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There are lots of elements — including, amusingly, the element — that go into making a hot tub, well, hot. But we don’t call that collection of spa parts a “warm tub,” and for good reason: we like the heat.
If your heat isn’t hot enough — or there’s too much of a good thing — here’s a few places to look for a solution.
Elements. First, the good news, since we brought it up: if it’s too hot, your problem is certainly not the element, and if it’s too cold, it’s almost certainly not the culprit. If you’ve eliminated everything else (see below), there’s a possibility of damage to the heating element which can be checked with an ohm meter (unplug everything!) which should measure around 10 ohms across the element’s terminals. Much less than that means it’s probably a goner.
Hi-limit switch. This is simply a temperature sensor that shuts things down when it believes the water’s getting too hot. If it’s going off prematurely, it’s either mistaken about the temperature (something you can check with another thermometer, and replace if necessary), or there’s something else going on, like blocked flow somewhere, that increases the temperature around the sensor. It’s never a bad idea to start with the simplest solution; see if there are leaves or other debris clogging the impeller or other parts of your flow scheme.
Thermostat. Again, simplest first: if it’s too cold, try turning up your thermostat. Too hot? Try the other direction. If it’s not that simple, there’s the possibility the thermostat has lost pressure on the little freon tube it uses to guage heat — it looks like a thick copper wire, and can get corroded and leak. If a visual inspection suggests corrosion, the thermostat might need to be replaced.
Remember, you don’t have to be an expert on everything; if you need help troubleshooting, please contact us today and we’ll help you with the information and spa parts you need to get back in the water!