Thank you Frank "url": "https://blog.intheswim.com/"
"caption": "In The Swim Blog"
It doesnt sound like the heater is even trying to kick on. February 9, 2023 by William. Test the resistance of the pressure switch. 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. You need to take apart the filter cover and get the elements out. We have a new Pentair Mastertemp 400. The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. Home / Pool Repairs / Equipment Repairs / Pentair Pool Heater Troubleshooting Guide. This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. Top 3 pool pump problems, of course! To accomplish this, you must: As you turn on the heater, the error code should no longer be on display. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Beyond that, look thru this troubleshooting guide and consult your pool heater owners manual, as I cannot troubleshoot your heater from here. You may require cleaning your filter this way twice a year instead, depending on consumption (particularly if your pool is open all year). You May Like: Bud Light Ugly Sweater Seltzer 2021. 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. Take the heaters side panel off and dry the connections with a blow dryer. Possible Cause: Gas supply valve. "description": "Pentair Pool Heater Troubleshooting Guide, step by step method to find and fix your Pentair gas pool heater, the Minimax or Mastertemp. "primaryImageOfPage": {
. 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 designed my home myself with the help of my beloved wife. You must assess the heater, compare it to its overall age, determine whether there is a lot of rust and corrosion development at the bottom of the container, inspect the combustion firebox for broken fire tile, and so on. A clogged pool filter or pump basket will prevent water from flowing freely, so make sure its all clean and all valves are open. The Pool company said that it is probably condensation. we have a Pentair mastertemp 400K; We just had it installed last fall. The first is to remove the drain plug, which is normally found near the bottom of your Pentair heater. It mainly happens if the discharging of the flow of air has been blocked or restricted. Solution: Servicing on the pump or on the filter will fix this issue. To fix your pool heater issue, check the gas valve removing the wire that runs between the thermostat & the gas valve. We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. I have replaced the Stack sensor thinking that it was the problem. Pentair Mastertemp 400 Common Problems [11 Easy Solutions], 1. Its a fun combination of plumbing, wiring and gas. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. So I heed the advise although the flapper in the check valve still doesnt open completely, the heater started working again. },
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First, check the condition of the temperature sensor whether its good or not. Remove the hard obstacle near the sensor. It fires up fine again then the same thing happens. Here are the video links. Replace everything in its proper location. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. The main function of the HLS on any pool heater is regulating the water temperature of the unit. {
To reduce the number of minerals from the pool water surface, you will need to replace the heat exchanger with the new one. Set the temp higher than your pool water. Clean the clogged water filter to ensure a fluent water flow. So, was going to need to be replaced at some point. my pentair mastertemp 400 heater will come on, pilot will light and heating green light comes on. I have a Pentair Master Temp 300 Pool Heater that is 6 years old. Hi Hugh, is it a Hayward heater? View online or download Pentair MasterTemp 400 Brochure. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. service system & service heater lights are off heater set p read more A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. I replaced the thermistor and still have the same problem. Pentair Mastertemp 400 Heater Not Turning On, 2. It should be damaged and crack-free for fluent water flowing. Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. 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. A tough, rustproof composite exterior handles the heat and weathers the elements. 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. Water Flow Problem. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. Search. Maybe that is it? There are some common temperature issues that users face. Pentair Mastertemp 400 Knocking Noise. But heat exchangers are expensive. It does this over and over . Check your igniter module. As always, use caution when working with your heaters electrical system. You will need to repair or replace damaged parts. Combustion appears normal, but the flame does not stay lit. 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). Is the filter or baskets dirty, or impeller clogged? If your Pentair Mastertemp 400 won't turn on, for sure, the heater is facing a power supply degradation problem from the source. My heater also powers up, displays lights, without anyone touching it. TROUBLESHOOTING OF AFS ERROR LIGHT LEADS ME TO FIND A COMPLETELY DIFFERENT AND MUCH MORE COMPLICATED AND EXPENSIVE ISSUE.DON'T ASSUME YOU HAVE A DEFECTIVE AF. ******************************************************** Water running out from the heater could also verify, however there are other things inside the heater that can leak water. Maintenance goes a long way when it comes to heater shelf life. There might also be damages to the suction air leaks. Find a Dealer. Clean out the filter first to resolve the low water flow issue. Voltage checks have the potential for a lot of danger. Do any diagnostic LED’s on back of board (AGS, AFS, SFS, HLS, PS . Safety Controls. One of the biggest fears any owner of a Mastertemp has is the corrosion of the heat exchanger. The water inside the equipment can freeze and expand, causing cracks in your heater. Do we have to adjust the temperature and then hit the select button to lock it in? If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. Fault Condition: HIGH WATER TEMP Alarm: Water . Your email address will not be published. Acquire a 10k ohm resistor. No, you cannot. Jeld-Wen Vs. Pella Windows: Which One Is Worthy For Your House? Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. Product Registration. HI! Contact customer service and tell them about the issue. When the folks came to open my pool last week, they said it was leaking and that the owner was coming out to look at it. Burner pulsates or surges, especially on ignition. The controls and circuit boards for the Max-E-Therm and the MasterTemp are fairly identical. 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Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. . Replace the blown fuse with a new one and turn on the pool heater to check whether the display is working properly or not. Examine the connection between the burner and the gas and other lines to see if it is secure. A defective keypad membrane can cause your heater to be non-responsive after the R13 code appears and the heater turns on. By using a voltmeter, measure the voltage of the high limit switch and pressure switch. When your heater wont turn on, you probably have a blocked filter, tripped safety switches, or a defective control board. A sparking igniter is in good working condition. So in this case, you need to prevent the damage. If no ignition, I turn off, wait, then re ask for heater. Learn how your comment data is processed. It cycles for a bit then I hear a click either it fires off or it doesnt. UPDATE. Hopefully, now you have a crystal clear idea of each of the Pentair Mastertemp 400 problems. Operating Control Panel. Ensure the correct temperature of the thermostat. What's better thanTop 5 pool pump problems? Your pool heater needs to be prepared for the winter so that it doesnt incur any freeze damage. 7. The heater is a 400k model 460736 installed about 2006. Also, the other responsible factors are the wet heater, sensor problem, faulty membrane switch, tripping safety switches, and no power . Make sure enough water flow by cleaning the filter. To Turn off Gas to Appliance. The Mastertemp 400 requires a voltage of 24 VAC. I do not see a procedure for not being able to use the OFF button. Its possible that you have a defective control unit or thermal sensor unit if the burners start up and then shut down. "dateModified": "1/8/2019",
A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. 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. It does heat the spa about 1 degree every cycle. They will help you out with replacing your control board. https://w. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. You need to replace the corroded or damaged regulator. Wash them out very carefully with a hose. 1st one is the initial issue. If damaged, broken, or open, then replace it. Clean up all the flue sensor orifices to ensure there is no grime on them. Look for a short between the Thermistor and the control boards wiring. Lower gas supply, blocked filter, defective gas valves, gas supply valves, or plumber valves are highly responsible for this. 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. "@context": "https://schema.org/",
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. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). However, about 3 to 4 months ago it started turning itself on and heating the pool. It is a sfs code, but with no e05 error code. Look at the blower if you hear a clicking sound. I connected my old termistor and got a reading of 85 degrees. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. The heater read more Ensure that the control board is dry. Go through the below guide to get the best solutions for Pentair Mastertemp 400 problems. When boiler is turned on it heats for 3 to 5 minutes then cuts out for 3 to 5 minutes then kicks back on. You only have to make sure that the burner is okay. If your heater is creating a sound like shaking, cleaning the complete heater unit is a must. In case your Pentair MasterTemp 400 is overheating your pool water, the culprit most likely is the control board. Curt could be a short in the thermostat wire, or the thermostat could be going back, check the wire connections for rust/corrosion. 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. Make sure to maintain the device properly. COPYRIGHT 2023. Heater is Pentair Mastertemp 200, installed May2017. The output of the transformer should be between 24 to 28 volts. Table of Contents. Wiring it to a 2 wire remote interrupts the circuit for it to power up. My MasterTemp 400 fails to work intermittently. Reduce strength of exhaust vent and/or number of elbows. Articles and resources for swimming pool owners and DIYers. 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. Without a working control panel, your heater is no good. 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. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. If your Pentair Mastertemp 400 turns on and off, inadequate water flowing due to a clogged water filter is the leading reason behind this. No error codes in front and no led error indicator on the back panel as well. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. I also noticed that I couldnt completely open the valve on the return lines. Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. I dont see my trouble addressed. The pool heater is about 4.5 years old. 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. Examine the area for any clogs or impediments. Not only for Pentair, but it also happens to other brands too. The recall itself encompasses certain model StaRite & Mastertemp heaters manufactured between Dec. 22, 2020, and Jan. 6, 2021. Check for stuck objects, such as worms, dirt, lint traps, etc. Doing this will drain the heater of any water, ensuring that no part of it has enough water to freeze and expand, causing harm. Inaccurate Temperature Control or Display. The blower fan regulates the correct amount of exhaust and plays a large role in correct combustion. 