Jacuzzi Quantum not heating properly


Old 08-15-15, 04:36 PM
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Jacuzzi Quantum not heating properly

I have a Jacuzzi Quantum Hot Tub, Model #: 7700000. The piping is all flowing properly, but there is a problem with the heater. When I turn the hot tub on, the jets come on, but the little light on the temperature select knob doesn't come on. The heater is not turning on when "HEAT" is selected. If I manually press the heater relay on the control panel, the heater turns on and heats the water up, but as soon as I let go of the relay, the heater turns back off again. I don't know how to check the voltages of different parts to see what is working and what isn't working. I am an automotive mechanic, so if I know what the readings are supposed to be, I can find the problem before throwing parts at it. Any help is greatly appreciated. Thank you very much.
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Old 08-16-15, 01:09 PM
PJmax's Avatar
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Join Date: Oct 2012
Location: Northern NJ - USA
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Welcome to the forums.

I need more info.
Year of manufacturer.
Is there a control box inside with model or type number on it ?
I'm thinking a defective temperature sensor or pressure switch.

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