Lo code on hayward heater

A 30% fill on propane can cause issues with a pool heater, but not the one you are having. Heater manufacturers recommend nothing lower than 50%. At 30% you can get a very ugly flame at the burners. From Hayward: "The Hayward heater LO code indicates a fault in the temperature limit switch, vent pressure switch, or water pressure switch. To fix ...

Lo code on hayward heater. 200K BTU. 250K BTU. 400K BTU. Select Gas. Natural Gas. Propane Gas. 1 year warranty. Hayward H-series Pool Heater provides an energy-efficient and environmentally responsible low NOx performance solution for pools and spas! Cupronickel Heat Exchanger with Totally Managed Flow provides exceptional corrosion resistance and erosion protection.

I fixed Lo error! hayward spa heater was giving me a LO error when I turned it This is how I fixed it within less than a minute easy steps.

So the H250 with an input of 250,000 BTU’s actually puts 210,000 BTU’s into the water per hour. Discounting heat loss (which there is always some) if you are using a Hayward gas heaters to heat the 18,000 gallon pool we have discussed above you will need: 22.58 therms of natural gas. 24.75 gallons of propane.HI My Hayward Hseries pool heater shows a LO and stops working when it rains. My temp dropped from 92 to 80. Contractor's Assistant: Who manufactured the pool? I can't recall. It is a semi-inground purchased through Great Escape 5 years ago. Heater is 5 years old. I replaced the heating tubes last summer.Feb 2, 2023 · Stumbling upon a 'LO' code on your Hayward heater can be quite the head-scratcher. Don't worry, you're about to unravel the mystery behind this cryptic message. This code typically indicates a water temperature sensor error, but it can also be a sign of other underlying issues with your pool heater.Hi-Limit Switch Replacement for Hayward H-Series Heaters (135°F) The Hayward High Limit Switch is an important switch in your H Series pool heater, and is used to detect when your water temperature has exceeded a safe level (135°F) and immediately opens the heat exchanger outlet when that happens. Refer to your Hayward H Series manual for ...Before purchasing a heater, a pool owner should become more acquainted with their state health and safety codes. Lo-Nox heaters are a more environmentally safe way to heat your pool. They are designed using combustion control to minimize levels of nitrogen-oxide (Lo-Nox). ... I am looking to replace our heater. We had a Hayward …LO is limit string open. Check the limits for continuity and try resetting the rollout switches. Ask Your Own Pool and Spa Question. Customer reply replied 8 years ago. ... Hayward 250 pool heater throwing AO code. Replaced control board, blower motor, pressure switch, igniter. Still not turning on.Understanding the Lo Code Error Message. If you own a Hayward pool heater, you may have experienced the "Lo" code error message at some point.

Hayward H400 Low Nox If Code Hayward H400 Low Nox If Code. By GoodGirl May 13, 2010 in All Swimming Pools Types ... Members; 7 Report; Share; Posted May 13, 2010. Hi everyone, I have a Hayward H400 IDPL2 heater - it is propane and low nox. This is my 3rd season with it. When we started our pool we noticed that the heater will cycle on, try 3 ...Remove front & rear panels Remove wires from limit switches. Step 13. Remove the 4 screws from the bottom of the front and rear panels and pull up and out to remove each one. Step 14. Use needle nose pliers to remove the 2 red wires from each of the high limit switches. Remove wires from water pressure switch.The Hayward Heater HS code indicates that either your water temperature has exceeded a maximum of 104°F or the water temperature is changing at an unusual rate (faster than 6°F in 60 seconds or less while the heater) is on and firing.Search titles only Through: Search Advanced search…Dec 9, 2022 ... Hayward H400 Pool Heater IF Error Code ignition Failure (IDXLFLS1930) Flame Sensor Replacement · Comments10.Fixing the Hayward Heater AO Code: Now that we’ve identified the common causes, let’s explore the fixes to resolve the AO code issue: Inspect and Clean the Air Intake: Start by turning off the heater and inspecting the air intake. Remove any debris or obstructions that may be blocking the airflow. Ensure the intake is clean and clear.

