Lo on hayward pool heater

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 ...

Dec 2, 2021 · How 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. Fits hayward universal h-series low nox pool heater models h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, h250fdp; Also fits hayward universal h-series low nox pool heater models h300fdn, h300fdp, h350fdn, h350fdp, h400fdn, h400fdp; Weight 4.8 poundsThe Universal H-Series Natural Gas Heater is a premium heating experience from HAYWARD, designed to help you relax and take a load off while in the pool or spa. Highlights Heater provides reliable, long-lasting comfort for in-ground pools and spas with a surface area of up to 600 ft. where natural gas is availableTurn off the electricity and gas going to the pool heater. Open the faceplate of the heater, then locate the pronged ignitor. Remove the retaining bracket and screws, then disconnect the ignitor from the motherboard’s wires. Contact the manufacturer for a like-for-like ignitor part number, then attach it to the motherboard’s wires.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.Having a clean and balanced pool is the ultimate goal for every pool owner. One of the most popular and efficient ways to achieve this is by using a Hayward salt system. However, l...

Posted April 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 ...Turn off the electricity and gas going to the pool heater. Open the faceplate of the heater, then locate the pronged ignitor. Remove the retaining bracket and screws, then disconnect the ignitor from the motherboard’s wires. Contact the manufacturer for a like-for-like ignitor part number, then attach it to the motherboard’s wires.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.Hayward pool heat pump troubleshooting guide. If your heater does not operate or does not heat your pool water get technical support to repair common issues. Call Us Nationwide: 1-800-741-9956. West: 213-291-9276 Southwest: 214-764-8551 Midwest: 312-229-0026 Northeast: 631-223-7175 Southeast: 239-247-5878 or 954-866-1644. Trustpilot.Hayward Pool Heater Lo Code Mother-in-law just installed a heater for her pool, I've never worked on pools but have done my best to research with no avail. I don't believe we need to backwash the system because the pool and heater are both brand new. ... If it still doesn't work call Hayward cuz you could have a bad a pressure/flow sensor ...If you're looking for help fixing your Hayward Pool Heaters, look no further! Our comprehensive Hayward Pool Heaters error code guide will explain common iss... 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. Availability: In Stock. $129.99. Add to Cart. #16. Hayward - IDXMOD1930 Ignition Control Module for H-Series Above Ground Pool Heater. SKU: 615033. Details: Hayward IDXMOD1930 Ignition Control Module for H-Series H100ID1 and H100IDP1 Above Ground Pool Heaters. Availability: In Stock. $499.99.

Shop Hayward W3H250FDN Universal H-Series H250 Low NOx Pool Heater, 250,000 BTU, Natural Gas at Pool Supplies Superstore. The Superstore has all the Commercial Pool Heaters by Hayward to fit your pool supply needs!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.Hi, we have a Hayward ProHeat Heat Pump w/digital display, when the heater and goldline controls are set for temp above the current temp of the pool the heater comes on and runs for a minute or two, f … read moreNOTE: 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.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...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.

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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.Getting lo code on my Hayward pool heater Cleaned the cartridges tried to back wash. Still nothing, Hayward, I - Answered by a verified Pool and Spa Expert. ... I tried to turn on my Hayward H400 gas pool/spa heater and it wouldn't ignite, just made a loud buzzing/humming sound. I cleaned out the cartridge filters and afterwards it fired up as ...NEW Hayward Universal H-Series Low NOx heater combines industry-leading hydraulic performance; environmentally responsible low NOx emissions and a standard cupro nickel heat exchanger with a low profile appearance, lighter weight design, independent left or right side electric, water and gas connections plus 2" x 2 1/2" CPVC union connections ...Hayward Universal H-Series H350 Low NOx Pool Heater, 350,000 BTU, Natural Gas - EXPERT LINE NLA. Out of Stock. Only %1 left. Brand. Hayward. MPN. H350FDN. SKU. 4075. Product Overview. Hayward H-series Pool Heater provides an energy-efficient and environmentally responsible low NOx performance solution for pools and spas!

