Is this product what is called a water pressure switch.? ais it for a Hayward Mdl#h400idl2?
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Yes this would be considered a water pressure switch to some. Also it is the correct replacement for your heater.
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Wiil this part keep the hearted from starting up?
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Yes a bad pressure switch would prevent the heater from starting. Other common problems which would casuse the heater not to start up would be a dirty filter or a dirty pump basket so you may want to check these as well.
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my heater will pop and shoot warm burst of water then a cold blast of water. is this a bad pressure switch?
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Bob, Your problem could be more than a bad pressure switch, I would recommend calling Hayward at 908.355.7995 or have a Service Tech take a look at your unit.
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Range of pressure switch is .5 to 5. What is correct setting for a 2 pump, 365 gallon spa?
Thanks
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Hi, David. The setting will be based on the flow rate of the pump. The adjustment will have to be made as the pump is running.
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My hayward H series heater will turn on for 2-3 seconds then turn off .I back washed several times clean pool filters ,cleaned connections.to no avail.
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Hi, Edward. I would recommend that you check and test all the safeties include the water pressure switch. If those are good, check the gas valve.
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