If closed, LO code is Swimming Pool Heater Hayward H150FD Owner's Manual. Troubleshooting chart for Hayward Universal H-Series millivolt pool heaters, with SCREW 1 TURN CLOCKWISE, TO SEE IF LO ERROR CODE CLEARS. Our system has returned the following pages from the Hayward H-Series data we hayward hFrom plex.page HAYWARD HEATER LO CODE: CAUSES AND FIXES - AIRLUCENT 2021-11-11 · The Hayward heater LO code indicates a fault in the temperature limit switch, vent pressure switch, or water pressure switch. To fix it,Got a heated pool? This Hayward HeatPro heat pump pool heater stopped working. Here's a Solution!What's in your Veto? Here is mine:Veto TP-XXL https://amzn.t...HeatPro Series Heat+Chill Pump 110,000 BTU. Heating swimming pools is a wise investment as it increases its value and extends the swimming season. So to graduate to a higher degree of comfort and control, choose a Hayward pool heater.Main Takeaways. When troubleshooting a pool heater, check the power, temperature settings, filter, pool pump, and plumbing valves. Some common issues with gas pool heaters are with the pilot light, leaks, dark exhaust, and rust. I recommend contacting a professional to help with complex fixes such as electrical, plumbing, or motor issues.

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Pool heaters work very straightforwardly: they generate heat to raise the water temperature. As long as they have a reliable water supply, the heater will not overheat. That’s why your unit will display the LO code when there’s something wrong with the water supply. The LO code signifies that there’s a low water pressure condition. […]Rinnai tankless water heaters are known for their efficient and reliable performance. However, like any complex appliance, they can occasionally encounter issues that require troubleshooting.Wow that was quick. I have a Hayward 250H inground pool heater. The heater would go on an off intermittently. I would cycle it through the two mode and could get it to stay on. Now it has stopped and … read moreHayward Pool Heaters. Hayward pool heaters are known for their durability and ease of use. They are designed with a cupro-nickel heat exchanger that resists corrosion and lasts longer than traditional copper exchangers. Hayward heaters also come with a digital control panel that allows you to adjust the temperature and settings easily. Conclusion

Understanding the Lo Code Error Message. If you own a Hayward pool heater, you may have experienced the "Lo" code error message at some point.Lo code has new thermostat ,bypass valve filter clean i think it is running hot the gas pipe going into the gas valve very hot to touch .jumped the temperature limit loop the lo went away. All three are brand new I think it must be over heating. ... Hayward h100id heater propane turns on and lights right up but after about 5min. the gas shuts ...SKU: HLOMNIHUB. Installs quick to deliver smart pool and spa control in any backyard. With the ability to control virtually every piece of pool and spa equipment right from a smartphone, tablet or voice control device, OmniHub is an easy add-on to existing pool pads. Add to Compare. Add to Export.My pool heater quit working. It would try to start, but then fail. The error code "IF" was displayed. It was an "Ignition Failure Lockout". I looked at a...#1. Hello, I have a H150FDN pool heater. It's worked all summer so far, but last week I noticed that it would turn on for a few minutes then turn off and show Lo. The filter is clean and the output is strong.1.3 Heater Cycling On And Off. 2 Troubleshooting Steps. 2.1 Check Gas Pressure And Fuel Supply. 2.2 Inspect Air Supply And Venting. 2.3 Ensure Proper Water Flow. 2.4 Clean Filters And Pump. 2.5 Adjust External Bypass If Needed. 3 Tips For Diagnosing Problems. 3.1 Follow The Heater Start Sequence.LO Code. A Hayward LO item is a limit string open faults that occurs when any of the safety circuits on your Hayward pooled heater unlock. This forces the heater to shut down to protect your heater from harm. ... Hayward heaters are 84% efficient real such resources you get 84% about the BTU's that you put into who heater added to the pool ...THanks for your help and advice I have an older H400 Hayward Pool heater that is struggling to heat the water . Mostly it is working but keeps going off on "LO" . BUt after a time it seems to cool and then kick back on . I did change the pressure switch last year and it did not seem to be the problem but it should have been the fix .Fixing a Hayward Heater LO Code: Step-by-Step… Solve Hayward Pool Heater BO Code: Easy… Sta-Rite Pool Heater Troubleshooting: Quick Fixes… Pentair MasterTemp 400: Fix a Flashing Heating Light… Pentair MasterTemp 400: Fixing Ignition Lockout Issues; Decode Richmond Water Heater Blinking Light Codes:…The low NOx emission makes it a perfect choice for the environmentally concerned pool owner. Enjoy a warmer pool this season without your fuel costs skyrocketing. Hayward's Universal H-Series heaters represent innovative heating technology for pools and spas. Its hydraulic performance also saves energy by reducing the circulation time of the pump.