Follow these steps for a safe power down: Turn Off Power: Locate the power source and switch off the power supply to the heater. This step ensures safety during the disconnection process. Unplug and Label: Unplug all electrical connections from the heater, including power cords and control panels.Page 40 Heat Pump Pool / Spa Heater Owner's Manual Notes:... Page 41 Notes:... Page 42 1. Fill out the reverse side of this card. 2. Cut card along the edges and drop it in the mail to us. ALONG EDGES Hayward Pool Products 1 Hayward Industrial Drive Clemmons, NC 27012 ATTN: HEAT PUMP WARRANTY DEPT.Apr 12, 2020 ... How to start/light a Hayward Universal H-Series heater at the control panel on the heater.1. Locate the control panel. 2. Press the ‘Power’ button. 3. Set your desired temperature with the ‘Up’ and ‘Down’ buttons. 4. Press ‘Mode’ to activate the heating function. Pool Basics: How To Start/Light a Hayward H-Series Pool Heater.We are your source for Pool Heater Parts for Hayward H-Series Low NOx Induced Draft H250IDL. Use a digital Low NOx Induced Draft H-Series Hayward H250IDL parts list diagram and manual on our website for reference. Our inventory of H250IDL Hayward H-Series parts includes everything from controls to heat exchangers.In this way, 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.Hayward and Pentair Pool Heaters’s cupro heat exchanger is designed differently but has similar thermal efficiency (about 82%). Pentair EC462025 is designed for smaller water flows (up to 70 gpm), while Hayward W3H150FDN works perfectly up to 125 gpm. You can rotate a control panel in three directions on top of the Pentair EC462025 …Hayward is always looking for ways to make pool and spa ownership as simple and effortless as possible. The latest example of this is the new Universal H-Series pool and spa heater. Combining advanced technology with universal-fit flexibility, it's a smart choice for virtually any new installation or existing system upgrade delivering state of- the-industry performance, outstanding energy ...Hayward Heater Model H400FDNDisassemble and Re-AssembleHayward H-Series H400FD Heat Exchanger AssemblyRepair Heat Exchanger (Model FDXLHXA1400)400,000 BTU he...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. […]

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 …

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.Go Green with a little help from the sun. AquaSolar GL-235™ is America's best-selling entry level microprocessor based solar pool heating control system designed for easy and dependable operation. Enjoy automatic maximization of solar heat collection and reliable, accurate performance. AquaSolar GL-235 also includes a nocturnal cooling option.Hayward H200FDN pool heater stopped working during the couple of days of heavy rain late last week. There is power to it, can hear a buzzing inside. Changed the low voltage fuse, fan came on briefly.I have a new Hayward heater. I keep getting a lo code when the pool is turned off. This is a brand new heater and pool. My pool company that installed the pool told me to make sure I’m getting proper water flow in the system. But didn’t tell me how to do this. Do I do it on the Hayward...Find pool heaters at Lowe's today. Shop pool heaters and a variety of outdoors products online at Lowes.com. Skip to main content ... Hayward Nirvana Raypak VEVOR Liquid propane Natural gas Gas Electric Above-Ground Pools In-Ground Pools Salt Pools Digital Mechanical 0 13.9 14 16 21.5 25 25.25 26 26.6 28 28.25 30 30.5 31 44 48 0 15 16.33 17.7 ...Hayward Millivolt Natural Gas Pool Heater 210K BTU | Standing Pilot | H2101. H-Series MilliVolt. 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.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... I work in HVAC and was sent to a condo clubhouse to changeout a Fan in a Can that brings fresh air to the room with the Hayward Pool Heater. I wired the new FIC as the old one was and the new FIC was constantly running. I opened the controls area to the pool heater and found the red wires to the Vent Pressure switch were jumped together which ...Hayward W3H300FDN Universal H-Series Low NOx 300,000 BTU Natural Gas Residential Pool and Spa Heater with Bundle* Warranty Better Buy Pool Supply will provide you with the Full 2 Year Manufacturer's Warranty plus 1 Year Installation Warranty upon installation by our professionals. From the Manufacturer The Universal H-Series is an energy efficient, high performance, installation […]Hayward and Pentair Pool Heaters’s cupro heat exchanger is designed differently but has similar thermal efficiency (about 82%). Pentair EC462025 is designed for smaller water flows (up to 70 gpm), while …

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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.Dive in with a dealer near you. 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.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.Need full instructions for spring re-opening for 18,000 gallon 32 x 16 in ground vinyl pool with 3/4 hp 5210 Hayward filter. Water is already above the skimmer level. Thank you, XXXXX XXXXX been taugh …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:…PitschPlumbing. 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 to make enough pressure to make the switch. Open the front panel of the heater and look up in to the right. You will see a round part with 2 wires ...We have a 30,000 gallon salt pool with a Hayward model H400FDN pool heater. The water turns green and the vinyl liner and fiberglass stairs get badly stained. I'm told by 2 pool companies that the hea …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 …You need to put the heater in STANDBY Mode to get the bO code on the heater display. Press the mode button once to get the heater in STANDBY Mode. First, press and hold on to the Down key. Then, press and hold down the MODE key as well. You need to keep holding both keys for about three seconds. At this point, the “bO” message should appear ... ….

