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Softub (Assuming 220 Series) To Hot


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Hello,

I purchased a used Softub recently and I noticed that no matter what setting the tub is at, if I leave the cover on, it maxs out my thermostat in the tub over 120. It was at a setting of 2 and I went out of town and came back to find it like that. Its been happening alot lately, if I do not turn the dial off and leave the cover off it is unusable for a couple of hours. It seems to be an older model, a dial for heat setting ranging off to 10, and 2 push buttons (jets, and reset). It has not tripped the GFI cord end or the breaker inside the house at all.

Any help is greatly appreciated.

Thank you.

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That has a mechanical thermostat, which can fail with age. (can't we all?)

When one of those units does go bad, it turns into a simple switch: on and it will run forever, off and it will never come on - all regardless of the water temperature.

Easy to check - find and mark the place on the temp dial where the thing clicks on and off. Then shut off power and let the water cool. A lot. Then power it back up and see if the place the click happens is still at the same place on the dial - or if it has moved down the scale a bit. Same place = bad T-Stat.

HTH

B)

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Thanks for the response Chas, I will look into replacing the thermostat, i been watching it for the last couple of days and I left it on just a hair above the off position and it kicked in to jet and heat up the tub and left it, noticed it still goes to about 110~ before it will auto shut off for a bit. Any recomendations where to purchase replacement parts?

Also today when I came home I took the cover off and there was no power what so ever. Checked thermometer in pool and its at 115, I turned the surge protector strip (like you use for computers) back on and went to turn just the jets on and it sounds like the pump is trying to turn on but nothing comes out of any jets. Hums for 5 seconds and then trips the surge protector back off. I left the cover off to see if cooling it down would make any changes but it has never done anything like this to me before (only owned for approx month though). Any suggestions?

Thanks again

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Sounds like two problems! Bummer. The thermostat is available from any of the spa part on line retailers - you should take the old one out and get all the specs - the length of the capillary and the size of the capillary. Other than that they are all very much alike.

As to the motor humming and shutting off - if the thing got that hot it might be just the thermal overload. You may have to drain out some water and add some tap water to cool things off quickly, but the motor may be so hot (keep in mind that the jet pump is the source of heat in your tub: it is wrapped with a heat exchanger so if the tub got to 115 can you imagine how hot the motor got?) that it will take overnight to really cool off.

BUT - the fact that it is tripping breakers does not give me much hope for an easy fix, sorry.

Good news (sorta): you have to take the motor unit apart to replace either the thermostat, or motor, or both.

HTH

B)

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Well - I drained the tub andI took the unit apart (much easier then I expected!) took the front cover off (called a "wet pump"?) and found a string kind of jammed and wrapped around . I removed the string and started to reassemble the unit, I couldnt help notice a copper pipe just dangling underneath the heat exchanger, I have no idea where it belongs so I left it the way I found it. I filled the tub up just to the plastic intake and plugged in the unit and now the jets are constantly on and heating is lit up. Assuming that is still my thermostat ? but the dial is all the way off...

Just curious if anyone ran into this issue.

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