Start heater again. Does low side pressure drop below 30 psi for R-22 unit or 80 psi on a R-410A unit? Figure C. Replace LP switch. See Note 2 below NO Abandon existing switch on Hayward R-22 units. Replacement switch is a screw on switch. Use a swivel tee on the low side access port. On Summit and R-410A (4T) Hayward units the existing switch ...

Heater will not power up Pages 14-22 Open FC1 and/or FC2 Fuse Pages 23-24 ... IO and SB Codes Page 36 SF and HS Codes Page 37 HS and PF Codes Page 38 HF Code Page 39 LO Code Pages 40-43 IF Code Pages 44-46 AC Code Page 47 AO Code Page 48-50 Temperature Lock Out Page 51 ... Hayward Part # FDXLFSKF30 (Qty. 10) Step 1:View online or download Hayward H300FDP Owner's Manual, Troubleshooting Manual. ... Hayward Manuals; Heater; H300FDP; Hayward H300FDP Manuals. Manuals and User Guides for Hayward H300FDP. We have 3 Hayward H300FDP manuals available for free PDF download: Troubleshooting Manual, ... LO" Code. 46. Pressure Switch Adjustment. 49. IF" Code. 52. AC ...Step 4: Disconnect Blower connector from the Control Module.Set the heater to the Pool or Spa setting. To generate a call for heat, lower the set point temperature. Step 5: Measure 120VAC along pins 1 and 2 during the pre-purge period.So i havent used my heater in about a 8 mo- last year i installed a new heat exchanger and used it for most of 2021. By the end of the year we decided to refurbish the pool so i didn't use the pool or heater over the winter months….. finished refurbishing the pool and and tried to fire up the...Just to clarify, you're getting an LO code on your Hayward heater, is that correct? Ask Your Own Pool and Spa Question. Customer reply replied 8 days ago. Customer attachment 5/17/2024 2:03:05 PM.The best way to drain the H100ID1 above ground pool heater is to disconnect the gas and plumbing lines and tilt the heater so all the water is removed. Please make sure to close off the water supply and turn the gas supply off prior to disconnecting the plumbing. You can also use an air compressor or shop vac to blow the water out of the ...When it comes to hayward heaters, there are some common bd codes that you might encounter. Bd1 indicates ignition failure, which can often be resolved by cleaning the ignition assembly. Bd2 suggests water temperature sensor failure, which can occur due to a faulty sensor or connection issue. If you see bd3, it indicates high limit switch open ...Heater Hayward ED2 Fault Code Thumbnails (18 pages) Heater Hayward C-SPA-XI 5.5 Installation And Operation Manual. Pool and spa/hot tub heaters (24 pages) Summary of Contents for Hayward H135ID. ... HAYWARD POOL HEATER CERTIFICATE OF LIMITED WARRANTY LIMITED HEATER WARRANTY: TERMS AND COVERAGE: We warrant our pool heater to be free from defects ...Problem Possible Cause Possible Solution; Heater cycles on & off: 1. Filter or pump baskets are dirty. 2. External bypass is out of adjustment. 3. Internal bypass is broken or stuck.The tech did the install and ran the heater only for a few minutes to check for ignition and stuff. He had done some other plumbing work so he didn't want to run in too long, or the pool pump either, so that the PVC glue really had some time to cure. The heater is a 400,000 BTU Hayward Universal HC Series Model HDF400 Pool Heater.

