When my heater is and heats up, after 5 or 10 min., it begins making a banging sound. It is an H400. Can you advise why this happening?
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If you have an external by-pass it needs to be closed. This will be a valve between the pipes in and out of the heater. When you close it, it forces water through the heater. When it is open no water goes through the heater. So the water in the heater boils and turns to steam. With no where to go it starts banging and jumping.If you close this valve or it is closed and you still have trouble the internal by-pass has gone bad. The overheating from the first problem will often cause this. You remove the water header from the side of the heater and pull the pipes from it. In reality you will probably have to pull the gas pipe so you can move the heater from the pipes. You will find the assembly inside the manifold. It will probably come out in pieces but the new one goes back in as a unit. This will regulate your water flow and keep it heating at a constant temp.
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Will this blower work with a H250IDL?
This will fit that heater, please make sure your current blower voltage is 220V
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Yes, that is the correct Combustion Blower H-series Low Nox 240V - IDXLBWR1930.
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This looks similar to a blower assembly for a Laars/Jandy LT400 heater (R0329800). Do you know if it will fit?
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Hello Jason, the Hayward would not replace the Blower Assembly (r0329800) Discontinued by the Manufacturer.
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Is this the correct blower for an old Hayward H400IDL?
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Hi David, yes, the Combustion Blower H-series Low Nox 240V - IDXLBWR1930 is the correct blower for your Hayward H-Series Low NOx - IDL2 heater.
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H400IDL, not IDL2. The old blower didn't have a capacitor on the side.
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The IDLBWR1930 is the part number to the blower for the heater model H400IDL. The part number is obsolete without a replacement. Hayward Universal H-Series LowNox https://www.inyopools.com/productlisting/heaters_hayward_lownox.aspx
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