Diagnostic Code Description AC Blower Vacuum Switch closed Increase the water flow by adjusting the bypass. White Goods . In such cases, the heater goes into lockout mode and the HF error code appears in the display interface. Turn power OFF and disconnect Ignition Wire and Gas Valve wires from board. Ive replaced the pressure switch and found AGS switches are working fine. Ascertain that the Display Interface Plug is firmly connected to the Control Module. If the HF code is still present, inspect and check out the continuity of the gas valve for 24VAC. We and our partners use cookies to Store and/or access information on a device. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Replace if needed. Pool tech said element tests ok but triac is bad again. In such cases, first, you have to replace the corroded copper tubes with new ones. Then, clean all the wires and reconnect them back. Otherwise, the temperature sensor may be faulty. The control will shut down and attempt to re-light if the blower vacuum switch opens suddenly during operation. Next, check the igniter and ensure it is firmly secured to the motherboards wires. If this happens, your safety circuit components, membrane pad, or control board may be damaged. That includes: Instead of worrying, go on our suggested solutions to cure the error effectively: First up, make sure that the thermostat is set below 104 degrees. Now, measure the continuity between the switchs terminals. Next, check the ICB for 24 VAC across the R and C terminal to test its continuity. In case your pool heater pilot wont light, be sure the burners or orifices are blocked which creates obstructions in the fluent gas flow to the burner. Save my name, email, and website in this browser for the next time I comment. Medallion Energy 3055 Tech Park Way Deland, FL 32724 407-786-0000. I know there is power and the heater still works and I can see the display light come on but no LCD readout of any kind. Also, it should go through the correct continuity of 24V AC. Clean the pool filter. 2. Should an over temperature situation arise regularly, you should check the following: 1. I love the saying, hindsight is 20/20, because its so true. Troubleshooting a Raypak pool heater failure is seamless when you know what youre looking at and how to solve it. Your problem will be solved.But if the error code is 56, it would be wise to contact the Hayward customer support center to solve this issue. Reset the heater by disconnecting the heater and reconnecting it again to power. Thats quite easy. So you can use one to start swimming sooner or extend it. As previously said, the Pentair heater error code R14 code isnt a cause for concern. Just restart your heater by disconnecting and reconnecting the power connection goes to the unit. Getting it hard to fix the error? To fix the error codes E01 and E126 with your Pentair pool heater, very first, inspect whether the thermistor is working. Pentair pool heater error code E05 indicates that the stack flue sensor is open, as the exhaust temperature was determined to be above 176F. First up, ensure that your thermostat is in good working order. Heres what you need to do to get rid of the Hayward pool heater error code AC. Then, measure the resistance for 120VAC across pins 1 and 2. This error occurs when your blower vacuum switch is found open when it is actually expected to be closed. I have a new Rheem-Raypak gas pool-spa heater. Next, you should investigate the wiring systems to ensure all wires are correctly connected to transmit power. The good news is, most pool heaters like Hayward and Raypak have digital readouts that display error codes. Then hold the mode button and the Down Arrow at the same time for three or more seconds. But if the water temperature is cool enough but the error message is still there, it means that there is something wrong with the high-limit switch. So, before going through the error codes troubleshooting procedure, it would be wise to check out the control board and its all connections. The dirty pool filter is the root culprit for this error which lowers the water flow and the heater shows an LO error code. Check to see if pilot is staying lit after CFH is satisfied. His goal is to help everyday people DIY their maintenance to save money by teaching how to properly take care of your equipment, safely and correctly balance chemicals, and extend the life of your water oasis. Below is a chart we created to help pool owners identify the meaning of Raypaks fault code. Pentair pool heater troubleshooting guide:https://blog.intheswim.com/pentair-pool-heater-troubleshooting-guide/Pentair High limit Switch:https://www.amazon.c. When the display board received the closed circuit from the stuck button, it shows the Sb code as a diagnostic error. Filters . Anyone familiar with my need for repair? E05 Error Code 9. Pentair Heater Error Codes [Reasons + Solutions] 1. The SF error code occurs when theres a temperature sensor input failure. The error is related to the blown-out FC4 fuse. Step 3: If yes, disconnect the p4 plug from the connection and take the voltage reading of pins 4 and 6. In this section, we will look at what each error code means and what are the simple solutions for these errors. Hello, Do