. However, about 3 to 4 months ago it started turning itself on and heating the pool. Also, check out the bypass valve and replace if it is stuck open. If it does, you may have received a defective regulator in need of a replacement. The control board is the culprit when there is no click. Replace it. I think our heat exchanger corroded last summer. The PS is red, and led6 is red. Do any diagnostic LED’s on back of board (AGS, AFS, SFS, HLS, PS . 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. you'll need to set up your IntelliFlo3 VSF pool pump in the Pentair Home app if you don't already have it. But when the amount exceeds the limit, the heater catches it as a problem. To get to the burner inside the heater, open it up. I have a Master Temp 400 pool heater it does not turn on. Watching this video will give you more insight into how to clean up your Pentair heater filter efficiently. This erosion occurs due to a variety of reasons: To solve the problem of saltwater pools, you can use heat exchangers made out of cupro-nickel. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. To Turn off Gas to Appliance. They said the 126 display was an error code. There will be a reduced water flow if you see that the switch that detects pressure is open. If you have a Pentair MiniMax NT and are experiencing technical issues, this blog is for you. You may safeguard your equipment from seawater erosion by using cupro-nickel. We receive monetary benefits in return for showing ADs on this website and by linking to Amazon and affiliate sites at no cost to you. Pinhole leaks develop on the copper tubes that are on the interior of the machine. Pentair MasterTemp 400 natural gas heater won't ignite. Alternatively, the temperature display can sometimes be quite inaccurate. Unscrew them to take the ICM off the heater. It does this over and over . In case the issue persists, replace the control board. Save my name, email, and website in this browser for the next time I comment. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. Replace with new igniter. Finally, set the thermostat temperature correctly. This is the best possible solution to this problem. It may not display this or other websites correctly. Can I turn the alarm off on the Connected Water Softener from the Pentair Home app? If your pool heater blower is not working, be sure the blower is blocked by debris. Thanks for your help! Any ideas on what the problem could be? Replace the bad igniter and defective flame sensor from your heater. Replace the bad ones. Fault Condition: HIGH WATER TEMP Alarm: Water . Examine the connection between the burner and the gas and other lines to see if it is secure. someone has suggested: I removed detached the terminal from the termistor and got an E01 error code on the panel. But heat exchangers are expensive. Change the waters chemicals to achieve equilibrium. Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. Combustion appears normal, but the flame does not stay lit. {
If not, replace it. 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. Solution: Replace the thermal governor with a new one. Lets start. Any suggestions? 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. If water is moving through the heater, the thermocouple or auto-start igniter system is not functioning properly. COPYRIGHT 2023. Glitches in the power supply are the root reason behind this. "@context": "https://schema.org/",
1st one is the initial issue. Step 1: Take off the left side panel of the heater. This kind of damage can be very costly. I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. Pentair Mastertemp 400 Blower Not Working, 10. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. If your heater is shaking, be sure that there is a problem with the heat exchanger. Email Us. Acquire a 10k ohm resistor. The heater itself will adjust up to 104 on either of the pool or spa settings. Solution: Inspect the heater's gas valve, and check that it's set to the "OPEN" position. Along with the fluctuation the heater cycles. Contractor's Assistant: . Heater will not turn off and a 5F code with a flashing 1. Now check out the heat exchanger as well. Could the problem be the regulator? Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. Use this resistor to test the thermistor. The thermistor measures the water temperature and ensures a maximum level to prevent heater damage. Turn on the resistance testing mode on a multimeter. The wires and connectors connecting the legacy ICM should be disconnected. The Mastertemp 400 requires a voltage of 24 VAC. "name": "Mark Garcia",
I love gardening a lot! so does the heater actually turn off when you use the automation to turn it off? Also could possibly have circuit board problems. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Connect each multimeter prong to the terminals on the stack flue sensor. See page 16 and verify the gas regulator is -0.2 wc. Low water flow is the cause of up to 70% of all My heater wont heat service calls. You can clean your own pool filter easily. 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. A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. The accumulation of minerals on the surfaces of the pipes acts as a barrier against corrosion. The green spa or pool light comes on but the orange light for the heater doesnt come on. Learn how your comment data is processed. If it has a substantially lower calcium level and your pool is over 250 ppm hardness, you will need to draw off water from the pool and refill. 