@1990 jacuzzi hot tub used maybe used ten time's then heater coil went and it sat empty for @ 12 years. It was my parents hot tub they gave it to me ,I replaced the heater coil with new one rated for the hot tub wired at 220 volt per instruction worked great for about 20 time's and three months and now no heat.It is a all maunal control system the heater has a trip switch but it is not tripped the heat is controled by turn knob and the heat light comes on and I heat a click the filter is new and no obstruction to the intake. I really dont want to purchase a new heater if all I get out of the heater is a few months
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Re: Jaccuzi hot tub will not heat?
Sounds like it maybe the heater again. Have you pulled it out and checked the ohms? it should be at least 10.5 ohms it could be the thermostat or the pressure switch - if either of those are not working it will not heat either.
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make sure the heating element isnt touching the casing inside the heating tube. if its an indoor tub, make sure the filtration cycles are not set to constant. constant filter cycles on an indoor tub will generate residual heat from the circ pump running 24/7, causing tub to heat past 104 degrees
Sounds like the heating element has gone out again. Once you reset the circuit breaker and the tub turns on it will start to circulate the water. This usually runs like this for about 2 mins and then the tub will recognize it is cold and send power to the heater. If the element is back at that point it will blow the circuit breaker. If this circuit breaker pops as soon as you turn it on then you most likely have a bad circuit board.
ok so when the pump is on high and the heater is running it doesent trip? you didnt say if it did. undo the heater leads so the pump is isolated completely. run the pump on the control centers gfci and see if it trips. if it does then try wiring directly - with an extension cord to a plug with a gfci in your house and see if it trips the gfci in your bathroom. if no trip inside house then bypass tubs gfci and run it with heater and pump through your bathroom gfci. if no trip then try and replace the tubs gfci, it gets pretty humid in the control center and gfci's have a semiconductor which which do fail after years of rough duty like that. if it trips the gfci in your house with the heater again it has a cracked heater element. craigslist always has old hot tubs and parts. you might have to buy a whole used old hot tub but that may be cheaper than a new heater box.
Is the equipment to heat and filter the hot tub separate from the pool equipment or do both bodies of water share a common heater and filter pump? In most cases they share a pump and heater with valves that direct the flow of water depending on how the pool owner wants to use the pools. The first thing you need to determine then is if the equipment is working properly. Is there flow of water to and from the spa? If so, is the heater burner kicking on? If it is running, is it running properly with sufficient gas pressure, 3-4" tall bright blue flames and stays on continuously during the heating cycle for the spa? What is 'very quickly' for the time to heat the water? In other words, if everything appears to be operating normally but the water is not warming fast enough or at all how much time is elapsing before deciding the heater is not working? How old is this equipment and how much experience do you have with this pool tech or the company they are from?
Is it greasy, oily spider web type junk? Coming through the pipes, new construction or new tub? Could be from the pump, not that it is leaking oil but it has oil in it from the manufacture of it. I would call the jacuzzi people and tell them what you have and that your kids play in the tub and drink the stuff, ought to get them to move on that one. Ask them if they know what it is and what to do about it? Hope this helps.
Depending on how you heat the hot water, whether gas or electric, is a missing detail in your problem, but if it is electric then your problem is the size, being only 40 gal, and needing probably about that to fill the tub, will always lead to your current position.
If the hot water heater is gas, the chances of it keeping up are slightly better, but again things like the temperature of the water leaving the tank, any mixing valves, etc. will effect the water temp at your tub. Before raising any temps, make sure you follow local code, as not to scald yourself or others.