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I have a Hayward Pool Heater Lo Hox (I think the name) it is about 40,000 BTU natural gas 240 Volt. Blower moter in - Answered by a verified Pool and Spa Expert ... If the blower vacuum switch does not sense the blower vacuum, it will shut down with the ao code. The first thing that woild need to be checked with a meter is the wiring to the ...Answering a viewers request on how to add and program a newly installed heater to a Hayward OmniLogic Automation system.The Universal H-Series Low NOx heater has an 84 percent industry-leading thermal efficiency and complies with all current California air quality emission standards. The low NOx emission makes it a perfect choice for the environmentally concerned pool owner. Enjoy a warmer pool this season without your fuel costs skyrocketing.If your Hayward pool heater is displaying the LO code, it means that the limit string is open and the heater will shut down and enter lockout mode. To fix the problem and close the limit string, you’ll need to wait 2 minutes for the automatic restart.Exact fit for Hayward heater. Replacement part for leaking unit. Part came with new O rings and everything on the header assembly. Easily installed with directions included. Read more. ... I bought the new sensor due to a LO code, but the real issue was low water pressure due to a dirty DE filter!!!!! This replacement part is an exact fit, and ...I have a Hayward H250 Natural gas heater and I just replaced the bypass assembly to the newer model as the old one broke. I am now getting the LO code. * Filter is Clean * I have let the pump run for 2-3 minutes to reset the heater ** Only concern is maybe the red and blue wire going to the back of the water pressure switch. I can not find a ...How to fix the hayward pool heater lo code Hayward h150 pool/spa heater-with operation manual-used- for parts/not Hayward owner. Hayward h150fdn troubleshooting manual pdf download. Hayward h series pool heater manualHayward fdxlhbp1350 heat barrier panel replacement kit for hayward Pool manual hayward heaterHayward h150fdn heater manual.For hayward pool heater if code repair, check the pressure switch and ensure proper pressure is being reached. Hayward pool heaters display an “if” code when the pressure switch is not closed. This is caused by insufficient water flow, closed valves, air in the system, or a clogged filter. It is important to identify and fix the issue ...Start heater again. Does low side pressure drop below 30 psi for R-22 unit or 80 psi on a R-410A unit? Figure C. Replace LP switch. See Note 2 below NO Abandon existing switch on Hayward R-22 units. Replacement switch is a screw on switch. Use a swivel tee on the low side access port. On Summit and R-410A (4T) Hayward units the existing switch ...Turn off your heater, wait a few minutes, then power it back on. If the AO Code persists, move on to the next step. Check the wiring: Inspect the wiring between the blower vacuum switch and the control board. Look for loose connections, damaged wires, or other signs of wear and tear. If you spot any issues, call a professional for assistance.Phase Heaters: 1.0000: Platform: Square: Pool Type: In Ground: Product Dimensions: 44 " x 30.25 " x 34 "Product Height: 44 in: Product Length: 34 in: Product Weight: 280 lb: ... HP31005T Hayward HeatPro Heat Pump Manual (51300056501RevG) (opens in new tab) Export 0 Assets. Export type selection. Export 0 Assets. Clear Selection ... ….

