Hayward pool heater says lo

Hi all. I have a Hayward pool heater (model #H250FDN). Over the past week, the heater fired up and heated just fine. All display functions seemed to operating normally (temperature read out was good, i was able to cycle the mode from standby, to spa, to pool, and back to standby).

Step 1 Step 2 Press the 'MENU ICON' button to place the heater in 'STANDBY' mode. Step 3 Press and hold the minus & plus buttons for. Hayward HDF400 | Universal HC Series Heater Troubleshooting Guide - Page 11. setting the max temp lock-out set point, the LEDs & display should flash rapidly.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.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.Pool Covers. In addition to heating your pool or spa, you can enhance the warming effect by adding a cover to maintain a comfortable water temperature. Using a swimming pool cover when the pool is not in use can reduce your heating costs by as much as 50-70%. Read Pool Covers Save Water and Energy to learn about additional benefits.Low Pressure Switch Lockout. The control ignores an open low pressure switch for the first 30 seconds after the compressor is energized. If the low pressure switch opens for 3+ seconds any time after this 30 second period, the compressor will shut down and " Lo Press Trip " will show on the display. If the low pressure switch trips 6 times ...Low and High Salt Alarms can be observed when the salt in parts per million is outside of the expected range in a Body Of Water. Salt Chlorination takes place while the Salt Level is between 2400 and 3800 ppm . A Low Salt Alarm is generated when the Salt ppm is between 2400 and 2700 ppm for Standard. For Low Salt Monitoring it is between 800 ...

Change/Replace Combustion Chamber Disconnect gas & water unions Remove screw from Display Step 1 Step 2 Turn Power and gas off to unit, disconnect the gas Using a 5/16 nut driver or #2 Phillips Head line and plumbing unions from the heater. screwdriver, remove screw from below display.Hayward H400FDN Pdf User Manuals. View online or download Hayward H400FDN Owner's Manual, Troubleshooting Manual ... LO" Code. 46. Pressure Switch Adjustment. 49. IF" Code. 52. AC" Code. 57. AO" Code. 58. ... Brand: Hayward | Category: Swimming Pool Heater | Size: 1.88 MB Table of Contents. Table of Contents. 2 ...Jul 6, 2011. 4,177. FL. Jun 6, 2019. #4. rock909 said: @ps0303 Any assistance is appreciated the part arrives today planned on tackling this week. Turn off power to heater and also turn off your pump. Remove the top and bottom side panel as well as the two front panels.Hayward - H-Series Above Ground Pool Heater Propane 135,000 BTU. Item No. 957276 | Manufacturer SKU: W3H135FDP. $1,999.00. Buy in monthly payments with Affirm on orders over $50. Learn more.This product must be installed and serviced by authorized personnel, qualified in pool/spa. heater installation. Improper installation and/or operation can create carbon monoxide gas. and flue gases that can cause serious injury, property damage, or death. U.S. PATENT NOS. 6,026,804 & 6,321,833.Examples: Gas heater and heat pump exchangers, temperature and pressure sensors, VSP drives, pump motors, blowers, fan motors, compressors, robotic cleaner motors and power supplys, circuit boards, flow-switches, UV lamps, and keypads. 1 year parts warranty only. No labor coverage. XE series Power Ends and single speed Super Pump® TEFC motors.

With over 300,000 members, TFP is the largest and most influential pool & spa website on the Internet. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. It is being practiced by thousands of pool owners just like you. We are a registered 501(c)3 non-profit that is funded by user donations.I installed a hayward 300k btu pool heater for my in ground pool. Everything seems to be working, except I get the LO code on the readout. My pool is 25 yrs old, and was plumbed with 2" PVC, and I hav … read moreA quick, simple, and to the point video on how to operate your Hayward H-Series Pool Heater both in natural gas or propane format. This covers all models fro...5.1 Common Issues With Hayward Pool Heaters And Their Solutions; 5.2 Identifying And Fixing Problems With Hayward Pool Pumps; 5.3 Troubleshooting Hayward Variable Speed Pumps; 6 Frequently Asked Questions. 6.1 How Do I Reset My Hayward Omnilogic? 6.2 Why Does My Omnilogic Keep Losing Connection? 6.3 Why Is My Hayward Heater Not Firing?Description: H-Series MilliVolt heaters feature a rust-resistant water path with polymer header assembly, and a rapid-heat combustion chamber. They are easy to install and maintain, thanks to its low profile, lightweight and CPVC plumbing capabilities. H-Series MilliVolt heaters are all equipped with a Cupro Nickel Heat Exchanger for efficient ...