all Hayward pool heat pumps have ability to display error codes and if so, do codes appear on front display screen? And remember, you must ensure that the water flow is not obstructed. First off, inspect the wiring on the igniter and ensure all are intact. If so, then I would say there is an issue with your pilot, either it is dirty or has failed. When they tried to fire up the heater the error No Pilot Detected came up. IO error code on the Hayward pool heater indicates that the igniter circuit of the unit is open. Youll also want to check terminals for breakage or corrosion. For over 15 years, Sean Moore has been sharing his love and enthusiasm for swimming pools and hot tubs with everyone he knows. It should give a reading of 110-125 VAC. 1. These codes arent an indication of an error but users get confused as to what they mean. They did not know why as they say gas if at the unit. Your heaters front panel will stop working when this error occurs. The heater has performed too many attempts to ignite the main burner and will take a short break. When the temperature of the water going through the heat exchanger for the second time exceeds 140F, the Pentair pool heater error code AGS occurs. Check water levels at skimmer face. Raypac Rudd model P-D406A-EP-C, installed new in May 2019, so just over a year old, has worked well but now, out of the blue, no display what so ever on the display screen. You must check that the rate of water flow is within the range specified and that the water temperature does not exceed 140F to correct this error. You, therefore, want to replace the board if theres no spark at the module after turning the power on. Make sure the sensor is connected to the rear of the control module. Filter or pump baskets are dirty. This is the number one issue for the heat pump not working. Possible downdraft of burner flame. Call your local gas suppliers to ensure proper gas pressure. The temperature sensor on your Pentair pool heater is open, as indicated by both the Pentair pool heater error codes E01 and E126. Then, look at the sight glass to check the flames presence. I suspect the control box area is overheating for some reason and causing the control board to overheat. Just leave a comment and we will get back to you ASAP. The cooling effectiveness of either a heat pump or an air conditioner can be improved by shading the exterior unit. (see pic on right) The word SERVICE will flash on and off if the PC board detects a known issue. 1 Hayward Pool Water Heater Troubleshooting Error Codes When people should go to the books stores, search establishment by shop, shelf by shelf, it is really problematic. The errors are likely caused by too high water temperature in the tube bundle. The display is a replaceable part of the PC board and can be replaced by your installer. ERR AGS Error Code 6. Plus, inadequate water flow, dirty pool filters, or closed valves are also responsible for this issue. We do not have the manuals or the expertise to be able to guide you through troubleshooting that model. However, the best solution is to replace the defective temperature limiter switch. Step 3: Loosen the thermistor with a 7/8 deep socket and remove it. A common concern is condensation. Inspect The Water Temperature Sensor, 3 Most Common Hayward Pool Heater Troubleshooting, The Five Biggest Sports Clubs In The World, instructions on how to solve Hayward pool heater code CE, on how to fix Hayward Pool Heater 5F or SF Code, comprehensive guide on how to deal with Hayward Heater BO Code, simple solution guide on the Hayward pool heater LO code, Hayward Pool heater will show an IF error code, solution guide on the Hayward pool heater H5 code, Rheem Tankless Water Heater Maintenance [Why+ How To Do], Rheem Tankless Water Heater Code 61 [Why+ How To Fix], Rheem Tankless Water Heater Code 14 [Why+ How To Fix], Rheem Tankless Water Heater Code 99 [Why+ How To Fix], Rheem Tankless Water Heater Code 76 [Why+ How To Fix], Bad board or secondary high voltage fault, Communication error between Display Interface Assembly and Control Module, Temperature sensor [thermistor] input failure, Maximum return water temperature exceeded and/or rapid water temperature rise, Flame present with gas valve not energized, Vent pressure switch, water pressure switch, or temperature limit switch fault. Replace the limit switch if it is faulty. If the connection is defective, repair or fix the issues with the gas valve. The life expectancy of a pool heater mainly depends on the type of pool heater and how well you are maintaining it. Yes, it is necessary. 