1. Locate the control panel. 2. Press the ‘Power’ button. 3. Set your desired temperature with the ‘Up’ and ‘Down’ buttons. 4. Press ‘Mode’ to activate the heating function. Pool Basics: How To Start/Light a Hayward H-Series Pool Heater.Hayward - Inground Pool Heater - Universal H-Series - Lo-Nox. Categories. Above Ground Pool Packages; Above Ground Pool Liners . Above Ground Pool Liner Accessories ; ... Lo-Nox - Inground Pool Heater Hayward. MSRP: $3,498.99 Your Price: $2,599.99 (You save $899.00 ) SKU: UPC: * Current Stock: Quantity: Decrease ...Best Selling. Hayward W3H250FDN Universal H-Series Natural Gas Pool Heater. (1) $3,179.00 New. Hayward HeatPro W3HP21404T 140,000BTU In Ground Heat Pump. $5,299.00 New. Hayward H-Series 135,000 BTU Above Ground Pool Heater - (W3H135FDP) $89.50 New. Hayward W3H400FDP Universal H-series Low NOX 400k BTU Pool and Spa Heater. Pomeade IDXL2DB1930 Display Board Replacement for Hayward Heater IDXL2DB1930 Display Board， Compatible with Hayward Universal H-Series Low Nox Induced Draft Heater, H400FDN HD150FDN dummy Hayward W3H150FDP Universal H-Series 150,000 BTU Propane Pool and Spa Heater for In-Ground Pools and Spas Clean the Filter. 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.Hayward H400FDP Pdf User Manuals. View online or download Hayward H400FDP Owner's Manual, Troubleshooting Manual ... POOL AND SPA/HOT TUB HEATERS. Brand: Hayward | Category: Heater ... LO" Code. 46. Pressure Switch Adjustment. 49. IF" Code. 52. AC" Code. 57. AO" Code. 58. Heat Exchanger: Flow Requirements. 61.My Hayward H100ID stopped heating the swimming pool water. I spent 3 afternoons and evenings of my free time pulling my hair out trying to figure out the pr...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.Below is the troubleshooting guide for Hayward pool heater error codes. Error codes show up on the digital screen of the H-Series H150, H200, H250, H300, H350, and H400 gas … Lo on hayward pool heater, FAQ: What are the Hayward pool heater lockout settings? The maximum lockout settings for the pool mode are 90ºF and 104ºF for the Spa mode by default., Pomeade IDXL2DB1930 Display Board Replacement for Hayward Heater IDXL2DB1930 Display Board， Compatible with Hayward Universal H-Series Low Nox Induced Draft Heater, H400FDN HD150FDN dummy Hayward W3H150FDP Universal H-Series 150,000 BTU Propane Pool and Spa Heater for In-Ground Pools and Spas, HeatPro In Ground Heat Pump, 140,000 BTUs, Square Platform. Hayward has an advanced lineup of gas heat and electric heat and heat+chill solutions to deliver the ultimate control of your water temperature., Also, is a heater that is not lo nox still safe to use. We are looking at the Raypak 156A Above Ground Pool and Spa Heater with Digital Controls Electronic Ignition in Natural Gas 150K BTU or the Pentair MasterTemp Low NOx Pool & Spa Heater – Dual Thermostat – Electronic Ignition – Natural Gas – 175,000 BTU ., Attach the manometer to the outlet/ manifold side of the gas valve. Make sure you turn the heater on (local gas cock and heater gas valve), along with all appliances attached to the same gas supply. The gas valve may need to be adjusted if the reading is low or high. All gas valves have an adjustment screw., Pool Heat Pump (2) Refine by Product Type: Pool Heat Pump Heat Output 150,000 BTU (2) Refine by Heat Output: 150,000 BTU, Hayward W3HP21104TC Pool Heat Pump - Lo Ambient - 110,000 BTU. Features & Benefits: 100% Titanium Heat Exchanger – Pressure tested, high energy & impervious to corrosion. Ultra Gold Evaporator Fins – Corrosion resistant which increases durability in harsh environments. Vinyl Coated Fan Guard – Protects against debris and the elements., Details ADD TO CART. Raypak RP2100 Digital Natural Gas Heater, 266,000 BTU, Cupro-Nickel Heat Exchanger - P-R266A-EN-X #51. Part # P-R266A-EN-X #51. 4.82. $3264.00 IN STOCK. BTU 266,000 BTU Heat Exchanger Cupro-Nickel Ignition Electronic Manufacturer Raypak Heater Type Natural Gas. Details ADD TO CART., Hayward H150FDN Pdf User Manuals. View online or download Hayward H150FDN Owner's Manual, Troubleshooting Manual ... Brand: Hayward | Category: Swimming Pool Heater | Size: 6.96 MB Table of Contents. Table of Contents. 2 ... LO" Code. 46. Pressure Switch Adjustment. 