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QCA Malta 175BD model which I believe same as the Mystic. Stopped heating giving me Sn error code alternating with current temp which has dropped to 78 so it is not a temporary condition.

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6ya6ya
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Posted on Jan 02, 2017

jumptrout51
  • 3361 Answers

SOURCE: Temp set for 78, fan continues to run, this am temps were at 64

You should replace your thermostat.

Posted on Sep 17, 2009

Coastsider
  • 331 Answers

SOURCE: mystic hot tub doesn't stay hot enough

Is your spa wired for 110Volt or 220V?

Posted on Apr 14, 2010

Coastsider
  • 331 Answers

SOURCE: THE ERROR CODE READS SN.

Did you replace both temp sensors or just one? Did you make sure that the new sensors are the same model? If you did replace both sensors with the correct ones, the main board is bad and will have to be repaired or replaced. The actual manufacturer of your controller can provide limited technical support for someone who has the ability to use a multi-meter and test a few components at the spa over the phone.

Posted on Sep 08, 2010

adamh294
  • 310 Answers

SOURCE: QCA Dream Series, Mystic SPA.

After refiling a spa, typicall the water is below 50 degrees F. Spas have a freeze protection in their programming so that when the water is that cold, the pumps run constantly to keep it from freezing. It will correct itself

Posted on Oct 28, 2010

  • 1 Answer

SOURCE: Kelvinator Dish Washer Model KD14SS

mine is doing the same what can it be

Posted on Mar 05, 2011

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Hello, and thanks for the question. Your error code is actually "SN" not "5N" but they are sometimes difficult to discern on the LCD topside display. The SN error code is for a Non-functional High temperature sensor which automatically kicks the heater off and trips the breaker. You can purchase new sensors for $75-$85 (it could be more, my pricing index is quite a few years out of date) I'm not sure where the sensor is located in that particular tub, although it is most likely in the heating canister. Make sure the power is off at the breaker before attempting any tub repair. if you have shut-off valves to the heating canister you may not have to drain the tub, remove the heating can and replace the sensor you will have to plug/unplug the sensors from the power pack/circuit board. I hope this helps =)

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Heat pump?


There could be several issues at work here.


  • First, is the heat indicator light showing on the topside?
  • Is the pump running but temp is not rising?
  • Any error codes displayed on the topside panel?

The drop in water temperature could be caused by a faulty temp sensor or faulty high limit sensor.

Check those items out and see what you come up with.

Rod
US Parts Center
888-521-6183

Mar 14, 2013 | Pool & Spa

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This sounds like your motor is going out. When they get noisy and run really hot is when they go out

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OH is the overheat code.

Your spa temperature is set above 108, or your thermostat is faulty & not reading correctly.

Jan 23, 2012 | Qca Spas Jewel Series Topaz Plus Hot Tub

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Our hot tub will not heat. It is staying around 84-86 degrees. Electric outlets/ panels are fine. Could it be a thermostat? A local dealer told us to see if the setting was changed to the "saver"...


If a spa is not heating, switch it into standard mode to begin with. Set the 2 filter cycles for at least 2-3 hours each and about 12 hours apart for optimum performance. QCA Spas uses a Balboa spa pack so the controls are very nice (I believe it is an ML900 control panel) and you can set everything from the topside control. Download the Paradise manual here: http://discounthottubspas.com/qca-spas-parts/
As always, their support team is great, so if you have questions, give them a call.

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After refiling a spa, typicall the water is below 50 degrees F. Spas have a freeze protection in their programming so that when the water is that cold, the pumps run constantly to keep it from freezing. It will correct itself

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This is a problem in your board or something is jumping the safety circut. You should have someone look at this to be sure that no other problems have come from this. Good luck.

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The tub experienced an overheat situation. This may be due to leaving the t stat turned all the way up and not monitoring or the hi-limit sensor is defective. The hi-limit sensor will shut down the heating cicuit if temp gets above 105 D optimally.the fact that the heater light is on is a good sign that things are working at this point.Whether or not a suitable temp(100-103 D) will be arrived at is to be seen. If spa heat kicks off before set temp is reached then replace hi-limit sensor.

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