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mschmitz57

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  1. Hot tub is up to temperature. In the nick of time. 40's outside.
  2. I found the problem. I was checking the thermistor resistance and found that I had the connector offset by 1 pin. In other words only 1 pin was contacting the motherboard. I had disconnected it when I replaced the heater and re-connected it improperly. The thermistor never registered a rise in water temp so the motherboard shut-down the heater. Will check back later to verity the water is actually getting hot. Thanks, Mark
  3. Update. The heater resistance is around 8.5 ohms. I just noticed that when I reset the power, the heater LED comes on for about 10 seconds. Then I hear a relay "click" and the heater LED goes out. Yes the thermistors are original. Is there any way to check them? Will try replacing them first. Mark
  4. I have a 10 year old Hot Springs Prodigy that quit heating. This spa had an older style trumpet heater so I installed a new style replacement heater. This was advertised as a Watkins but It looks like a reproduction model. The price was $209 so I figured I'd keep it and take my chances. The quality looked decent. After replacing it I restored the power and felt the heater was warm so I left it heat-up overnight. The next morning the water was cold. After a bit of investigation I decided my circulator pump was bad so I replaced that as well. Now I can see a nice vigorous plume of water coming-up from the outlet in the bottom of the spa as well as the little outlet hole in the filter compartment. I did not have this before I replaced the pump. I restored the power but the heater never got warm. I noticed the little green reset button was tripped so I reset it. Still no heat. Today I measured 115 VAC on the heater relay board. Also measured 115VAC on the circulator pump leads on the motherboard. The red heater LED is not on. The heater reset button is not tripped. I'm afraid my new heater bit the dust. At this point I'm going to try checking the heater with an ohm meter. Does anyone know what value I should see on this? Thanks for any advice. Mark
  5. The tubing is just hard and discolored from age. Snip off half an inch then use a heat gun to gently warm the end until it becomes pliable again. Then reattach with the clamp. You did remember to replace the thermistor O-rings right? Mark
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