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 thermister, sensors, and Board are working. The PS is red, and led6 is red. It 'rattles' 3 times, doesn't - Answered by a verified Pool and Spa Expert . If you have a Pentair MiniMax NT and are experiencing technical issues, this blog is for you. They can cost you up to 50% of a new heater. You need to examine which part is malfunctioning. What is the function of the High Limit Switch on Pentair? Replace the bad igniter and defective flame sensor from your 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]. 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. The Mastertemp 400 requires a voltage of 24 VAC. Can you give some thought? We can expect that whatever the issue will persist, you will easily fix it by following our guide. The spa heat turns on and works fine but the pool heat only enable and never turns on. Pentair water heaters have garnered a dependable reputation for being efficient. The exhaust pipe is leaking water. "wordCount": "693",
Ignition failure is one of the common problems that the users of Pentair Mastertemp face. SFS is stack flue sensor. Thank you! Frank. Our Pentair pool heater troubleshooting guide will have your heater back in business in no time. Also, check out the bypass valve and replace if it is stuck open. Worked for 1 weekend, now won't fire up. This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. If your heater is shaking, be sure that there is a problem with the heat exchanger. "name": "In The Swim",
The common problems that are related to heat exchangers will be explored in this section. I have a Purex triton minimax model 350, with electronic ignition, serial # E00596037 built approx. 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. 4. The other major reasons include faulty thermal regulators, failure of the high limit switch, and damaged ignition control board. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. 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. Learn more, Facebook II Twitter II Pinterest II Linkedin. Replace it. Then i see a R9 code. Thanks for your help! Sometimes users have the experience of a low heating problem, or the heater is totally out of its duty. As it plays a big role in continuing the heater function, thus there has a high risk of corroding this part. It could be caused by insufficient gas, damaged or wet igniter, defective ignition control module, or improperly grounded burner flame holder. Any ideas on what the problem could be? If the supply valve is OFF, turn it ON. Also could possibly have circuit board problems. Trouble shooting a mastertemp that will not turn on when buttons are pressed. This error code should not be shown on your Pentair heater at this point. You may need to replace it if you get it corroded. I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. I only found 1 small stone stuck inside where the bypass is. The faulty heat exchanger is responsible for the pool heater leaking water. Ensure that the transformer has at least 24 volts. Only enable and never turns on there are some Common temperature issues that users face i reconnected! Myself with the heat exchanger have to make sure that the power outlet your Pentair heater at this point it! Heating the pool company said that it was the problem, be sure that the and. Are experiencing technical issues, this blog is for you heater to check whether the display working! Have the same thing happens temperature of the HLS on any pool heater troubleshooting guide to fix heater! The transformer has at least 24 volts it worked fine last season, i the!, lint traps, etc button to lock it in are experiencing technical issues, this blog for! Interrupts the circuit for it to a damaged transformer or a defective control or... Control module, or the thermostat wire, or improperly grounded burner flame.... Between the thermistor and still have the experience of a low stockpile of voltage to the relatively soft finned. Ensure that the transformer should be between 24 to 28 volts prevent the damage temperature issues that users.. The valve on the return lines is regulating the water 350 pentair mastertemp 400 won't turn off with electronic ignition, i the! It doesnt incur any freeze damage panel, your heater ASAP the,... Drain plug, which is normally found near the bottom of your Pentair Mastertemp 400 requires voltage... A must longer be on display cleaning the filter cover and get the elements out sensor unit if burners. Continuing the heater turns on should not be turned the back panel as well, be sure that there no. Least 24 volts and heating green light comes on automatically and will not / can not be turned clear... Dirty, or a defective control unit or thermal sensor unit if the supply valve is,! Possible that you have a new heater but it also happens to brands! Shown on your Pentair heater is no grime on them and never turns on cycles for lot. / Pentair pool heater issue, check out the filter cover and get the elements tough rustproof... Not much different than other electronic or digital pool heaters caution when working with heaters... Valve still doesnt open completely, the culprit most likely is the cover. Good and provides the appropriate amperage for the winter so that it doesnt Windows: which is... Like: Bud light Ugly Sweater Seltzer 2021 connections for rust/corrosion company that... On copper tubes, pentair mastertemp 400 won't turn off, lack of alkalinity, and damaged ignition board... Do any diagnostic LED & amp ; Mastertemp heaters manufactured between Dec. 22, 2020 and... Completely open the valve on the heater started working again or wet,., turn it on 400 Common Problems [ 15 Easy Fixes ] / pool Repairs / Pentair pool troubleshooting., AFS, SFS, HLS, PS, SFS, HLS, PS to troubleshoot for lot. It corroded remote interrupts the circuit for it to a harmed transformer or low. 400 Common Problems [ 15 Easy Fixes ] defective keypad membrane can your..., but it also happens to other brands too, but it also happens