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Our network of certified personnel can help you build your pool, recommend a product, repair a faulty product, and test your water. Find a professional near you. Hayward offers environmentally responsible, cutting-edge pool and spa equipment for residential and commercial, in-ground and above-ground pools.21. 4.8K views 2 years ago. My pool heater would not fire and was showing the LO (low flow) code. This shows where the adjustment knob is on the pressure switch and insight into how to...Jun 20, 2022 · 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... May 7, 2022 · April 9, 2023 by William. Hayward pool heater IF code basically signifies the ignition failure of your heater system. The major reasons for Hayward pool heater code IF/ignition failure include lower gas supply, clogged filter, and malfunctioning of the gas and plumber valve. Also, a faulty transformer, defective flame sensor, bad igniter, and ... Generally, LO refers to the pressure switch, water pressure. This can be caused by either the diaphram in the flow switch has failed or the filters is clogged and/or pump is unable …The HP21104T is part of the Hayward HeatPro line of electric heat pumps designed for inground pools. It's quiet and energy efficient, which makes it a great way to heat your pool and maintain its temperature. Because heat pumps use the surrounding air to heat the pool water, the HeatPro is best suited to locations where the temperature rarely dips below 50 degrees Fahrenheit.

Additionally, if you have a variable speed pump, turn it to max to see if that fixes it. Cleaning the pool, emptying the strainer basket at pump, etc; ensuring that the pump can circulate is really important, recommended clearing any debris from pool as well. Hope it works out and you enjoy the pool season.You power the heater on you hear a light clicking them immed says LO. I have tried taking it off the Omnilogic - same problem. Submitted: 4 years ago. Category: Pool and Spa. Show More. Show Less. Ask Your Own Pool and Spa Question. Share this conversation. ... I have a Hayward ng pool heater. Low nox H250... it has been sitting idle for two years.Additionally, if you have a variable speed pump, turn it to max to see if that fixes it. Cleaning the pool, emptying the strainer basket at pump, etc; ensuring that the pump can circulate is really important, recommended clearing any debris from pool as well. Hope it works out and you enjoy the pool season.Hayward Heater Lo Code is a device that is used to heat the water in swimming pools. It is a very popular choice among pool owners because it is very efficient and easy to use. The Lo Code Hayward Heater is made of high quality materials that make it durable and long lasting.I have a Hayward H400FDN heater. Have a aqua links control in side my house . When I turn on my heater and select pool on my aqua links, it works perfect but when I switch to spa heat it stays on pool … read moreYou don't need a fancy test meter to troubleshoot a pool heater. ELECTRONIC POOL HEATER TROUBLESHOOTING GUIDES. For our example heater, we will be using the Old Teledyne Laars Series I & Series II Spark Ignition heaters, made from 1986-1997; but the concepts apply to electronic heaters made by Raypak, Hayward or Purex - RP2100, H-Series or ...A pool heater is an essential component of any swimming pool, especially in areas where the weather can get chilly. If you own a Hayward pool heater and it breaks down, you need to...With over 300,000 members, TFP is the largest and most influential pool & spa website on the Internet. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. It is being practiced by thousands of pool owners just like you. We are a registered 501(c)3 non-profit that is funded by user …The Hayward Universal H-Series gas heater is one of the most energy-efficient Pool and Spa heating solutions on the market! Its ground-breaking hydraulic design reduces pump circulation run time, giving you an energy savings of up to 18%! This unit is perfect for the environmentally conscious Pool and Spa owner thanks to its Low NOx capabilities.Just starting up my pool. Pump is running, water is flowing through heater, heater plugged in, gas on. Service panel says Lo and "service". I've tried switching mode to pool with a heat setting of 80F … read moreYour pool heater needs enough water pressure to run properly, usually at least 40 GPM (gallons per minute). If your heater is not getting a steady stream of water, it could be due to a clogged filter or dirty pump basket. Turn off your heater and pump before cleaning. Clean the filter, skimmer, and pump baskets.

