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JACKVJR

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  1. Caldera Kauai, This one just gets curiouser and curiouser! The heater had been unreliable for some time, but rebooting the power usually kicked it on. For the first time, repeated rebooting would not get the heater to begin working. I used a multi-meter and read 120 volts at each of the two heater terminals. OK, got power to it, but feeling the outside with the hand, no heat; feeling the water coming out, no heat. So this means the heater element is faulty, correct?. Order a new heater. While waiting for it to arrive, I removed the heater so as to be ready. Just to try to determine what had failed, I bench-tested it by applying 120 volts to each terminal. Without water in the tube, the heating element got red hot in seconds. What am I missing here? jack vines
  2. This one just gets curiouser and curiouser! For the first time, repeated rebooting would not get the heater to begin working. I used a multi-meter and read 120 volts at each of the two heater terminals. OK, got power to it, but feeling the outside with the hand, no heat; feeling the water coming out, no heat. So this means the heater element is faulty, correct?. Order a new element. While waiting for it to arrive, I removed the heater so as to be ready. Just to try to determine what had failed, I bench-tested it by applying 120 volts to each terminal. Without water in the tube, the heating element got red hot in seconds. What am I missing here? jack vines
  3. Still trying to understand how a closed loop circulating hot water and monitoring the temperature is affected by outside temperature. As I understand it, the sensors are all internal. jack vines
  4. Yes, new hot tubs are among the most overpriced of consumer products. As you suggest, there's really not much there. One advantage new tubs can have is their insulation and covers have improved over time. Yes, we got a great deal on an older used but good quality hot tub. With some help from a neighbor with a trailer and large relatives, moving it went quickly and economically. No, the reason it was so cheap is there's a gremlin in the temperature controls. It will hold 106 for weeks, then won't hold temp for weeks. Rebooted, it usually comes up to temp, but once the heater shuts off, it won't restart, until sometimes, it does. Because the fault is intermittent, it doesn't stay dead and make itself easy to circuit test. I've followed every troubleshooting suggestion here, but found nothing. Replacing the entire heating and control system will take the bargain out of it. Your results may differ. jack vines
  5. Well, I jinxed myself by reporting the problem had gone away. As soon as the outside temperature dropped below freezing, the spa temperature no longer holds steady. What is this telling us? Yes, the heater has to work longer and more often when the outside temperature is lower, but it was reaching 106 and holding steady for months, until yesterday. Nothing changed other than the temperature dropping to 29 degrees over night and not going above 32 during the day. jack vines
  6. Just an update; for the past six months, it's decided to hold a steady 106 degrees. Not only that, the leak has slowed and we no longer have to add water very often. A possible explanation is it just took a few months of continuous use and a couple of filter changes,to get all the crud out and the system accustomed to working again. No guarantees on a ten-year-old system. FWIW, our son and DIL had to have control boards replaced on a two-year-old spa. The tech said, "Set it and leave it alone. Whatever you think you're saving by turning the temp up/down/on/off, you'll end up paying in repairs. jack vines
  7. I guess it's possible to learn to live with a spa which doesn't reliably hold temperature, but it would be We're living with the problem, but it's work. I've tested everything recommended to me and none of them seem to be in failure mode.
  8. JACKVJR

    Filtration motor rus non stop.

    There are usually two motors and pumps. The smaller heater motor and pump usually runs constantly. The larger jet pump usually runs on command. jack vines
  9. JACKVJR

    Caldera Kauai Spa

    X2 - if the heater circulating pump is not running, it's dead or there's a serious control issue. However, you say "pumps". The Kauai only has two and the jet pump is NOT supposed to run all the time. jack vines
  10. Greetings, We have a 2005 Caldera Kauai and enjoy it every night. One of the best features of the older models is the +1UT and +2UT functions. This means they can maintain 105 degrees or 106 degrees. We feel the difference and would not like to lose the ability to choose those temps. Having said this, we're having some issues with the unit holding constant temperature Sometimes it drifts down.. One suggestion was it may be a heater relay control board problem. We'd spend the money for a replacement in a minute, but are concerned any new control board may have the safety nazi 104 limit built in. Does anyone have any experience with this and can speak from experience? jack vines
  11. These rolling, random problems are not fun to diagnose. For two days, it held at 105 degrees and then POOF,; it drifted down and for the first time ever, rebooting wouldn't get it heating again. I spent a day doing all the testing and troubleshooting without finding any definitely failed parts. Reassembled everything and POOF, the three days so far, it's holding 106 degrees. Dave, I'm going to ask for a favor to help me understand the control logic and what does/affects what. Please correct any misunderstandings I've gotten: 1. Turn on the spa. Temp is below set point. A low limit switch checks the pump pressure and if the pressure switch says OK, it starts the heater. 2. When the water temp gets to the set point, an upper limit switch turns off the heater. 3. Should the upper limit switch fail, there's a 115(?) degree over temp/safety switch. If this is triggered, does it always shut down the system and wait for a repair or reboot? 4. Since my temp never goes beyond 106, why does the control system sometimes shut down and require a reboot, but function as it should other times? 5. Even more confusing, once, when we were gone, I set the temp at 80 degrees, where there should have been no possibility of triggering the over-temp switch, and it failed to hold 80 degrees. 6. Now, rebooting doesn't trigger a normal sequence. New filter, heater circulating pump feels strong. Pressure switch is working. Am not getting 220v across the two heater terminals. Does this indicate a failed heater relay circuit board? If I jump 220v to the two heater terminals, would it begin to heat? Does the exterior of the stainless pipe begin to feel warm? 7. Should I just replace the pressure switch and the high limit switch as normal wear parts? Anything else while I'm in there? From whom would you recommend ordering Caldera/Hot Springs/Watkins parts? Thanks in advance. jack vines
  12. Hi, Dave, Thanks for the suggestion and I'll order the part to have on hand as soon as the outside temps get conducive to lying on the ground. jack
  13. Always a mistake to assume because two things happen at the same time that they are related. For a couple of weeks we had mild temps in the 40s and the spa would hold between 103-105 degrees. However, since the outside temperature has dropped into the single digits, the spa will no hold temperature at all. It loses a degree an hour until it is rebooted; then it immediately heats up to 105 within an hour or two. When the temperature reaches 105, the heater shuts off and will not restart without a reboot. What about colder outside temperature would prevent the heater from holding temperature? jack vines
  14. One and then the other. Our hot water heater uses soft water, so fill half soft, half hard. Anyone see a problem with that? jack vines
  15. As mentioned, an intermittent malfunction is frustrating. After holding near 105 for a couple of weeks, the temp drifted down to 98. A reboot brought it back to 105, but still no diagnosis. jack vines
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