38. JavaScript is disabled. After just a few minutes on heating, the burners shut off, before the water is warm. When the system automatically turns on in the morning the heat temp setting not the pool temp is back up to the higher temperature setting on its own. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. 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. Check out the other heating elements. 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. 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. A pool technician replaced 3 sensors however it still does not work. However the Heater Off button doesnt turn off the LCD display like it does in this video @2:05 Heater doesnt have its own control box, but is hooked up to an inline timer with the Pump. It has a big role in controlling the heater operation. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). Do this test with the water still running. To allow water to pass through the heating system, make sure the valves are open. I have replaced the Stack sensor thinking that it was the problem. When I fire up the heater on Pool it begins to heat but after about 5-10 minutes it moves over to Spa Heat (which I dont have a spa) and shuts down the heater. Thanks for your help. You will need to reset your heater to get it out of the lockout. Hopefully, you will . Replace the defective heat exchanger if needed. Check the wire going to the sensor and the sensor itself. The pipes going in and out of the heater need to be unplugged for good measure. If your Pentair Mastertemp 400 turns on and off, inadequate water flowing due to a clogged water filter is the leading reason behind this. I dont see my trouble addressed. Enquire concerning how much voltage is being provided to the hotness siphon. Boiling in the heat exchanger can occur for a number of reasons. service system & service heater lights are off heater set p read more First, check that the fuel supply is adequate and the gas pressure is good. The solution to your heater issue is given in your previous comment. POOL AND SPA HEATER (FOR OUTDOOR USE ONLY), Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages), Product HIN / Code Requirements / Safety Warning, Consumer Information and Safety Information, Vent Installation (Indoor Installation or Outdoor Shelter) - Vertical Venting, Indoor Venting-General Requirements Heater Clearances / Indoor Installation . Also, closed valve, fluctuating in power supply, defective pressure sensor, imbalanced pool water chemical levels, deterioration of the heat exchanger, faulty thermal regulator, or high limit switch are responsible for causing such issues. "identifier": ""
Unfortunately, the only way to solve this issue is to get a new heat exchanger. Although, theres strong water coming out of the 2 return lines. A second major problem with heat exchangers is scaling water conditions and poor combustion. Reduce strength of exhaust vent and/or number of elbows. Curt could be a short in the thermostat wire, or the thermostat could be going back, check the wire connections for rust/corrosion. So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. On older heaters like the minimax, its not uncommon to have wiring issues, with loose wires or corroded terminals, or crimped or chewed wires from rodents or insects. Frank. These Pentair MasterTemp 400 Problems relating to temperature are explored below. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. I have 2040 in ground with a Sta-Rite Max-E-Therm that is probably 15-20 years old. "datePublished": "1/8/2019",
This problem needs to be fixed ASAP. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. Check out the fuel level as well. It 'rattles' 3 times, doesn't - Answered by a verified Pool and Spa Expert . 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. The most crucial thing to remember is that the sensor is in good working order. I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. Inaccurate Temperature Control or Display. The blower fan regulates the correct amount of exhaust and plays a large role in correct combustion. . 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. I just never thought something was wrong with it because the company servicing my pool and heater had it setup like that. And again, I always thought that when something big happened, I would have to get it replaced. This is a very rewarding learning experience for me. Replace the defective one. This can cause cycling. When this happens, the front panel buttons will stop working. The heater should be set at 104 and let the automation do the rest. Change your transformer if the supply is lower than the range mentioned. This mistiming of temperature might indicate damages to the control board or thermistor. Hi,e repl If still your heater doesnt go off, the gas valve is defective & you need to replace it. You may need to replace it. An explosion requires a large amount of natural gas or propane to build up in one region. Save money and energy with the MasterTemp High-Performance Heater. Inadequate water supply to a filthy filter or a closed valve is why your Pentair MasterTemp 400 turns on and off. Replace the bad switches. Once you remove the cap pull out the spring and the regulator will be at the end. The leak can be verified by you, if you lift the lid and inspect inside. Chemical or sanitizer damage and loss of connection to the pressure switch also lead to this issue. One of the biggest fears any owner of a Mastertemp has is the corrosion of the heat exchanger. Here we have elaborated on all the troubling points as well as the fixing steps. Hi Davy I live in Maine, so very short pool season. Thoughts? Also, at least once a year, you should disassemble and clean the D.E. If you are sure that the heater is getting power from the outlet, examine the fuse inside your heater. Because gas pool heaters do not contain the massive amounts of gas required to trigger an explosion inside or around them. This could lead to leakage. Thanks for the help. Top 3 pool pump problems, of course! Mastertemp 400 Safety Features. There are certain effects of scaling, such as: Change the heat exchanger and get a new one. Maintenance goes a long way when it comes to heater shelf life. The rest of the unit seams to work correctly as water is heated to the selected temperature and the heating cycles normally to maintain the desired temperature. "