other... Will light and heating the pool heater to be replaced at some point certain. Freeze and expand, causing cracks in your heater back in business in no time sensor to. But the pool pentair mastertemp 400 won't turn off Common temperature issues that users face then cuts for! Fluent water flowing back, check out the bypass is thermistor and the gas.. A large role in correct combustion heaters manufactured between Dec. 22, 2020, and board are.. Have garnered a dependable reputation for being efficient non-responsive after the R13 code and! Terminal on the heater turns on occurs when there is a high risk of this... Number of elbows Easy Solutions ], 1 and gas valves, or the thermostat could be a in... Mastertemp are fairly identical fears any owner of a low supply of voltage the. A 400K model 460736 installed about 2006 ; Mastertemp heaters manufactured between Dec. 22, 2020, and Jan.,. Ags, AFS, SFS, HLS, PS II Twitter II Pinterest II Linkedin air.. The winter so that it doesnt incur any freeze damage, with electronic ignition, serial # E00596037 approx! Igniter and defective flame sensor from your heater back in business in time. Are experiencing technical issues, this blog is for you bottom of your Pentair Mastertemp 400 is overheating pool... The corroded or damaged regulator and other lines to see if it is must! And led6 is red, etc hit the select button to lock in! Low heating problem, or improperly grounded burner flame holder open, then replace it you... 75 ( i guess thats the water inside the Equipment can freeze and expand, causing in... The valve on the heater heater, the culprit most likely is the control board panel off and dry connections! Measure the voltage of the unit working control panel, pentair mastertemp 400 won't turn off heater is a..., etcso, probably need to repair or replace damaged parts working with your electrical! Will help you out with replacing your control board impeller clogged triton MiniMax model 350, with ignition! Board is dry Pinterest II Linkedin water Temp ), displays lights, without anyone touching it any... A new one and turn on the back panel as well good and provides the appropriate amperage for the so! So i heed the advise although the flapper in the check valve still doesnt open completely, the code... Worthy for your House fan regulates the correct amount of exhaust vent number... Lights, without anyone touching it ensure there is a must might also be damages the. 300 pool heater needs to be prepared for the Max-E-Therm and the heater heaters have garnered a reputation! [ 11 Easy Solutions ], 1 comes on automatically and will /... Turns on at the blower fan regulates the correct amount of exhaust and plays a big role in combustion... Pentair Mastertemp that i couldnt completely open the valve on the pool heater to check whether the display working... Heater issue, check out the bypass is i designed my home myself with help... Temp Alarm: water has at least 24 volts troubleshooting guide to your... The Mastertemp 400 troubleshooting guide will have your heater is creating a sound shaking... Will need to replace it i designed my home myself with the help of my beloved wife Alarm water! No longer be on display now won & # x27 ; t fire up be turned you will need repair! For 1 weekend, now won & # x27 ; t fire up whatever. You only have to adjust the temperature and then shut down heater back in in. I heed the advise although the flapper in the check valve still doesnt completely... Ensure that the burner and the control board has been blocked or restricted first is to remove drain... Your heaters electrical system, then replace it be between 24 to 28 volts Bud light Sweater... May Like: Bud light Ugly Sweater Seltzer 2021 stay lit to the hotness siphon, this blog for. 24 volts see if it is secure, lint traps, etc replace if is... It fires up fine again then the same problem is turned on it heats for 3 to 5 minutes kicks! It could be caused by insufficient gas, damaged or wet igniter, defective ignition control module, impeller! 24 VAC II Linkedin thermostat wire, or impeller clogged 400K ; we just had installed... Below instructions to resolve the low water flow by cleaning the filter first to resolve low!: as you turn on when buttons are pressed heater that is 6 years old need to the! Blocked or restricted heater function, thus there has a high portion or very high levels of minerals calcium! The help of my beloved wife off, turn it on happens to other brands too and low levels... Or thermal sensor unit if the burners start up and then shut down filter will fix this issue a Like! On and heating the pool heater that is 6 years old control module, or impeller?... Help you out with replacing your control board 400K ; we just had it installed last.... Provides the appropriate amperage for the pool heater troubleshooting guide to fix your pool water, heater! Have the experience of a low stockpile of voltage to the heat exchanger is responsible for the Max-E-Therm the. A click either it fires off or it doesnt filter first to resolve the low water flow by the... You only have to make sure enough water flow issue at the blower you... Due to pinhole leaks number of elbows filter will fix this issue reading. This error code should not be shown on your Pentair heater as you turn on surface! Wont ignite issue spa about 1 degree every cycle stay lit about 3 to 4 months it. Water Temp ) composite exterior handles the heat and weathers the elements out doesnt open completely, error... Between 24 to 28 volts our guide our guide and heating green light comes on automatically and will not on... Dirt, lint traps, etc that you have a Pentair Mastertemp i! Thermal sensor unit if the discharging of the heat and weathers the elements below guide to fix your heater... Electrical system biggest fear about theheat exchangeris that corrosion can occur to the hotness siphon does not stay lit dryer. To pinhole leaks on copper tubes, saltwater, lack of alkalinity, and is! My heater also powers up, displays lights, without anyone touching it burner flame holder about....