1. Pool Research: Advice, Reviews & Data on Swimming Pools I just purchased the Raypak Digital Natural Gas Pool Heater 200k BTU Electronic Ignition heater, got everything hooked up, heater fired up and started working then the screen flicked off and on quickly which obviously stoped the heater, this happened at least 5 times in a row before I shut it off? Any thoughts on what the issue is? The consent submitted will only be used for data processing originating from this website. We have figured out some other major reasons for this error. Error Code AO 3. It would be difficult to discover an occasion where one of them exploded while in operation. But in general, a pool heater lasts for 10 to 25 years or more. The Pentair heater error codes displayed in your heater display tell you that you need to address specific issues with your heater. Is the pilot lighting? Millions of natural gas and propane swimming pool heaters are in use in the United States and around the world. Appliance Helpers 3.66K subscribers 2.7K views 1 year ago Is there a problem with your. Medallion Energy 3055 Tech Park Way Deland, FL 32724 407-786-0000. The AO code is the exact opposite of the Hayward pool heater AC code. Unless youre like my mom whokeeps all her paperwork in afiling cabinet, the manual was probably tossed a week after your product was working properly. Flame ignition is crucial for the heater to conduct the heating process. ERR SFS Error Code 7. Carefully also check for exposed wiring on your Hayward electric pool heater. Plus, you may need to replace the sensor if it is faulty. You have now fixed and cleared off your Hayward Pool Heater error codes without any hustle. Is it wired into the Firemans Switch Loop on the safety circuit connector? If the pump is a dual or variable speed, try setting the pump to a higher RPM. Any known conditions that cause this? The EEP error code occurs when theres a memory failure on the main processor. 11-12 . Also, the water pump should run perfectly. Pumps . New Hayward heater(propane)code flashing 111.heater will not go on.Code not in book. Step 3: Disconnect the blower connector from the Control Module. So always check the main power source first to ensure everything is running smoothly or properly plug the heater cable into the power socket. Do this by measuring the voltage across the gas valve during ignition. The buttons on your heaters front panel buttons will be disabled during this malfunction. To get rid of this error message, youll need to make sure theres enough water flowing. If the issue code remains after taking all of these steps, the stack flow sensor may need to be replaced. 1. When the control detects that the igniter circuit is open while the blower is running, it will cut off the blower and enter lockout mode. But you dont have to worry. Verify whether the water temperature sensor is well-working order or not. Changed the water sensor but the code is this there. There are a few major reasons that should be noted for this issue: First off, check for any damage or breakages in the vacuum switch tubing or wiring. If sensor has red reset button, press button & determine cause. You have to make sure that the fuse is not open. Thermal fuse tripped inside heater due to excessive heat or flame roll-out detected. Then inspect the pump for any blockages and clean it. High winds down drafting could also be one of the reasons behind the fault. Are you running a variable or dual speed pump on the lower end of the RPM scale? Leaking Heat Pump. The ILO error occurs when theres an ignition lockout. Pump should shutoff a minimum of 5 minutes after heating cycle ends. Most Raypak pool heater models have a digital readout that displays the error codes. Inspect Parts of the Heater for Malfunctions, Rust, and Leaks, Frequently Asked Questions About Pool Heater Errors. Clean pilot. You will need a thermometer. When the water flow goes down from the minimum level, the water output temperature gets too high. Give this guide and video a read for different methods to fix low pressure, How To Identify and Correct Low Water Pressure. How is the remote wired into the PC Board of the heater? PF error code indicates an error in electrical supply wiring. If there is no flame, its a bet that the ICB is faulty and it needs replacement. Then the heater shuts down and goes into lockout. How many times did you wish you kept something after you have convincedyourself that you didnt need it and threw it away? There are many ways to diagnose the fault on an automatic or manual temp limiter switch. All of these occurrences are out of the ordinary. Excerpt from the Raypak RP2100 Series manual troubleshooting section on temp sensor issues: I have a RAYPAK Model P-R206A -EP-C PROPANE Spa Heater. Call Us Nationwide: 1-800-741-9956. Am reluctant to order if incorrect & not returnable. Then, all you have to do is check out the manual and apply the recommended solutions. This error mainly happens in case any of the buttons on the keypad get stuck. Same as replacing the bad display interface assembly as well. Even after doing all the above, read our article on the Hayward pool heater IF code. Make sure that the main gas shutoff next to the heater is open and the knob on the gas valve within the unit is turned on. The AO code is basically the opposite of AC code. Hard to read. Usually, depending upon the manufacturer, the manufacturer will include a manual detailing what may have triggered the error message and possible solutions to fix the issue. The Hayward pool heater HF error code will appear when there is a flame present but the gas valve is not energized. Then, turn it back on after a few seconds and check if the error is still present. Cleaners . Download our free Pool Maintenance Starter Kit and learn how to manage your pool affordably and efficiently. Error codes are both curses and blessings. To confirm this, diagnose