Learn How a Pool Works; Learn How Solar Pool Heaters Work; Learn About Hayward. At Hayward, we're more than just equipment. Learn more. Hayward Insights. Hayward Insights. Hayward Insights provides expert advice, tips, and industry updates to help pool owners and enthusiasts with their swimming pool experience.

🤷‍♂️ Who we recommend this heater for:. The Hayward H-Series natural gas heater isn't dependent on temperature conditions, so even if you want to swim when it is chilly (e.g. temperature drops below 50°F), it won't be a problem.. If you don't want to wait a long time to swim in the pool, the Hayward heater will be perfect. It is the quickest heater among those on our list.Jun 5, 2016 ... samlol23•97K views · 2:32. Go to channel · How to fix the LO error code on Hayward H series pool heaters. Don - G-TEL•123 views · 7:20. Go to&n...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.Learn How a Pool Works; Learn How Solar Pool Heaters Work; Learn About Hayward. At Hayward, we're more than just equipment. Learn more. Hayward Insights. Hayward Insights. Hayward Insights provides expert advice, tips, and industry updates to help pool owners and enthusiasts with their swimming pool experience.If you're looking for help fixing your Hayward Pool Heaters, look no further! Our comprehensive Hayward Pool Heaters Troubleshooting guide will explain commo...HU-429948972. 3 years ago. Hi I just hooked up a new 150,000 Hayward. With pump on low speed I get the LO code. So I put on high speed and LO code immediately goes away but then within 30 seconds I get HS code and shut down. 724-977-7371. Like.The Universal H-Series is an energy efficient, high performance, installation adaptable commitment to the pool service professional. ... Hayward Insights provides expert advice, tips, and industry updates to help pool owners and enthusiasts with their swimming pool experience. ... UHS Heater How To Guide (opens in new tab) Energy Guide Label ...I have a Haywood electric heater it starts then stops. And it says low pressure switch. Where is this switch located. Reply. ... Reply. Bob Vido says: July 26, 2021 at 1:19 PM. Hi all. I have a Hayward pool heater (model #H250FDN). Over the past week, the heater fired up and heated just fine. All display functions seemed to operating normally ...April 9, 2023 by William. Hayward pool heater IF code basically signifies the ignition failure of your heater system. The major reasons for Hayward pool heater code IF/ignition failure include lower gas supply, clogged filter, and malfunctioning of the gas and plumber valve. Also, a faulty transformer, defective flame sensor, bad igniter, and ...Hayward's pool heater saves money by being the most energy efficient solution for any pool/spa. It's designed for ultimate performance, comfort and durability while being environmentally responsible. For rapid comfort, we offer the Universal solution. Universal H-Series. H300FDP Universal H-Series Propane Gas 300,000 BTU Low NOx (Expert Line ...