49. IF" Code. 52. AC" Code. 57. AO" Code. 58., 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 ..., Save money and energy with the MasterTemp High-Performance Heater. Already known as being dependable and efficient, MasterTemp now offers smart features and an optional energy-saving Smart Bypass Valve Kit to help you ensure your pool is ready whenever you are. Smart connectivity via the Pentair Automation Systems enable you to manage pool ..., Heater works great so far. But had to order Hayward FDXLFWP1930 FD Field Wiring Panel Replacement Kit for Hayward Universal H-Series Low Nox Pool Heater because the one inside the unit was damaged. My pool installer was not sure how a new piece of equipment could have this damaged, but the new part worked great ($53)., Hayward FDXLWPS1930 Water Pressure Switch Replacement for Hayward Universal H-Series Low Nox Pool Heater,Black 4.7 out of 5 stars 392 10 offers from $37.38, typically I will push the spa button which turns the valve actuator to the spa position, once the pump is running I push the heater button on the main control board once I do that the blower turns on then the gas smell is present, then the igniter lights the gas and starts the heater., PitschPlumbing. 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 to make enough pressure to make the switch. Open the front panel of the heater and look up in to the right. You will see a round part with 2 wires ..., Fits hayward universal h-series low nox pool heater models h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, h250fdp ; Also fits hayward universal h-series low nox pool heater models h300fdn, h300fdp, h350fdn, h350fdp, h400fdn, h400fdp ; Weight 5.9 pounds ; Customer ratings by feature . Easy to install . 4.4 4.4 ., Compatible Replacement for: Hayward H-Series ed2 Pool Heaters, Hayward H-Series LoNox models h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, h250fdp, h300fdn, h300fdp, h350fdn, h350fdp, h400fdn, h400fdp ; Manufactured by Optimum Pool Technologies ; NOTE: This is a compatible aftermarket replacement part. The manufacturers' names and part numbers ..., 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, 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., Heater works great so far. But had to order Hayward FDXLFWP1930 FD Field Wiring Panel Replacement Kit for Hayward Universal H-Series Low Nox Pool Heater because the one inside the unit was damaged. My pool installer was not sure how a new piece of equipment could have this damaged, but the new part worked great ($53)., 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 …, Factory original Hayward part. For H300FD Series Heaters. Hayward part number UHXPOSHZ13001. Learn More. Add to Cart. Wishlist. Compare. Hayward CHXGEN1930 Pilot Generator - Comfortzone / Heatmaster HM2. $88.99., Compare the 5 top natural gas pool heaters features, reviews and costs. ... Hayward Universal H-Series 150,000 BTU Pool and Spa Heater, Natural Gas: 4.1: Very good : Excellent : Good:, 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. , HeatPro In Ground Heat Pump, 140,000 BTUs, Square Platform. Hayward has an advanced lineup of gas heat and electric heat and heat+chill solutions to deliver the ultimate control of your water temperature., Follow these steps for a safe power down: Turn Off Power: Locate the power source and switch off the power supply to the heater. This step ensures safety during the disconnection process. Unplug and Label: Unplug all electrical connections from the heater, including power cords and control panels., 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., Hayward Pool & Spa Heaters. 4 RESULTS. Hayward Universal H-Series Low NOx Induced Draft Residential Pool & Spa Heaters. Hayward Universal HC-Series Dual Fuel Technology Pool & Spa Heaters. Hayward H-Series Cupro-Nickel Heat Exchanger Above Ground Pool & Spa Heaters. Hayward Heater Tops & Vents for Indoor or Outdoor Use., The Waldorf Astoria Los Cabos Pedregal is one of Mexico's best luxury hotels, right on the rugged coast of Baja California, with gourmet restaurants, an elegant spa and beautiful p..., 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., 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 & Power, Long time lurker, first time poster. I had a brand spanking new H500fd heater installed this past fall by the local pool company. They wouldn't touch the electric or gas so it just sat in the pool equipment room all winter waiting for the weather to turn nicer., Hayward H300FDN. I replaced the pressure switch but still getting a LO signal and heater won't start ... I have a H series Hayward pool heater and it will not ignite. this is an electronic ignition. I get an AO code on the led have replace the vacuum blower switch and get the same problem. ...