Question about Dream Maker Spas Dream Maker Ez Spa Hot Tub

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THE ERROR CODE READS SN. (NON FUNCTIONAL HIGH TEMP SENSOR) THE TEMP SENSOR HAS BEEN CHANGED. STILL READS SN. I HAVE TRIED UNPLUGGING AND REPLUGGING. BUT NO RESPONSE. WHAT ELSE COULD I TRY?

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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

  • Jim N Dec 14, 2011

    I had the same problem after draining the tub last spring and refilling today.I drained a gallon or so and then hit the reset on the poer plug and it started right up. Got the idea from this site. Thanks!

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My side by side on the temp door reads 5y CE. I unplug and replug and it is ok for awhile


Thank you for your question, Friend.

Typically error code SY CE, is commonly referred to an issue between the main control board and the user interface (the control on the Freezer door). A tech would typically check the communication wiring wires between both parts to determine the cause of the error code. If the wiring is correct, then more than likely you are looking at a faulty main control board or user interface. Regrettably, this is not a simple DIY job. I would highly recommend reaching out to an expert technician to ensure the appropriate replacement part is ordered and is installed correctly to prevent future issues. I hope this information helps to some degree - thanks for your question, and please do not hesitate to reconnect. - Z

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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 You can purchase new sensors for $75-$85 (it could be more, my pricing index is quite a few years out of date) I'm not sure where the sensor is located in that particular tub, although it is most likely in the heating canister.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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Hello my check engine light is on i went to local parts house had them read the code low input voltage in the iat sensor so i bought a new one had the code cleared and before i left parking lot light was...


Keep in mind that the IAT (intake air temperature) sensor simply measures the temperature of air that is entering the engine. Intake air temperature is important because the higher the intake air, the higher the combustion temperatures. High combustion temperatures result in increased Nox (Nitrogen oxides) emissions. To keep these higher temps from causing increased combustion temps, the intake air tubing should be intact, allowing the engine to "breathe" air that isn't sampled from the engine compartment. The IAT measures air temp by using a thermistor, or a thermometer of sorts. The thermistor is supplied 5 volts reference voltage from the PCM (powertrain control module) and a ground. Usually, when the air temperature is cold the resistance in the thermistor is high and when the air temperature is warmer, the resistance decreases. This change in resistance changes the 5 V reference from the PCM, thereby informing the PCM of the temperature of incoming air. If the PCM notices that the incoming air temp is unusually high, say, 300 degrees, when the engine temp is still relatively low, it will set a P0112.

Symptoms: There may be no noticeable symptoms of a P0112 code other than an MIL (Malfunction Indicator Lamp). However, a emissions test may reveal higher Nox readings depending on the type of IAT failure. Or the engine may ping under load, depending on the type of IAT failure.

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Possible Solutions:
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Contact Balboa's Customer support department directly at 800-645-3201, follow the prompts to customer tech support (or press 0 and ask for customer support). You will need to be at the spa, control panel open and ready to read off the chip number, and you will need to be proficient with a test meter (AC voltage). The SN error is related to a bad sensor(s), but can also indicate a failed board. An incorrect sensor set will also create this problem, so confirm you used the exact or compatible replacement. If the SN code issue is no longer a problem, but the spa is still not heating, look and see if the heater led is on. If it is, you likely have some burned relays on the board, which can be replaced cheaper than replacing the board. If you need more help, email me at info@coastsideservices.com

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