Question about Dream Maker Spas Dream Maker Ez Spa Hot Tub

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My hot tub had a OH where the temp usually is, then went blank and i wasnt able to reset it. i just replaced the cord and resiliconed around the temp readout

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If you reset the spa & it immediately reads OH & shuts down I would go after your "High Limit" sensor that is attached to your heater. also double check your filter. A dirty filter will slow the water flow passing the heating element therefore alowing the water to get hotter than it should, resulting in an overheat error.
If you reset the power to the spa & your topside starts showing a crazy temp. that the water isn't, then go after the temp. sensor. It should be in or near your filter area.

Posted on Jul 13, 2010

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This is probally your temp sensor. Where it is on your system is hard to say. If you have a book on the system it will be in there.

Posted on Jul 05, 2010

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I have just replaced my circuit board (balboa 53247) for my eclipse hot tub and as soon as I plugged the unit in, I got an OH reading from the top-side control. Then I noticed that if I pulled the temp....


Unfortunately, I would have started with the sensors and then escalated from there. A hot tub is one of those items that I generally recommend hiring a technician to sort out, it's just flat not worth the headache of troubleshooting without the know-how.

As for your particular problem, the OH code on a Balboa control pack is "O.ver H.eating" it means that the heat sensor detected high temp and shut down to prevent damage to the system (as well as cooking you like a pink lobster) The sensor could be bad or the control board could be malfunctioning. A new sensor is $75-85 if memory serves me and is relatively easy to replace. one sensor is in the heating tube and the other is screwed into the tub shell to monitor tub temp. I would suggest new sensors, both of them because when one goes out the other usually isn't far behind. Make sure you shut the power to the tub off at the breaker box before doing any kind of tub repair. If you have shutoff valves on your tub you can replace the internal one without draining the tub. the one in the shell you need to drain to replace (at least to the sensor hole level) I hope this helps you to get your tub working properly again, if you still experience issues after this, I suggest biting the bullet and calling in a tech. Thanks for your question =)

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Reads OH but still cold


you either have a bad temperature sensor (check the wires for damage) or a bad circuit board. I would recommend replacing the temp sensor first. If that doesn't work, pull the board and take it and have it tested.

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Be absolutely certain to "burp" every bubble of atmosphere from the coolant system too. Air bubbles have the amazing ability to prevent coolant flow and will cause all sorts of problems, especially if the bubble wants to hang around the temperature sensor location.

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My guess will be the coolant temperature sensor. Then have the problem code reset, remove all air from the coolant and let us know how this worked.

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"OH" is an overheat error. In normal function, it is used as a safety shut off if the spa water temperature reaches over 110 degrees in the event of a thermostat failure. But more commonly, (if the water temp hasn't gotten too hot) it indicates that the temp sensor(s) have failed. If you have a digital display on the topside controller of your spa, then it is a circuit board controlled spa pack. Most spa builders use the same control pack manufacturer - Balboa Watergroup. The sensor kit usually consists of 2 probes and wires that plug directly onto the circuit board. Depending on the spa, they could both be located onto the heater manifold, or one on the manifold and one mounted to the tub making direct contact with the water via a thru-wall sensor mount. If I knew the spa manufacturer, I could further assist you. If you replace the sensors, and encounter the same problem... then the circuit board is bad, and usually a costly replacement. The sensors are usually listed as a "BA sensor assy" Hope this helps you,

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