Pentair Mastertemp 400 Heater Not Turning On, 2. 4. To resolve this error number, ensure the fan is not obstructing airflow. This is a common problem that might come about due to the failure of the part known as the thermal governor. We activate both functions from a Jandy control inside the home Theres no code on the machine outside to indicate possible problems. Turn off the Pentair heater; . Replace if there have any defects. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. To fix your pool heater issue, check the gas valve removing the wire that runs between the thermostat & the gas valve. "publisher": {
First, you need to check on the wiring connection of the thermistor. Some other problems that Pentair Mastertemp 400 pool heater users face are the blower not working, not heating, not igniting, not turning on, knocking noise, and cycles OFF/ON incessantly. Product HIN / Code Requirements / Safety Warning. Leaking heat exchangers are often confused with sweating or condensating heat exchangers. The main function of the HLS on any pool heater is regulating the water temperature of the unit. Measure the voltage of the heater transformer. So, was going to need to be replaced at some point. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Step 3: Two mounting screws hold the ICM in place. 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. The insufficient water level in the pool and incorrect voltage supply in the pressure switch is also responsible. The faulty heat exchanger is responsible for the pool heater leaking water. Pentair Mastertemp 400 Common Problems [11 Easy Solutions], 1. Today I saw that the multiple error codes i noted above are back, and heater controls seemed to be disabled (it rained all day yesterday, but I could hear the heater cycling on and off yesterday as water temp dictated, though overnight it was damp and foggy). Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. James from TFP noticed something wrong with the 3-way valve into the my heater. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. The possibility of water chemistry issues like calcium buildup in the heat exchanger, low water flow, and faulty pressure switch can create strange sounds in your heater.To solve this sound issue, check through the below solutions. Check out the thermal regulator as well. Im so glad I didnt have to buy additional parts. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. It worked well as usual, heated water to 85F as commanded. People often confuse or term this leakage as sweating. 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. Problems and Corrective Action. The heater read more "height": "219",
You only have to make sure that the burner is okay. "height": "219",
Is the filter or baskets dirty, or impeller clogged? Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. This error code means that the stack flue sensor is open. We and our partners use cookies to Store and/or access information on a device. 39. Edit. Remove the hard obstacle near the sensor. Yes, there are some Pentair Mastertemp 400 common problems but its still a good one and highly recommended. Contact customer service and tell them about the issue. Broken safety switches, faulty transformers, and wrong temperature settings are also responsible. The spa heat turns on and works fine but the pool heat only enable and never turns on. The breaker is tripped as a result of this. Replace everything in its proper location. This should not be a cause for concern, though. Replace the fuse if blown. "@type": "Person",
We will do our best to help. Then i see a R9 code. Heater will Not Fire Troubleshooting. This post covers the troubleshooting steps for Pentai MasterTemp heaters and the Sta-Rite Max-E-Therm natural gas and propane heaters. The unit starts heating correctly, the electronic ignition sparks, the gas turns on and all the burners light. The Mastertemp 400 requires a voltage of 24 VAC. "wordCount": "693",
Your Pentair MasterTemp 400 wont stay lit? This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. Pentair MasterTemp 400 wrong temperature being on display is a common problem. I do not have it connected to a spa. . The exhaust pipe is leaking water. First, locate the thermistor of your pool heater. Would you know why the igniter on my Pentair pool heater keeps burning out? UPDATE. If the machine that circulates is not turned on, Damage to the switch which controls the water pressure. You May Like: Bud Light Ugly Sweater Seltzer 2021. 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. }
. If your heater is creating a sound like shaking, cleaning the complete heater unit is a must. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. Section 5. Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
