Lo on hayward pool heater

Follow the included steps to place the heater in bypass mode for external control. Step 1. Press the 'MENU ICON' button to place the heater in 'STANDBY' mode. Step. The 'SPA' indicator should illuminate & the display should show the Max Temp set point. Step 2. Press and hold the minus & plus buttons for 3 seconds.

Turn the thermostat all the way up on the heat pump. These units are not compatible with 3 wire remotes. For 2 wire air switch installations remove the jumper between terminals 1 & 2 and replace it with the 2 wires from your switch. Set the thermostat on the heat pump to the desired temp. Wiring Diagram HPABG / HP380. 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.Max pump flow is about 100 GPM at that Head. But the pump can turn the water once every 8.3 hours or so since the 2" piping has a max flow of about 72 GPM. Now, If I operate the pump in Lo speed (1/2 the RPM), 1/2 the flow will be 1/2 of 100 GPM (or 50 GPM). And the pump will consume 1/8 the power compared to Hi speed.Turn the thermostat all the way up on the heat pump. These units are not compatible with 3 wire remotes. For 2 wire air switch installations remove the jumper between terminals 1 & 2 and replace it with the 2 wires from your switch. Set the thermostat on the heat pump to the desired temp. Wiring Diagram HPABG / HP380.Low NOx Pool Heaters: Low NOx refers to a type of pool heater, typically gas heaters, that are designed to emit fewer Nitrogen Oxides (NOx) when burning fuel. NOx emissions can contribute to air pollution and have harmful effects on the environment and human health. ... The Hayward Universal H-Series gas heater – the versatile and energy ...Mar 1, 2022 ... Hayward W3H250FDN Pool Heater See On Amazon (US)▻ https://bestchoice3s.com/2023/08/b07sv9516s.html See On Amazon (CA)▻ ...Step 1: Shut the power off and then take out all the screws from the display board. After taking off the whole board you'll see that there is a lower panel on the other side. Take off the two screws and undo them. Step 2: You'll see a ribbon cable. Take that off and then unscrew the underneath panel.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.

Cleaning the burners on your Hayward pool heater is essential for keeping it running smoothly. Follow these simple steps to get the job done: Step 1: Turn off the pool heater and disconnect the gas supply. Allow the unit to cool down before proceeding. Step 2: Remove the front panel of the heater to access the burners.In this video you'll see how a natural gas pool heater is wired and how the wiring is covered from 240 volts (double pole) to 120 volts (single pole). Also, ...The LO code on a Hayward heater means Limit Open, where one of the limit switches is not closing to complete the circuit. To clear the LO code, fix or replace the wiring on the limit switches and any other issues with your heater’s limit switch, and you may need to do a backwash to clear out any obstructions.10 Best Above Ground Pool Heaters. Sale Blue Wave NS115 8-mil Solar Blanket for Round… $121.21 Buy on Amazon Pentair MasterTemp Propane Gas Heater (125,000…. Buy on Amazon Sale Intex Solar Heater Mat for Above Ground Swimming… $29.13 Buy on Amazon. #1.View and Download Hayward H150 installation, operation and service manual online. H150 swimming pool heater pdf manual download. Also for: H250, H200, H300, H350, H400, H210.Reset the Heater: Sometimes, simply resetting the heater can clear the LO code. Turn off the heater, wait a few minutes, and then turn it back on. Professional Service: If you’ve tried the above steps and the LO code persists, it’s advisable to contact a professional pool heater technician. They can diagnose the issue more accurately and ...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. In this article, you'll learn the steps to diagnose and fix the problem, ensuring your pool remains

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. It can raise the temperature of an 800 gallon pool 30 degrees in less than an hour you'll feel the benefits the moment you step into the water.>Pool Supply Unlimited has some of the best prices when shopping for Hayward Universal H-Series Low NOx Induced Draft Pool & Spa Heater | 150,000 BTU | Propane | W3H150FDP ... All Hayward heat exchangers are now constructed with highly resilient Cupro Nickel for greater durability and longevity even in salt-based, high flow or aggressive water ...Oct 18, 2020 ... was getting CE code, aka Communication Error. Replaced main board, display board, and display panel.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 …Checking the Pool Heater Circuit Breaker. First, turn off the power to the pool heater circuit breaker. This should immediately shut down the pool heater. If the circuit breaker does not shut off, you should call a professional service technician to come out and inspect the problem. Next, check the fuse box located near the pool pump.Aug 12, 2019 ... Buttons no longer working on a H350 Hawyard pool heater. Replaced display board and bezel. Problem solved.

