Question about Jacuzzi RapidHeat In-Line Heater U395000 [ Bathtubs and Whirlpools,

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Rapid Heat Inline Heater doesn't work

Our rapid heat inline heater U394000 does not always come on and when it does it shuts off after a couple minutes and the reset button doesn't reset it.

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Posted on Jan 02, 2017

PartsCenter
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SOURCE: Rapid Heat Bath Heater - indicator light on but not heating water

Bathtub heaters will not produce the heat out a the jets like you would feel coming out of a return jet in a swimming pool.
Bathtub heaters will ONLY maintain whatever temperature water you put in there. they only heat 1-2 degrees an hour. that is for a 1500 watt heater. Many heaters today are only 650 watt or perhaps 700 watt.

Posted on Feb 24, 2009

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SOURCE: I have an older Jacuzzi

I have the same problem. I talked to Jacuzzi technical support and they said that they don't sell a product that will retrofit (they make the couplings a custom size to prevent this.) It's really a drag since I really don't want to install a whole new tub just to maintain water temperature. I haven't given up so if you found a solution please post.

Posted on Apr 15, 2011

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1 Answer

Can Jacuzzi Rapid Heat inline heater be installed upside down?


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Rod
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888-521-6183

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I have an older Jacuzzi with 4 corner spa jets. There is no inline heater in it. Since it takes about 180 gallons of water to fill it I would like to add an inline heater so that the heat can be maintained...


I have the same problem. I talked to Jacuzzi technical support and they said that they don't sell a product that will retrofit (they make the couplings a custom size to prevent this.) It's really a drag since I really don't want to install a whole new tub just to maintain water temperature. I haven't given up so if you found a solution please post.

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1 Answer

Rapid Heat Bath Heater - indicator light on but not heating water


Bathtub heaters will not produce the heat out a the jets like you would feel coming out of a return jet in a swimming pool.
Bathtub heaters will ONLY maintain whatever temperature water you put in there. they only heat 1-2 degrees an hour. that is for a 1500 watt heater. Many heaters today are only 650 watt or perhaps 700 watt.

Feb 21, 2009 | Jacuzzi RapidHeat In-Line Heater U395000 [...

1 Answer

2000 F250 super duty v10 engine. no heat. coolant changed. fuses, thermostat are ok. temp gauge operates normally. both heater core hoses are warm but still no heat in cab.


check the vaccum hoses on the passenger side under hood. I think that there are two hoses but it might be three. they get brittle and leak. but they move a little valve that you can move yourself just to see if heat works then. it is inline with the heater hoses I think. Bear with me though because it has been about 3-4 years ago when I figured this one out. it is definately a vaccum problem. there is also a set of vaccum hoses under passenger side of dash, several colors in it. might want to look there because sometimes kicked by peoples feet but money is on the ones inline with heater core. just move linkage and see if it gets hot air. Hope I helped and didnt confuse.

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