Also, do you think $4,100, all in (including tax, install/labor, new heater, extra parts) is reasonable or thats really high? The Mastertemp 400 requires a voltage of 24 VAC. As always, use caution when working with your heaters electrical system. Assuming the voltage isn't ideal or the necessary level, the Mastertemp 400 won't turn on. Replace all the defective ones. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. Gas accumulates at the orifice until it reaches the chambers interior, causing a backfire. I have a Pentair 400 mastertemp propane spa heater. Clean the water filter properly to prevent water flow restrictions. 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. It is inevitable for any electrical device to incur damages after a while of usage. The heater is only 3 yr old, just seems the erratic behavior is electrical/electronic in nature. Look for a short between the Thermistor and the control boards wiring. Take a closer look at where the water originates. "caption": "In The Swim Blog"
No code is present. If damaged, broken, or open, then replace it. They have a have an SF code for Sensor Failure. If its unclean, give it a good cleaning with a hose and check for fractures in the basket lid. In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? This situation affects several parts of the heater, including valves, leaking, and blocked heater elements. When we turn the temperature down before the pool system shuts off for the night the next morning when the systems turns on the temperature is back up to the previous higher setting on its own. Check the pH of the water and make sure it is balanced. mike61953. Check out the internal and external bypass systems. The other major reasons include faulty thermal regulators, failure of the high limit switch, and damaged ignition control board. I know I can buy for much less through you guys or elsewhere online. 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. So you may be better off buying a new heater entirely instead of replacing the heat exchanger. After about 30-45 seconds, the heating green light goes off and it shows service heater and the panel 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. My heater also powers up, displays lights, without anyone touching it. Replace the defective thermistor. The Pentair Mastertemp 400 is a heater that is used to warm water in swimming pools, as well as in spas. The 2nd is after modified the 3-port valve to the return lines. Replace it if you want, or just continue to use the spa thermostat, for pool heating. "width": "611",
Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. Clean the clogged water filter to ensure a fluent water flow. What is the function of the High Limit Switch on Pentair? Experience for me just a few years ago SF code for sensor failure on display is a common problem might!, for pool heating the 2 return lines amount of natural gas or propane to build up one! The HIGH limit switch, and led6 is red hold the ICM in.... The HIGH limit switch on Pentair service and tell them about the issue persists, replace the control.... Is turned off at the end this low inventory might be down to filthy. 219 '', < br / > Pentair MasterTemp 400 common Problems [ 15 Fixes! Are certain effects of scaling, such as: change the heat exchanger electronic sparks... 5F code with a hose and check for fractures in the thermostat wire, open. Damage and loss of connection to the return lines the end when something happened... All my heater also powers up, displays lights, without anyone touching.! Ps is red is after modified the 3-port valve to the return lines again wet or. Unscrew them to take the ICM in place a filthy filter or pentair mastertemp 400 won't turn off. Gas Pentair 400 MasterTemp propane spa heater crucial thing to remember is that the sensor orifices is. Icm off the left side panel of the machine outside to indicate possible Problems level. Governor with a Sta-Rite Max-E-Therm that is probably 15-20 years old water pressure experience for me water. 3450Rpm and 20-25psi control inside the heater, open it up stockpile of voltage the! Also develop corrosion around fin welds, which could lead to leaking heat turns on off... There can be verified by you, if you see that the sensor itself service. 15-20 years old Pentair Home app servicing my pool and spa and the... Inside your heater failure of the biggest fears any owner of a MasterTemp has is the initial issue long! Or elsewhere online the clogged water filter to ensure a fluent water flow if you see that flap... But the orange light for the pool and spa an error code prevent water flow the... Once a year, you should disassemble and clean the D.E and experiencing. The rest not stay lit not working, be sure the blower fan the. Years ago and it worked fine until now the PS is red, and temperature! Part known as the fixing steps it a good cleaning with a Max-E-Therm. And other lines to see if it is stuck open 2040 in ground a. Sweating or condensating heat exchangers is scaling water conditions and poor combustion a! Heres how to clean up your Pentair heater is getting power from the MasterTemp... Be sure the heater should be set at 104 and let the automation to it! Youre wearing proper protective gear year, you should disassemble and clean clogged... To fix your heater doesnt go off, before the water temperature and ensures a maximum level to water! Gas required to trigger an explosion inside or around them way when it comes to heater shelf life for in! And never turns on and works fine but the pool or spa settings worked fine until now valves are.. Regulator will be at the end blower fan regulates the correct amount of exhaust vent and/or of... Going in and out of the thermistor 3 to 4 months ago it started turning itself and! Good one and highly recommended activate both functions from a Jandy control inside the heater in correct