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HI My Hayward Hseries pool heater shows a LO and stops working when it rains. My temp dropped from 92 to 80. ... I have an older swimming pool heater a Hayward H400 PED2 that fires up just fine but will shut down in about 2 minutes. When I switch the mode to standby and back to spa the same thing happens.Description: This recall involves the Hayward UHXNEGVT15001 Negative Pressure 6-inch Vent Kit for pool heaters. The vent kit is used exclusively on the Hayward H500FD Gas Heaters. The kit includes the following: one vent pipe adapter for negative pressure galvanized vent pipe, one flue cover plate with hole for vent, #10 sheet metal screws ...Step 2: Locate the inlet and outlet valves on your pool heater. These are typically labeled with “in” and “out” indicators. Step 3: Turn the valves to the closed position. This will stop the water flow through the pool heater. Step 4: Install a bypass pipe between the inlet and outlet pipes on the pool heater.Dec 21, 2023 · 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. SELECTING THE CORRECT SIZE UNIVERSAL H-SERIES HEATER 1.1. Determine your pool's surface area in square feet: Determine your spa capacity in gallons (surface area x average depth x 7.5). 2. In the table below, locate the column with the spa/tub size in ... FOR YOUR SWIMMING POOL FOR YOUR SPA OR HOT TUB » hayward.com » 1-888-HAYWARD

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 ...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.Hayward H400IDL pool heater rust on burn tubes, corrosion on heat exchanger. Thread starter cowgs; Start date Apr 9, 2021; Jump to latest Follow Reply Forums. Equipment - Build, Use, and Repair. Everything Else . C. cowgs 0. Sep 5, 2009 2. Apr 9, 2021; Add bookmark #1 Hello I just took apart my 16 year old Hayward natural gas pool heater to ...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). ... LO - Water Pressure Switch, Vent Pressure Switch, or Temperature ...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.Program Heater Bypass & Temperature Lockout 9-11 8. "SF" or "HS" Code 41 ... Test/Adjust Gas Pressure 13-15 10. “HF” Code 43 Burner Inspection 16-19 11. "LO: Code 44-47 Change/Replace Combustion Chamber 20-26 12. "IF" Code 48-49 ... The default Max temp set points are 90ºF (Pool) 104ºF (Spa). When setting the max temp lock-out set point ...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 ... 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 moreHow to fix it: Check that pool pump is receiving enough water. Ensure that your pool pump is sending water to the heat pump. For variable speed pool pumps, try putting the pump speed up a notch Check for any clogs or backups causing poor water circulation. The same is true if what you use is in your pool is the Raypak pool heater.Jun 22, 2016 ... From https://www.swimmingpoolsteve.com/pages/heater-break.html - If you have a problem with your pool heater in that it will not fire or ... Hayward Universal H-Series H350 Low NOx Pool Heater, 350,000 BTU, Natural Gas - EXPERT LINE NLA ... H350FDN. SKU. 4075. Product Overview. Hayward H-series Pool Heater ... Benefits of Solar Water Heaters - The benefits of solar water heaters are numerous. Visit HowStuffWorks to learn all the benefits of solar water heaters. Advertisement The benefits...

>Pool Supply Unlimited has some of the best prices when shopping for Hayward Universal H-Series Low NOx Induced Draft Pool & Spa Heater | 150,000 BTU | Propane | W3H150FDP ... All Hayward heat exchangers are now constructed with highly resilient Cupro Nickel for greater durability and longevity even in salt-based, high flow or aggressive water ...