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Pump is running, water is flowing through heater, heater plugged in, gas on. Service panel says Lo and "service". I've tried switching mode to pool with a heat setting of 80F …Replaced Hayward 400 with new H400FD pool heater. I'm getting a LO alarm before reaching 104 degrees. ... Replaced Hayward 400 with new H400FD pool heater. I'm getting a LO alarm before reaching 104 degrees. And a HS alarm. ... and has replaced 2 boards inside the pool heater and still not working. what happens is when you set the temp at say ...Jun 14, 2016 · I have Hayward H150FDN Universal H-Series, Low NOx, 150,000 BTU, Natural Gas, Pool and Spa Heater and I am getting a LO code with is a flow problem. I have my intermatic timer set for 755am to turn on and give my equipment power, then at 8am the Hayward pump turn on. 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 ... 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 (SCAQMD) Low NOx emission standards, making it ideal for use in states with strict air quality guidelines such as California. The hayward pool heater drain plug is located at the bottom of the heater unit. When removing the drain plug, ensure the heater is turned off, the gas supply is disconnected, and the water has cooled down to prevent any accidents. Introducing a well-rounded swimming pool maintenance involves several essential tasks, and one of them is draining ...1. First, check that your filter pump is On. Next, ensure the heater is enabled and the set point is higher than the current water temperature. Select the bow to water. Press the heater tile to enter the heater's menu. 2. Ensure the heater is enabled and the set point is higher than the current water temperature.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.What Does A High Limit Switch Do On A Pool Heater. The high limit switch on a Hayward pool heater is a safety device that is wired in series with the gas valve and the thermostat. If the water temperature going into the pool heater exceeds the maximum set, the gas valve will close, shutting off gas to the burners.Find a Hayward product dealer near you. For any inquiries or assistance, please contact us via email. We are here to help! Get expert assistance for your pool-related queries! Contact our dedicated team today for personalized solutions, advice, and top-notch support. Reach out via phone at (908) 355-7995 or email for unparalleled customer ... ….

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. Key Takeaways. The P5 code on Hayward pool heaters indicates a problem with the pressure switch. Common causes of the P5 code include clogged filters, improper water flow, and electrical issues. Troubleshooting steps for the P5 code involve checking water pressure, inspecting the heat exchanger, and verifying the gas supply.With over 300,000 members, TFP is the largest and most influential pool & spa website on the Internet. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. It is being practiced by thousands of pool owners just like you. We are a registered 501(c)3 non-profit that is funded by user donations.Note: Above 6,000 ft altitude be sure to ask for special high altitude heater. Ships by freight. Please allow an extra 5-7 business days for delivery. Enjoy warm dips with the 200K BTU Hayward H-Series LP Heater! Energy-efficient, low NOx, & built for saltwater pools. Dependable & corrosion-resistant.Mar 1, 2015. #1. We have a 2 1/2 year old SR400NA we use to heat our SPA. Last night the SPA would only heat to 94 degrees as reported by out Pentair Water Easy Touch controller. The water was lukewarm at best. I tried shutting off the breakers to all the pool equipment to see if that woul reset everything, but that did not help.Aug 7, 2021. #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 …With over 300,000 members, TFP is the largest and most influential pool & spa website on the Internet. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. It is being practiced by thousands of pool owners just like you. We are a registered 501(c)3 non-profit that is funded by user donations.H250FDNASME, H250FDPASME, H400FDNASME, and H400FDPASME. H135ID1, and H135IDP1. Water Pressure Switch Replacement Procedure. FDXLWPS1930 for Universal H-Series (Forced-Draft) Heaters. This kit is intended to be used only with Hayward Universal H-Series (forced-draft) gas heater models. These heaters may be.Key Takeaways. The P5 code on Hayward pool heaters indicates a problem with the pressure switch. Common causes of the P5 code include clogged filters, improper water flow, and electrical issues. Troubleshooting steps for the P5 code involve checking water pressure, inspecting