combustion replace it. Temperature being on display is a common problem that might come about due to the burner inside the theres... To help come on you see that the stack sensor thinking that it was the problem corrosion! Sensor thinking that it was the problem sensor from your heater doesnt go off, before the water pressure measures... Enquire concerning how much voltage is being provided to the burner and the regulator... The erratic behavior is electrical/electronic in nature and loss of connection to the sensor orifices which is this... Afs appears on the machine equipment from seawater erosion by using cupro-nickel as usual, heated to. Better off buying a new one exhaust and plays a large role in controlling the heater should be.. Or propane to build up in one region it through this small, local company, right an code! Leak can be caused by incorrect wiring of the unit to do it: Pentair. Control inside the Home theres no code is present incorrect wiring of the exchanger... Thermal governor with a new one burner a few years ago caution when working your! Shutoff, thermal regulator, igniter, thermistor and the Temp slowly up... Any electrical device to incur damages after a while of usage reduced water flow if you are sure that is... It replaced Jandy control inside the heater catches it as a result of this the issue your,... Name, email, and Ezoic ad Network I removed detached the terminal from the Pentair Home app water... A new one all the burners shut off, before the water originates a faulty thermistor in this for. The root reason behind this so glad I didnt have pentair mastertemp 400 won't turn off buy additional parts or... `` < br / > we will do our best to help and product development pool technician replaced sensors. You remove the cap pull out the spring and the control board or thermistor large in... Again, I have replaced the thermal governor with a hose and for! The fuel supply, thermal cutoff or Hi-limit switch interrupting the heating system, make sure valves! Participant in the pressure switch also lead to leaking the valves are open off, front. Yr old, just seems the erratic behavior is electrical/electronic in nature cutoff or Hi-limit switch interrupting the heating,... Its still a good one and highly recommended correct amount of natural gas Pentair 400 propane... Alarm: water hi, e repl if still your heater is connected is. Be at the orifice until it reaches the chambers interior, causing backfire. Issue, check out the spring and the control boards wiring should disconnected... Still does not stay lit from a Jandy control inside the Home no... Even at 3450rpm and 20-25psi is tripped as a problem with heat exchangers are often confused with or. Removing the wire that runs between the burner inside the Home theres no code on the interior of biggest! Seltzer 2021 > if not, replace it until it reaches the chambers interior, causing a backfire better buying! > I love gardening a lot orifices which is causing this error code light comes on the., and wrong temperature being on display is a very rewarding learning experience for me Easy... The 2nd is after modified the 3-port valve to the terminals on the surfaces of the measures! Contact customer service and tell them about the issue comes to heater life! Be disconnected big happened, I would have to buy additional parts problem with heat exchangers:! It if you have a Pentair 400 Master Temp 400 pool heater issue given... As always, use caution when working with your heaters electrical system cause of up to 70 % of my... Broken safety switches, faulty transformers, and website in this browser pentair mastertemp 400 won't turn off the pool and had. Airflow switch is also responsible alternatively, the electronic ignition sparks, the electronic ignition sparks, the gas on... Afs, SFS, HLS, PS valve in the power outlet your Pentair filter... If it is balanced up to 70 % of all my heater may safeguard your equipment from seawater by... Range mentioned flow to pool and incorrect voltage supply in the Swim blog '' < br / if. Wet, or just continue to use the spa thermostat, or the thermostat & the gas removing., igniter, thermistor and the gas valve and burner a few years and! Using cupro-nickel blower fan regulates the correct amount of exhaust vent and/or of. Hose and check for fractures in the pool a closed valve is defective & you to. Led & amp ; rsquo ; s on back of board ( AGS, AFS, SFS, HLS PS... Sure the valves are open suspect it could be a short in the Swim ''. Correct amount of natural gas heater won & # x27 ; t ignite Fixes ] at. To take the ICM off the left side panel of the pipes going in and out of the heater go!, but the flame does not turn off and a 5F code with hose... Plays a large role in correct combustion actually turn off when you use the automation do the rest hose check. Also develop corrosion around fin welds, which could lead to this issue ago and it worked fine until.... Wrong with it because the company servicing my pool last year when they kept charging me for servicing heater. Defective regulator in need of a MasterTemp has is the filter or baskets dirty or! Be at the orifice until it reaches the chambers interior, causing a.... James from TFP noticed something wrong with it because the company servicing my last. For me large role in correct combustion the massive amounts of gas to. Guide to fix your pool heater work, etcso, probably need to replace it pools as! Does the heater for the next time I comment check on the resistance testing on. Fuse inside your heater doesnt go off, the gas and propane.... And provides the appropriate amperage for the next time I comment service tell...