Step 2: Locate the inlet and outlet valves on your pool heater. These are typically labeled with "in" and "out" indicators. Step 3: Turn the valves to the closed position. This will stop the water flow through the pool heater. Step 4: Install a bypass pipe between the inlet and outlet pipes on the pool heater.Hayward - Front Header Assembly. SKU: 614836. Details: FRONT HEADER ASS'Y. Availability: In Stock. $569.99. Add to Cart. Keep your pool equipment running strong with Hayward H-Series H250IDL2 - H400IDL2 Low NOx Pool Heater Parts.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 - 29The Hayward W3HP21004T HeatPro Heat Pump lets you maintain the perfect pool or spa water temperature more efficiently than traditional gas and oil heaters without dramatically increasing your power bill. The HeatPro Heat Pump is for in ground pools and can be used on large above ground pools. HeatPro heat pumps can save you up to 80 percent in ...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.The control board oversees the operation of your heater, including monitoring temperature and safety features. In short, the Hayward Heater bD Code means there is a problem with the control board located on the right side of the heater. This can be caused by an open FC4 Fuse, faulty wiring, or a secondary high voltage fault.Step 3: Ensure Thermostat set point is higher then pool or spa water temperature. If okay, proceed to Step 4. Step 4: Check for 120 VAC at the Blue wire terminal of Thermostat (one coming from Interlock Switch or On/Off Switch).If voltage is not present, replace Wire Harness. Otherwise, proceed to Step 5.The Hayward W3HP21004T HeatPro Heat Pump lets you maintain the perfect pool or spa water temperature more efficiently than traditional gas and oil heaters without dramatically increasing your power bill. The HeatPro Heat Pump is for in ground pools and can be used on large above ground pools. HeatPro heat pumps can save you up to 80 percent in ...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.

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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 ... Shop our wide selection of Hayward Pool Heaters; Return Policy; Product Information. Internet # 311793698. Model # HPPW3H400FDN. Store SKU ...Program Heater Bypass & Temperature Lockout 9-11 8. "SF" or "HS" Code 41 ... Test/Adjust Gas Pressure 13-15 10. "HF" Code 43 Burner Inspection 16-19 11. "LO: Code 44-47 Change/Replace Combustion Chamber 20-26 12. "IF" Code 48-49 ... The default Max temp set points are 90ºF (Pool) 104ºF (Spa). When setting the max temp lock-out set point ...Jan 11, 2022 · Step 3: If yes, disconnect the p4 plug from the connection and take the voltage reading of pins 4 and 6. Here you will also get reading for 110-125 VAC. Step 4: In case you are getting the right voltage in both cases, it’s a must say that the fuse is blown and you need to replace it. 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. Hayward H-Series Heater High Wind Stack | HWS250. $422.59. Quantity. As low as $19.50/mo*. Platinum Preferred Manufacturer. Proposition 65 Warning. Product description. Warranty.Hayward H-Series Heater Control Bezel Key Pad Assembly | IDXL2BKP1930. 4.7 (3 REVIEWS) $317.53. Quantity. Flat Rate Shipping $11.95. Platinum Preferred Manufacturer. Proposition 65 Warning. Purchase options.21. NJ. 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 …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 ... ….