the problem by pressing the mode button to place the heater in standby mode. I have switched High limit 1 and 2 Sensors with no success Inspect wires for kinks or rodent damages. No one likes to get an error code on any piece of technology, especially on a Raypak heater. Measuring switch continuity can also help. The problem can be a malfunctioning blower fan or blockage of the fan air. To keep these units running at top efficiency, the digital controls will display a code when something needs service. Thats why you want to help avoid this by using optimal temperature settings. Replace the ICB if the voltage is present. Replaced Unitherm Governor with no success For models before 2010, the correct resistance is 8-9 ohms. The pump should also be running smoothly. If so, you may have the scheduled speed set to too low of an RPM; that alone, or a combination of a dirty filter, could bring up this code. If this is a brand-new install and it has been flashing this alert from the start, then Id have the installer come back out and check it. Keep reading our Hayward pool heater error codes troubleshooting guide to get rid of error codes. The bD error code occurs when your heater has a bad board or there is a secondary high-voltage fault. First, disconnect the power supply to the unit to help clear the lockout. 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. Check the connections and the wiring of the gas valve. The best way to solve pool heater errors is to know where the problem is coming from. Pool Antifreeze: Everything You Need to Know, Bubbles in Pool? The thermal regulator must be in good functioning order and in the correct position. If that is not, there might be an insufficient voltage supply in the pins connection of the fuse board. If issues persist, contact your service installer. Its advisable to replace the gas valve, especially when the pilot valve in the gas valve is defective and hanging open. Check for high winds when diagnosing, then install a high wind stack if high winds are present. Alternatively, you can check the gas volume supply and gas line size. Why Jandy Pool Heater Wont Ignite [9 Easy Fixes], 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], Bad board or secondary high voltage fault, Theres an error in communication between the Display Interface Assembly and Control Module, Flame present with gas valve not energized, Maximum return water temperature exceeded/or rapid water temperature rise, Vent pressure switch, water pressure switch, or temperature limit switch fault, Voltage polarity reversed or low voltage detected, Temperature sensor [thermistor] input failure. Manage Settings Handling a GVO error code is similar to GVC error code. Step 1: Check for any damaged vacuum switch tubing and, if necessary, replace it. The models with digital thermostats are programmed to display a variety of status and diagnostic messages, depending on the operating conditions. Here you go: Error Code AO on your Hayward display screen is the clear error indication of the openblower vacuum switch when it is expected to be closed. If no power at the valve, confirm the pilot valve voltage from the PC board with pilot sparking. Replaced both and it worked for a few days but now has tripped the breaker again and cannot reset. Lastly, replacing it with a new one is the perfect solution if the limit switch is defective. If before starting up the blower the vacuum switch is detected as closed, the unit will not turn on the blower. When the heater is controlled by a remote thermostat, this is the standard display. It might be because of faulty wiring or a loose connection to the ICB. It stands for stuck button and requires the replacement of the keypad, which is an easy repair using an aftermarket Swimables FDXLBKP1930 Keypad and Bezel Assembly for $34.95 available from Amazon. Sooted or damaged heat exchangers can also cause the fault. Any help is incredibly appreciated as we can not get a return call from the installer or Raypak. Disconnect the blower from the ICB and check the resistance. When your heater is turned on, youll see this code on the display. Turn the power back on. If continuity is present, replace the bad switch. Winding resistance across lead should be between 8 and 9 ohms from red to white. It means that the blower vacuum switch is open when it is supposed to be closed. Certain components of your pool heater may get clogged. Getting CFH then SPK but no flame picture is showing. 3. If no gas coming from the energized pilot valve, replace the valve. Once you have managed to open the switch, the error will clear and your unit will administer an automatic reset. Well, to know about this error code elaborately, you can go through our simple solution guide on the Hayward pool heater LO code. Or maybe its just me. The problem lies where the power dies. Here you will also get reading for 110-125 VAC. The code is actually Sb, which looks like it could be 56. Here the blower continues to run until the error is fixed. Usually just E3 which indicates no water flow. I looked up the manual for this heater, and below is whats listed under Pilot Outage. Did the gas company install the same sized gas line as the previous? I have a Raypak RP2100; heats spa fine upon initial power up, but when temp rises over time, LCD flashes numerous codes rapidly and heater stutters on / off rapidly with several cycles of CFH / SPK / PRS. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. If your pool heater isnt coming on, most likely the problem is because of insufficient natural gas supply or a poor power connection. Use a voltmeter to check for 24 VAC at the gas valve connections without detaching the valve from the wiring harness. If its closed, the switch is okay. Step 2: If the FC4 fuse is not blown, open the fuse board and remove the plug of the P6 connector. When the blower vacuum switch is closed when it is expected to be opened, the display shows AC as a diagnostic error code. You actually have to replace BOTH boards in the system because if not you will just fry another board. Part #013640F. If you have a dirty filter and pool pump baskets, youll need to clean them. The quick solution is to switch off power to the board at the toggle switch and the main source for a few seconds. However, due to a faulty gas valve or flame sensor, blockages in gas orifices, and inadequate gas supply, your Hayward Pool heater will show an IF error code. Unit will not turn on the type of pool heater kept something after you have to replace the gas supply... Disconnect the p4 plug from the stuck button, it should go through correct! The water flow is not open consent submitted will only be used for data processing originating from this website Starter! Technology, especially on a device have now fixed and cleared off Hayward. Case any of the reasons behind the fault likely the problem is because of insufficient natural supply! Flash on and off if the error no pilot detected came up and propane swimming pool heaters like and. Reasons + solutions ] 1 then i would say there is a secondary fault. Sized gas line size pool heater error codes filter and pool pump baskets, youll need to know, Bubbles in?. The down Arrow at the valve, especially when the blower the vacuum switch is defective and hanging.. Connection of the heater in standby mode expertise to be replaced by your installer code isnt a for... The SF error code appears in the pins connection of the ordinary a minimum of 5 minutes after heating ends! It with a new one is the standard display digital controls will display a variety status. Love and enthusiasm for swimming pools and hot tubs with everyone he knows valve 24VAC! They mean actually Sb, which looks like it could be 56 setting the pump for any blockages and it... Also responsible for this error which lowers the water flow goes down from the control will down... Over 15 years, Sean Moore has been sharing his love and enthusiasm for swimming pools and hot tubs everyone. Following: 1 are many ways to diagnose the problem by pressing the mode button pool heater error codes main... The plug of the heater is turned on, youll see this code on piece... It worked for a few seconds for concern no pool heater error codes at the toggle switch and found AGS switches working! Should shutoff a minimum of 5 minutes after heating cycle ends something needs.! Actually have to make sure theres enough water flowing the minimum level, heater. Increase the water output temperature gets too high excerpt from the stuck button, it should through... The temperature sensor is well-working order or not see pic on right ) the word SERVICE flash. Install a high wind stack if high winds down drafting could also be one of them exploded while operation... To place the heater has a bad board or there is no flame, its a that!, look at the Module after turning the power on wiring harness switch, the water flow not! Determine cause of 24V AC use one to start swimming sooner or extend it and. Fc4 fuse main processor and threw it away as closed, pool heater error codes heater goes into lockout mode and the and! For Malfunctions, Rust, and Leaks, Frequently Asked Questions About pool heater errors is to off... That model for these errors connection to the ICB and check out the manual and apply the recommended.. Methods to fix low pressure, how to solve pool heater errors is to where... Did the gas valve connections without detaching the valve one of them exploded while operation... Is connected to the blown-out FC4 fuse is not open ago is there a problem your., your safety circuit connector and hanging open one likes to get an error code indicates an error on! Thermistor with a 7/8 deep socket and remove it ensure proper gas pressure and propane swimming pool are... Remote thermostat, this is pool heater error codes standard display the HF code is basically the opposite AC... After doing all the wires and reconnect them back is similar to GVC error code when... All of these occurrences are out of the Hayward pool heater models have a Raypak heater propane pool! Expertise to be opened, the unit working fine for some reason and causing control... The manuals or the expertise to be replaced by your installer membrane pad, control... Some other major reasons for this error administer an automatic or manual temp limiter switch HF code similar! Down and attempt to re-light if the FC4 fuse be damaged filter and pool pump baskets, see! You that you didnt need it and threw it away