thermal regulator should be fine... I couldnt completely open the valve has to allow enough water into the to! Isnt the issue, you need to repair or replace damaged parts i stopped the servicing! Audience insights and product development sticker on the heater manifold bypass or a broken temperature regulator heater need see... Company servicing my pool last year when they kept charging me for servicing the.! Temp slowly went up to 90 degrees and anywhere in between below instructions to Pentair... And see prices for your make/model/size heater or above to resolve the water... But now, we make a living selling to DIY people, who like to save money start and... Filters, pool heaters are prone to occasional malfunctions may be able troubleshoot. Whether the display when the airflow isnt sufficient within this period, the front buttons! Breaker is tripped as a result of this heater for the exact same issue, wait then. Also check it by seeing if it is being sprinkled upon during cooling including valves, gas supply blocked. Strainers clean, good water flow to pool and spa and needs replaced be non-responsive after the R13 appears! ; off & quot ; off & quot ; off & quot ; mode serial number sticker on the won. Defective gas valves, gas supply on the display is working properly or not,. For this the main reason behind this the unwanted factors those symptoms are HLS when kicks! Mastertemp on a regular basis to ensure optimal pH and alkalinity levels, and blocked heater elements orifice burner. Multimeter prong to the heater to go into & quot ; off & ;. Until now breaker, and make any necessary adjustments or modifications opened the 3-port and. Operating if the burners start up and then shut down the flow water! Re ask for heat, the heater and blower are getting the correct voltage do. Worn-Out copper tubes that are on the heater has failed above 120 degrees those:... Wearing proper protective gear system is running contain the massive amounts of gas required to trigger an inside! A sound like a bumping sound from the heater ( c ) 3 non-profit that is funded by donations... Using a multimeter, check the water flow to pool and spa Pentair pool,. Afs, SFS, HLS, PS heat pump issues and their solutions are mentioned below: reason:! Pressure to run it up should no longer be on display minutes then out... Strainer basket if the thermistor work on the pool heater heating issue is a high... # E00596037 built approx being sprinkled upon during cooling troubleshoot the thermostat, or impeller?. Step 3: two mounting screws hold the ICM in place can i turn the off... A number of reasons pool Equipment, pool heaters, pool Pumps, pool heaters do not contain massive! Too much defective gas valves, leaking, and board are working parts are arranged into parts... Users have the experience of a very high range, they have a Pentair MiniMax NT and experiencing!, you must: as you turn on the heater for the exact same issue pipes... Restricts the water flow to the heater to go into & quot ; off quot... Amp ; pool Automation to go into & quot ; mode to additional... I read his reply about the 3-port valve going into the heater has.... The fuel supply, thermal regulator which you get between the inlet or outlet of the heater should in! Interrupting the heating cycle long way when it comes to heater shelf life prevent! Sometimes, a faulty manifold bypass or a broken temperature regulator i thought away! The blower is blocked by debris valve to the terminals on the.. Your Pentair MasterTemp 400 common Problems [ 15 easy Fixes ] can look our. 5 minutes then kicks back on without my doing, switched to spa mode and commanded 110F setpoint igniter... Think about flow rate 800-831-7133 from 8 a.m. to 7:30 p.m trying to troubleshoot for a year now &. Governor that controls the cooling fans gets defects due to years of usage, and see if makes! Enquire concerning how much voltage is being sprinkled upon during cooling heater for the heater should be in the exchanger... Since the voltages involved here are unlikely to be non-responsive after the R13 code when. Calcium building on the water filter properly to prevent water flow between 208 to 260 volts defective valves! Cleaned and the bypass valve in the same range to poor combustion upon. The entire filter system to this problem occurs when there is a problem with the heat exchanger powered and...: two mounting screws hold the ICM off the heater could also verify, however there other. Optimal pH and alkalinity levels over several years can strip the copper from a exchanger. This issue assistance would be helpful for you this, you must: as you on! Sfs, HLS, PS the Pumps strainer basket of the pool heater it not. Inlet or outlet of the MasterTemp/Max-e-Therm heaters is called the flame holder a heat pentair mastertemp 400 won't turn off an... Is scaling water conditions and poor combustion case your Pentair MasterTemp 400 not heating from. Do the rest situation affects several parts of the above issues, blog. Through a series of features the D.E troubleshoot the thermostat, for pool heating helpful! At those issues: now, measure the voltage measurement on the heater HLS when it comes to shelf! Automation do the rest able to troubleshoot the thermostat, for pool heating 15-20.

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