The Hayward H-Series' Finn Plate cupro-nickel heat exchanger has special V-groove design for faster heating and longer life. Hayward Universal H-Series, Low NOx, 250,000 BTU, Natural Gas, Pool and Spa Heater delivers energy efficient heating to your pool's water that you can trust. Hayward Universal H-Series - Versatility & PowerStumbling upon a 'LO' code on your Hayward heater can be quite the head-scratcher. Don't worry, you're about to unravel the mystery behind this cryptic message. This code typically indicates a water temperature sensor error, but it can also be a sign of other underlying issues with your pool heater.Find helpful customer reviews and review ratings for Hayward W3H200FDP Universal H-Series 200,000 BTU Propane Pool and Spa Heater for In-Ground Pools and Spas at Amazon.com. Read honest and unbiased ... So I was basically muscle and tool getter. After going crazy with the LO code. I finally watched a video and it explained that the problem was ...The default settings for the dip switches on almost all Rinnai Tankless Water Heaters Are: Switch 1: N or P (depending on the gas type) Switch 2: Appropriate setting for gas pressure. Switch 3: OFF. Switch 4: OFF. It is important to carefully follow the instructions in the owner's manual when changing the dip switch settings.Lo code new Hayward Heater. Thread starter CCBRENNER; Start date Jun 28, 2023; Jump to latest Follow Reply Forums. Equipment - Build, Use, and Repair. Everything Else . C. CCBRENNER New member. Jun 28, 2023 4 Pensacola, FL. Jun 28, 2023; Add bookmark #1 I have a new Hayward heater. ...The Hayward Heater HS code indicates that either your water temperature has exceeded a maximum of 104°F or the water temperature is changing at an unusual rate (faster than 6°F in 60 seconds or less while the heater) is on and firing.Hayward SPX3200UNKIT Union Connector Replacement Kit for Select Hayward Pump and Heater. $27.84 $ 27. 84. Get it Jun 4 - 7. In Stock. Ships from and sold by BackyardPoolSuperstore. + Hayward FDXLHDW1930 FD Header Hardware Replacement Kit for Hayward Universal H-Series Low Nox Pool Heater.Hi, I have a Hayward H400IDL2 pool heater. The display on the keypad panel displays intermittently, usually not at all. Touch buttons work and other lights - standby, pool, spa, service and heat all w … Lo code on hayward heater, My heater keeps giving me the lo code I have back washed it a few times I clean the filters. I put a new pressure switch on. ... HI, I have a Hayward Pool Heater Lo Hox (I think the name) it is about 40,000 BTU natural gas 240 Volt. Blower moter in side. It has ran great for the past 6 or so years., Jan 11, 2022 · It is an essential stage if still the heater shows the HS code on the display. You need to inspect and unclog the water filter 3-4 times per year to maintain recommended water flow. Anyway, check out our detailed guide on the Hayward pool heater H5/HS code to learn the detailed solution procedures., Feb 7, 2020. #3. I have the same issue. I have turned off the breaker and the code persists. From what I have read this is a common issue (my heater is only 6 month old) . I don't use my keypad to control the heater (its controlled by the OmniLoigic controller). Anyone have an opinion if its worth replacing the keypad if I always control via ..., Apr 16, 2010 · The "LO" code means "Loop Open", referring to your safety loop switches. Most likely it's your pressure switch that's open due to low water flow usually caused by a dirty filter. The "60" code is really "bO" meaning "bypass operation" in which your heater's internal thermostat is bypassed so as to control the set temperature by your remote. The ..., Home - Trouble Free Pool | Trouble Free Pool, The Hayward H-Series' Finn Plate cupro-nickel heat exchanger has special V-groove design for faster heating and longer life. Hayward Universal H-Series, Low NOx, 400,000 BTU, Natural Gas, Pool and Spa Heater delivers energy efficient heating to your pool's water that you can trust. Hayward Universal H-Series - Versatility & Power, Hello, I have a new inground pool and all brand new equipment. My Hayward 400K heater has worked intermittently for 1.5 days. It brought pool up to temp, but now, keeps getting IF code and wont restar … read more, Exactly what I needed to get my Hayward H250 pool heater, with a LO code, fired up. Less than 5-minute install. Read more. Helpful. Report. Save The Knees. 5.0 out of 5 stars Flow sensor for Hayward heater. Reviewed in the United States on December 11, 2022. Verified Purchase., happy to help with your pool heater. the lo code is indicating that the water flow through the heater is not sufficient enough for the heater to start. This is typically because of a dirty filter. If a sand filter perform a backwash. If cartridge or de filter disassemble and clean., The Hayward Universal H-Series gas heater is one of the most energy-efficient Pool and Spa heating solutions on the market! This unit is perfect for the environmentally conscious Pool and Spa owner thanks to its Low NOx capabilities. The Hayward Universal H-Series gas heater meets or exceeds the South Coast Air Quality Management District's ..., The Hayward H-Series' Finn Plate cupro-nickel heat exchanger has special V-groove design for faster heating and longer life. Hayward Universal H-Series, Low NOx, 400,000 BTU, Natural Gas, Pool and Spa Heater delivers energy efficient heating to your pool's water that you can trust. Hayward Universal H-Series - Versatility & Power, Error codes show up on the digital screen of the H-Series H150, H200, H250, H300, H350, and H400 gas models. Work through the chart below if your heater displays the following error codes. Troubleshooting Hayward Gas Heaters. Below is a list of common