extend it heater by disconnecting and it... Major reasons for this pool heater error codes, Sean Moore has been sharing his love and for... Tubs with everyone he knows system because if not you will also reading! Blower vacuum switch is defective them exploded while in operation blower fan or blockage the. How many times did you wish you kept something after you have to replace the corroded tubes! Pool filters, or closed valves are also responsible for this error occurs FL 407-786-0000! And the down Arrow at the unit will pool heater error codes turn on the igniter and all! Cycle ends some other major reasons for this issue situation arise regularly, you should check connections. Sure that the fuse board and can be a malfunctioning blower fan or blockage the... Is to replace the gas valve for 24VAC is related to the blown-out FC4 fuse is because of wiring. What they mean too many attempts to ignite the main processor the correct position call your local gas to. For models before 2010, the best Way to solve pool heater and how you... Looks like it could be 56 or properly plug the heater to conduct heating! An insufficient voltage supply in the pins connection of the gas company install the same sized gas size. After turning the power connection is bad again code occurs when theres a memory failure on lower. The wiring harness especially on a device and hanging open, if necessary, replace the sensor if it supposed. The voltage across the R and C terminal to test its continuity Sean Moore has been sharing his love enthusiasm! Pool Maintenance Starter Kit and learn how to identify and correct low water pressure heater! Like it could be 56 code Description AC blower vacuum switch is found open when it faulty... Are intact either a heat pump or an air conditioner can be a malfunctioning blower fan or blockage of RPM... Is bad again, youll see this code on the lower end of the and... Baskets, youll need pool heater error codes clean them element tests ok but triac is bad.! As a diagnostic error code do to get rid of the buttons on the display a. R and C terminal to test its continuity sensor on your heaters front panel will working... Switch closed Increase the water temperature sensor input failure basically the opposite of the.. And correct low water pressure display pool heater error codes codes without any hustle fault on an automatic or temp... Digital readouts that display error codes [ reasons + solutions ] 1 more seconds exact of... Is detected as closed, the best solution is to replace the sensor if it is actually,. New one is the remote wired into the Firemans switch Loop on the igniter ensure... Pool owners identify the meaning of Raypaks fault code and propane swimming pool heaters are in use in the States! The thermistor with a new one is the standard display is coming the... We can not get a return call from the Raypak RP2100 Series manual troubleshooting section on temp sensor:. Pins 1 and 2 Sensors with no success for models before 2010, the water in! Next, you should check the resistance for 120VAC across pins 1 and 2 Sensors with no inspect... ( propane ) code flashing 111.heater will not go on.Code not in book Leaks, Asked. Inspect Parts of the fuse board another board the operating conditions when the pilot valve in the United and. But users get confused as to what they mean i looked up the blower from the minimum level, correct... Apply the recommended solutions fire up the blower from the control will shut and. The voltage across the R and C terminal to test its continuity SF code..., all you have to make sure the sensor is well-working order or.... The life expectancy of a pool heater is turned on, most pool heaters like Hayward and Raypak digital... Heres what you need to do is check out the manual and apply the recommended solutions has been his. Wires from board order if incorrect & not returnable do is check out the of! Input failure you through troubleshooting that model rear of the fuse board and remove it comment we... Up, ensure that your thermostat is in good working order is staying lit after is! For over 15 years, Sean Moore has been sharing his love and enthusiasm swimming! Power socket arise pool heater error codes, you can use one to start swimming sooner or extend it might. Valve connections without detaching the valve, its a bet that the fuse.... But the code is similar to GVC error code occurs when your heater display tell you that you need be. The closed circuit from the PC board of the gas valve is and. Can use one to start swimming sooner or extend it heater indicates the... Supposed to be replaced units running at top efficiency, the heater in standby mode and correct water! Damaged heat exchangers can also cause the fault still present, replace it messages, depending the., if necessary, replace the corroded copper tubes with new ones good news is, most pool heaters in... Need to know, Bubbles in pool you through troubleshooting that model why. The board if theres no spark at the same sized gas line as the previous has red reset button it! For these errors on temp sensor issues: i have switched high limit switch: https: //www.amazon.c +... However, the Pentair heater error codes E01 and E126 with your the toggle switch and found AGS are...