the heat exchanger, and verifying the gas supply.Your pool heater needs enough water pressure to run properly, usually at least 40 GPM (gallons per minute). If your heater is not getting a steady stream of water, it could be due to a clogged filter or dirty pump basket. Turn off your heater and pump before cleaning. Clean the filter, skimmer, and pump baskets. Hayward pool heater says lo, 1. First, check that your filter pump is On. Next, ensure the heater is enabled and the set point is higher than the current water temperature. Select the bow to water. Press the heater tile to enter the heater's menu. 2. Ensure the heater is enabled and the set point is higher than the current water temperature. , Keeping this in consideration, what does Lo mean on a Hayward heater? The Hayward heater LO code indicates a fault in the temperature limit switch, vent pressure switch, or water pressure switch.To fix it, ensure the pump is on, is wired and connected well, the water flow is above the required minimum pressure, the filters are clean., POOL AND SPA/HOT TUB HEATERS H150FD, H200FD, H250FD, H300FD, H350FD, H400FD & H500FD MODELS SERVICE & INSTALLATION MANUAL FOR YOUR SAFETY This product must be installed and serviced by authorized personnel, qualified in pool/ spa heater installation. Improper installation and/or operation can create carbon monoxide gas, If the pool heater coil breaks, the pool heater will no longer produce heat. In this case, you must replace the pool heater coil. 2. Replace the Pool Heater Motor. The motor is responsible for turning the pool heater on and off. If the motor is not working properly, the pool heater cannot operate. In this case, the pool heater needs to be ..., This item: Hayward W3H250FDN Universal H-Series 250,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas $3,179.00 $ 3,179 . 00 Get it Apr 24 - 29, When my solar heater turns on, my heater stops working, the service light comes on and the LED displays "LO" . I see from doing some reading that this means the flow sensor has low flow. The filters are not dirty as this is a brand new pool. Is this normal? Can the solar and the heater not..., Key Takeaways. The P5 code on Hayward pool heaters indicates a problem with the pressure switch. Common causes of the P5 code include clogged filters, improper water flow, and electrical issues. Troubleshooting steps for the P5 code involve checking water pressure, inspecting the heat exchanger, and verifying the gas supply., Low and High Salt Alarms can be observed when the salt in parts per million is outside of the expected range in a Body Of Water. Salt Chlorination takes place while the Salt Level is between 2400 and 3800 ppm . A Low Salt Alarm is generated when the Salt ppm is between 2400 and 2700 ppm for Standard. For Low Salt Monitoring it is between 800 ..., Jul 6, 2011. 4,177. FL. Jun 6, 2019. #4. rock909 said: @ps0303 Any assistance is appreciated the part arrives today planned on tackling this week. Turn off power to heater and also turn off your pump. Remove the top and bottom side panel as well as the two front panels., Here I go over some of the most common problems that affect these Hayward, formerly Summit Heat pump or thermopump pool heaters. Flo (no flow) and LP (low pr..., LO Code Pages 40-43 IF Code Pages 44-46 AC Code Page 47 AO Code Page 48-50 ... Heater must then be in Spa or Pool Mode for operation. The heater will ... Hayward …, Faulty water temperature switch, malfunctioning vent pressure switch, and defective temperature limit switch are accountable for displaying the Hayward pool heater LO code. Also, the damaged flow switch diaphragm and clogged filter are responsible for showing this code on your pool heater. However, going through the article, you will learn all about reasons behind LO, >Pool Supply Unlimited has parts for Hayward Universal H-Series Low NOx Induced Draft Pool & Spa Heater | 400,000 BTU | Propane | H400FDP. POOL. ... Hayward Heater Display Board H-Series Low NOx Models | IDXL2DB1930 ... ayudarle a diagnosticar los problemas de su equipo y escuchar acerca de cómo podemos mejorar y todo lo que está en su mente ..., Offers heating that is energy efficient and environment friendly. Please review the For Your Swimming Pool brochure. Patented bypass design ensures better hydraulic performance. View More Details. BTU Rating: 399900. 199900. 200000. 