Question about Hayward H Series Pool & Spa Heater 400k Btu Propane Gas Milivolt Ignition H400p1

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HEATER RUNS (HOT EXHAUST) WATER IS CURCULATING ( CAN FEEL AND HEAR) BUT WATER IS NOT WARM OR HOT ?

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As hot water leavs the heater it mixes with cold water so what you feel at the pool side is barley warmer than the pool. This is ment to keep from scalding people in the pool or spa. 7-11 degrees is the max on the outlet.

Posted on Apr 24, 2010

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Starite sr400lp runs fine ,no errors however water to pool is not hot or even barely warm


With heater running put your hand by the exhaust and see if the air being expelled is hot. It will be if heater is producing heat. Depending on the size of the pool this heater can take some time to heat the water.

May 11, 2014 | Pool & Spa

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Was not getting warm air in the cabin so i assumed it must be the thermostat, replaced it - still no heat, thought maybe from replacing thermo i may need to get any air that might be traped in the system....


On most cars (all that I know of) the heater works by directing the hot water from the engine through a small radiator in the cabin and blowing air across it with a fan. If you hear and feel the fan blowing air then it could be that the valve that diverts the hot water to the small radiator is bad and no hot water is being circulated thus no warm air. In order to fix that you would have to locate the valve and replace it- many times they are in hard to reach places.
hope this helps

Feb 25, 2011 | Cadillac Seville Cars & Trucks

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Water heater fires and runs for 2 or 3 minutes and then cuts off.It tries to refire 2 or three times but wont .Red light inside comes on as if it is out of gas.I changed the T-stat and ECO and it still...


First of all, lets see if water is hot already by releasing pressure relief valve slightly and seeing if water is already hot.BE CAREFUL NOT TO SCALD YOURSELF! Shut water pressure off, first, but be aware it will still be under pressure at first.. Just hold a cup, or something under it and open it up slightly, or at least feel pressure relief valve to see if it feels warm/hot to touch. May just be by-pass not set properly in back of water heater. Let me know if hot from pressure relief at outside on heater.

Dec 23, 2010 | RTO Atwood Water Heater - 6 Gal LP

2 Answers

Leaking Antifreeze, overheating and blowing cold air through vents when temp is set to warm


wow bro thats kind of vauge star lokking for leaks around common places radiator hose clamps water pump if visible ( no clue what car you have)

May 02, 2010 | 1999 Dodge Durango

1 Answer

My heater ignites and blows really hot exhaust


The water is mixed on the back side of the heater and will exit the heater at 7-11 degres hotter than it came in. This will keep people from being scalded at pool side. So what you have sounds normal.

Apr 05, 2010 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

I have replaced my electric water heater and I have checked everything I can think of and I still run out of hot water in 3 minutes. What on earth is the problem.


3 minutes?? does the water run cold then? or just warm?
Is this what the tank you replaced was doing? If so, then you may have: 1 a recirculating pump instant hot water system thats faulty and allowing cold water backflow into hot water piping. 2 A tempering valve that has stuck, allowing cold water into your hot water system.
Or maybe a broken or missing dip tube in your new heater.
If after 3 minutes the water is coming cold out leave that faucet running and go to heater and feel the hot water outlet pipe from the heater. if that pipe is hot then the heater is not the problem. If the hot pipe from the heater is cold the heater is the problem. (Make sure the cold pipe coming into the heater is connected to the Right side marked "cold" !) If there is a tempering valve by the heater: feel the output from the tempering valve, if it is cold and the pipe from the heater to the tempering valve is hot, then the tempering valve is the problem. If all these are OK somewhere in your plumbing system hot and cold may be connected possibly a faucet or showerhead that is shut off at the spout/head, but hot/cold handles are left turned on then cold water can backflow thru hot pipe.

Jan 18, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

HEATER


Check the coolant level.Feel the heater hoses going to the heater core to see if they are warm,or hot.If one of them is warm,or hot,and the other is not,remove the heater hoses,and flush the heater core out with a water hose.Bleed the coolant system,and you might want to install a new thermostat while you are at it.

Dec 10, 2009 | 2002 Ford Taurus

1 Answer

I have installed a 4 gallon inline water heater close to the bathroom. The main hot water heater is at the other end of the house. Now the hot water in the bathroom runs luke warm when the washing machine;...


you don't have a circulating line in it,, there for it is pulling the hot only,, when you have the 2 systems you have to have it circulationg or take 1 out, it being it is hot water they will vapor lock,, meening no hot water , you could get a circulating pump that actually hooks to the cold and hot side under the sink far away from the water heater and it has a timer on it that will circulate the water at certain times of the day,,, this would solve your problem

Jul 02, 2009 | Jacuzzi RapidHeat In-Line Heater U395000 [...

2 Answers

Heatercore does not get hot only one hose is hot


First make sure you have the radiator full of antifreeze also check overflow to make sure its at proper level . then let car warm up and feel hoses that go to firewall tword heater core and see if one of them are warm if so you have a blocked water control valve or its got a vacuum line off going to it .. Thanks Jerry holler if this is not it we will go from there.

Jan 29, 2009 | 1999 Ford Taurus

1 Answer

No hot air from heater, blower runs fine


The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.

Since you state the 2 things you ruled out, that leaves only the water pump. Is the car running hot? The thermostat may be sticking as well... but im leaning toward the pump.

Jan 21, 2009 | 1994 Cadillac DeVille

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