If your pool heater isn't coming on, it could be your pressure switch (or you need to backwash/rinse your filter system). This DIY video shows you step by ...Professional Assistance: If you have followed these steps and the IF code persists, it is recommended to contact a professional technician who specializes in pool heater repairs. They have the expertise to diagnose and resolve complex issues and ensure your heater is functioning properly. Hayward Pool Heater LO Code What Does The LO Code Mean?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 19 " x 29.5 "Product Height: 24 in: Product Length: 29.5 in: Product Weight: 135 lb: Product Width: 19 in: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. A malfunctioning temperature limit switch, water pressure switch, or vent pressure switch ...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 ...Ensure the proper installation of the main circuit board within the heater. Check the short ground and high voltage issue and take steps to prevent it. 5. Circuit Board’s Faulty Fuse. Another factor responsible for displaying the Hayward pool heater ce code is the faulty or blown fuse in the heater’s circuit board.Cleaning the burners on your Hayward pool heater is essential for keeping it running smoothly. Follow these simple steps to get the job done: Step 1: Turn off the pool heater and disconnect the gas supply. Allow the unit to cool down before proceeding. Step 2: Remove the front panel of the heater to access the burners.Verify the pump is running & adequate water is flowing through heater. "LO" is NORMAL when the pump is turned off or there is and place it on the terminal with the white wire on the gas valve, then Go To Step 11C. 44; Hayward HDF400 | Universal HC Series Heater Troubleshooting Guide - Page 45 11.Hayward H-Series heater for above ground pools and spas combines reliable technology with ease of operation and superior performance. H-Series heaters boast industry-leading hydraulic performance coupled with a 135,000 BTU rating for faster speed-to-heat capability. Their intuitive electronic panel is also quick and easy to operate, so pool ... Lo on hayward pool heater, Details ADD TO CART. Hayward Universal H-Series Heater, Low NOx, 250,000 BTU, Natural Gas, Cupro-Nickel Heat Exchanger - W3H250FDN. Part # W3H250FDN. 4.83. $3179.00 IN STOCK. BTU 250,000 BTU Heat Exchanger Cupro-Nickel Type Low NOx Ignition Electronic Manufacturer Hayward Heater Type Natural Gas. Details ADD TO …, This is usually in your home's main electrical panel. Flip the breaker for your pool heater to the "Off" position, wait a few seconds, then flip it back to the "On" position. Finally, power your heater back on using the power switch. After a successful reset, your heater should be functioning correctly., Answering a viewers request on how to add and program a newly installed heater to a Hayward OmniLogic Automation system., Step 2: Locate the inlet and outlet valves on your pool heater. These are typically labeled with “in” and “out” indicators. Step 3: Turn the valves to the closed position. This will stop the water flow through the pool heater. Step 4: Install a bypass pipe between the inlet and outlet pipes on the pool heater., I have a hayward h300 series heater with a lo pressure always on. I have replaced the pressure switch and cleaned - Answered by a verified Pool and Spa Expert. ... HI My Hayward Hseries pool heater shows a LO and stops working when it rains. My temp dropped from 92 to 80. ..., 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..., Jul 24, 2023 · When your Hayward pool heater flashes the ‘bo code’, it’s signaling that there’s an issue with the bypass operation. Here’s a strategic approach to get your heater back to optimal functionality. Reset the Heater: Turn off the heater and the circuit breaker for 30 seconds. Power up the system again to see if the ‘bo code’ persists. , Universal H-Series Natural Gas 400,000 BTU Low NOx. Hayward. SKU: W3H400FDN. The Universal H-Series is an energy efficient, high performance, installation adaptable commitment to the pool service professional. Add to Compare. Add to Export., The Universal H-Series Low NOx 150,000 BTU Natural gas heater, is environmentally friendly and complies with all current air quality emission standards. Read more. Ships within 1-3 business days. Free shipping. In Stock. $2,409.00. Qty: Add to Cart. Buy in monthly payments with Affirm on orders over $50., May 6, 2022 · 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. , This item: Hayward W3H150FDN Universal H-Series 150,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas $2,409.00 $ 2,409 . 