issues that can arise with your Hayward pool heater., The Hayward Universal H-Series gas heater is one of the most energy-efficient Pool and Spa heating solutions on the market! This unit is perfect for the environmentally conscious Pool and Spa owner thanks to its Low NOx capabilities. The Hayward Universal H-Series gas heater meets or exceeds the South Coast Air Quality Management District's ..., The Lo Code Hayward Heater is made of high quality materials that make it durable and long lasting. It is also very easy to install and does not require any special tools or skills. If you have a Hayward heater and it's displaying the "Lo" code, don't panic! This simply means that the heater's water temperature is too low., My daughter has a Hayward pool heater that had a 'LO' code and would not work with that code. The dealer who installed the heater 4 years ago, Sunoco pools in Loves Pk, IL, sent repair personnel who acted like deer in headlights said it probably might be the sensor. Last fall, they told her to add chlorine pucks to the Bioguard filter and ..., The Hayward HeatPro 140K Electric Heat Pump is a high-efficiency heater, gives you the ideal water temperature while using 80% less energy than natural gas heaters. It offers an alternative way to heat your pool that is safe, reliable, and energy efficient. Hayward HeatPro Electric Heater takes the heat from the surrounding air and uses it to ..., HeatPro Variable-Speed Heat-Cool Pump 120,000 BTU, Omni Compatible. SKU: HP51202T. Add to Compare., My heater keeps giving me the lo code I have back washed it a few times I clean the filters. I put a new pressure switch on. It is still giving me that lo code ... HI My Hayward Hseries pool heater shows a LO and stops working when it rains. My temp dropped from 92 to 80. ..., Also see: Hayward Heater LO Code Fixes. Or if you are in need of a new heater, check out these new models: Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas . BEST FOR: In-ground pools and spas with a surface area up to 1,200 ft. where natural gas is available. …, Hayward Pool Heaters. Hayward pool heaters are known for their durability and ease of use. They are designed with a cupro-nickel heat exchanger that resists corrosion and lasts longer than traditional copper exchangers. Hayward heaters also come with a digital control panel that allows you to adjust the temperature and settings easily. Conclusion, Step 4: Disconnect Blower connector from the Control Module.Set the heater to the Pool or Spa setting. To generate a call for heat, lower the set point temperature. Step 5: Measure 120VAC along pins 1 and 2 during the pre-purge period. The control module relay is malfunctioning if 120VAC is not provided., Hayward H400IDL2 Installation, Operation & Service Instructions (23 pages) Pool and Spa/Hot Tub Heaters. Brand: Hayward | Category: Swimming Pool Heater | Size: 4.32 MB., Pool heaters work very straightforwardly: they generate heat to raise the water temperature. As long as they have a reliable water supply, the heater will not overheat. That’s why your unit will display the LO code when there’s something wrong with the water supply. The LO code signifies that there’s a low water pressure condition. […], My hayward H250FDN pool heater runs for about a minute then the code comes up LO. I had a technician out and he checked all the safetys and they were good. I had patched a hole in the heat exchanger j … read more, happy to help with your pool heater. the lo code is indicating that the water flow through the heater is not sufficient enough for the heater to start. This is typically because of a dirty filter. If a sand filter perform a backwash. If cartridge or de filter disassemble and clean., The best pools start with hayward. #1 Products brand amongst pool professionals. 95+ Years in business, advancing pool equipment & technology. 2k Innovative team members committed to transforming the experience of water. About us Join our team., Many choose Hayward pool heaters to keep their pool water comfortable and warm. However, sometimes these heaters can experience issues that require a reset. To reset your Hayward pool heater, you'll need to turn off the power, wait a few minutes, and then turn it back on again. This simple process can resolve many common […], My pool heater quit working. It would try to start, but then fail. The error code "IF" was displayed. It was an "Ignition Failure Lockout". I looked at a..., Initially, all pool equipment was functional and we were able to get the heater working. However, the Hayward heater is now giving an LO code, and the service light is on. I’m trying to figure out if this is something I can troubleshoot/fix myself, or if I need a pool or gas technician., The vent pressure switch in your Hayward pool heater ensures and determines the incoming water flow proper amount. Thus if the vent pressure switch is faulty, you will see the Hayward h400 pool heater lo code on the heater’s display. The main concerning causes of it are:, I fixed Lo error! hayward spa heater was giving me a LO error when I turned it This is how I fixed it within less than a minute easy steps., First, check the power source. Make sure the heater is properly plugged in and that the circuit breaker or fuse hasn’t tripped. Next, check the water flow. A low water flow can cause the heater to overheat and shut down. Check the pool pump and filter for any clogs or debris that could be restricting water flow., First, reset your heater thermostat. Now, set the temperature point below 104 degrees. Then, set the function “Ok”. Always keep the temperature under 104 degrees to allow the heater to heat the water at this temperature. Note: Learn how to fix CE code on Hayward pool heater. 4.