399900. Pickup at South Loop. , 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. […], If the Flowsensor persistently detects a No Flow state the system may need to be inspected and maintained by a Hayward Authorized Servicer . The Flowsensor detects water flow from the filter pump in a Body Of Water. It is unsafe to run water treatment features, such as heating, Chlorination, or pH adjustments while there is no water flow., Hayward Insights provides expert advice, tips, and industry updates to help pool owners and enthusiasts with their swimming pool experience. Gain insight. ... Phase Heaters: 1.0000: Pool Type: In Ground: Product Dimensions: 24 " x 25 " x 29.5 "Product Height: 24 in: Product Length: 29.5 in: Product Weight: 165 lb: Product Width: 25 in:, Average Life Expectancy of a Pool Heater. Here's the quick answer - pool heaters can last anywhere from 10 to 25 years or more, depending on the type of pool heater, how regularly it is maintained, and how thorough the maintenance is. Gas. Gas pool heaters can last up to 5 to 10 years., 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., Deactivate all the breakers in the bottom of the control box and wait 5-10 seconds, then re-supply power to the control and check the display. If the problem has gone away the issue should have been cleared. If the problem persists, contact Technical Service for assistance 908-355-7995 (Monday - Friday, 8:00 am - 5:00 pm)., Hayward salt systems are a popular choice for homeowners looking to maintain their swimming pool water in a clean and safe condition. These systems use salt to generate chlorine, e..., I have Hayward H150FDN Universal H-Series, Low NOx, 150,000 BTU, Natural Gas, Pool and Spa Heater and I am getting a LO code with is a flow problem. I have my intermatic timer set for 755am to turn on and give my equipment power, then at 8am the Hayward pump turn on. Can the heater be on..., Hayward H400FDP Pdf User Manuals. View online or download Hayward H400FDP Owner's Manual, Troubleshooting Manual ... LO" Code. 46. Pressure Switch Adjustment. 49. IF" Code. 52. AC" Code. 57. AO" Code. 58. ... Brand: Hayward | Category: Swimming Pool Heater | Size: 1.88 MB Table of Contents. Table of Contents. 2 ..., Hayward H400FDN Pdf User Manuals. View online or download Hayward H400FDN Owner's Manual, Troubleshooting Manual ... LO" Code. 46. Pressure Switch Adjustment. 49. IF" Code. 52. AC" Code. 57. AO" Code. 58. ... Brand: Hayward | Category: Swimming Pool Heater | Size: 1.88 MB Table of Contents. Table of Contents. 2 ..., Follow these guidelines for troubleshooting low gas pressure issue with pool heaters. By John F. Ott. Static and load: For this test, attach the manometer to the inlet side of the gas valve (shown). Remember to turn the main gas valve OFF before connecting/removing the manometer. And replace the Allen head plug before moving to …, The pipe leaving the gas meter towards the pool heater appears to be 1.25" but when it re-appears next to the heater, it looks like it is only 1". The gas plumber dismissed this and said that the pipe diameter was large enough for the length of the run (about 15 feet)., 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., Consider the age of your pool heater: If your hayward pool heater is reaching the end of its expected lifespan, a replacement might be more cost-effective than constant repairs. Evaluate repair costs: Compare the cost of potential repairs to the price of a new hayward pool heater. If repairs are excessive, a replacement could be a smarter …, Here I go over some of the most common problems that affect these Hayward, formerly Summit Heat pump or thermopump pool heaters. Flo (no flow) and LP (low pr..., My Hayward spa heater (installed 2018) is not heating the water and is displaying this LO code. I have read every troubleshooting guide and watched every video I could find. My diagnostics included: 1. Cleaned the filters, even ran the pump without the filters - still LO 2. Checked wires at pressure switch for continuity - still LO 3., I recently bought a house with a in ground pool/hot tub combo that includes a Hayward H400 pool heater. It was a bank owned house where the pool had been sitting without filtering for probably 6 months. After getting everything cleaned up, having the system gone through, I fired it up and the..., First, Power cycle the Omni Controller by selecting the power button at the bottom left of the screen, followed by pressing the shutdown option. Once the controller display is shutdown, turn power off using the breaker, wait 60 seconds and power back up. Wait 3 minutes and then check to see if the connection has been re-established., 🤷‍♂️ Who we recommend this heater for:. The Hayward H-Series natural gas heater isn't dependent on temperature conditions, so even if you want to swim when it is chilly (e.g. temperature drops below 50°F), it won't be a problem.. If you don't want to wait a long time to swim in the pool, the Hayward heater will be perfect. It is the quickest heater among those on our list.