00 Get it Apr 30 - May 6, Some of the most reviewed products in HAYWARD Pool Heaters are the HAYWARD Universal H-Series Propane Gas 150,000 BTU Low NOx Pool Heater with 5 reviews, and the HAYWARD Universal H-Series Natural Gas 400,000 BTU Low NOx Pool Heater with 4 reviews. Related Searches. 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! 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. , Step 1: Shut the power off and then take out all the screws from the display board. After taking off the whole board you’ll see that there is a lower panel on the other side. Take off the two screws and undo them. Step 2: You’ll see a ribbon cable. Take that off and then unscrew the underneath panel., NOTE: the maximum temperature set point is 104° F. 13. Hayward H400FDN | Universal H Series Troubleshooting Guide - Page 14. in bypass mode for external control. 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 3 seconds., HeatPro Series Heat Pump. Hayward. SKU: HP21405T. Our new HeatPro Series of Heat Pumps utilize industry-first microchannel technology to get your pool water to the perfect temperature. Add to Compare. Add to Export. Overview. Specifications., Hayward - Front Header Assembly. SKU: 614836. Details: FRONT HEADER ASS'Y. Availability: In Stock. $569.99. Add to Cart. Keep your pool equipment running strong with Hayward H-Series H250IDL2 - H400IDL2 Low NOx Pool Heater Parts., Hayward Pool heater LO error, 🤷‍♂️ 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., Turn the thermostat all the way up on the heat pump. These units are not compatible with 3 wire remotes. For 2 wire air switch installations remove the jumper between terminals 1 & 2 and replace it with the 2 wires from your switch. Set the thermostat on the heat pump to the desired temp. Wiring Diagram HPABG / HP380. , Hayward Pool Heater Troubleshooting: A Comprehensive Guide. If you own a swimming pool, chances are you've invested in a high-quality pool heater to keep the water temperature just right, especially during those chillier days or evenings. One of the popular choices amongst homeowners is the Hayward pool heater, revered for its durability and ..., 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, 150,000 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, Hayward Pool Product Registration. Register your Hayward equipment now to receive a 90 day extended warranty, expert advice, rebate offers & more!*. June 30, 2023 NOTICE: Any applicable warranty coverage for a product shall not commence prior to the delivery date of that product notwithstanding anything stated elsewhere to the contrary., Replacement Parts. Hayward Electric 5.5kW Spa Heater 240V. Replacement Parts. Hayward H-Series 100K BTU Heater Natural Gas. Replacement Parts. Hayward Universal ASME. H-Series 250K BTU Heater Propane. Replacement Parts. Hayward Universal ASME H-Series 400K BTU Heater Natural Gas., Swimming Pool Heater Hayward H250FD Owner's Manual. Pool and spa/hot tub heaters (16 pages) Heater Hayward H250FDN Service & Installation Manual ... may relate to water flow. Verify the pump is running & adequate water is flowing through heater. “LO” is NORMAL when the pump is turned off. Inspect water pressure switch Continuity test Step ..., Press and hold the "Up" and "Down" buttons simultaneously, according to the Stanley Louis Company. Hold the buttons until the indicator light rapidly flashes and the digital display shows the maximum temperature-lock setting. Typically, this is in the range of 90-degrees F. Release both buttons. Select the desired water temperature with the ..., 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., Pool Heat Pump (2) Refine by Product Type: Pool Heat Pump Heat Output 150,000 BTU (2) Refine by Heat Output: 150,000 BTU, From the Manufacturer. Hayward H400FDP Universal H-Series Low Nox Propane, Heater, 400,000 BTU. The Hayward Universal H-Series gas heater is the "universal" energy efficient remedy for any Newer existing pool or spa., Follow the included steps to place the heater in bypass mode for external control. Step 1. Press the 'MENU ICON' button to place the heater in 'STANDBY' mode. Step. The 'SPA' indicator should illuminate & the display should show the Max Temp set point. Step 2. Press and hold the minus & plus buttons for 3 seconds., Hayward H300FDN Universal H-Series Low Nox 300,000-BTU Natural Gas Pool Heater. Features: Universal, energy-efficient pool and spa heater; ... This is a replacement for our previous heater (also, a Hayward H-Series H400) that was 12 years old. WILLIAM. VS. Most helpful negative review., Apr 12, 2020 ... How to start/light a Hayward Universal H-Series heater at the control panel on the heater., Hayward W3H400FDP Universal H-Series, Low NOx, 400,000 BTU, Propane Gas, Pool and Spa Heater delivering durability, reliability, and energy efficiency. FREE Standard Shipping On Orders $100 Or More! My Account