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My spaform hot tub will not reach its temp ..we set the temp but it does not heat . the heater seems to be sound ?

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If the heater tests out good, you most likely have a problem with the water temperature sensor. Make sure that the temp readout matches the actual water temp.. Sometimes the heater will think that the water is up to temp because the temp sensor is feeding the circuit board bad info. Check sensors, replace as necessary.

Posted on Sep 16, 2010

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1 Answer

Spaform hot tub manual


check the timer or may need to reset the cycle on it..(reprogram the controller)

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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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1 Answer

Raise temp above 120


Raising temperature above 120 degrees requires service call.
Or change dip switch settings and risk voiding warranty and causing service call expense.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#temperature

Earliest versions of Rheem tankless 2006-8 let you set temperature up to 140 degrees F using remote.
However the hotter setting caused error codes because the burner cannot keep up with both high temperature and large volume of hot water rushing through pipe. Especially in winter with cooler incoming water that must be heated more to reach temperature set point.
The burner simply cannot keep up.
So Rheem changed maximum temperature at remote control to tepid 120 degrees, which is not hot enough for folks wanting hot shower, or folks filling whirlpool tub because water in tub cools before tub fills.

Oct 27, 2012 | Rheem Tankless Water Heater Main Remote...

1 Answer

In econ mode my 1998 spaform hot tub does not appear to heat but it is ok in standard mode.


in the economy mode it will only maintain a temperature so that it will not freeze. Economy mode is mostly for vacation time or for winter if you are not going to be using the hot tub for an extended period of time.
Put it into the standard mode and you will be able to have a HOT tub and will function as it should

US Parts Center

Aug 22, 2011 | Pool & Spa

1 Answer

I have a new Jacuzzi tub with a Rapid In-Line Heater. When I fill the tub the water the initial temp is 67 degrees. The heater only increases the temp to 71 degrees. What is wrong with the heater ,if...


The bath heater you have is not designed to HEAT water - they only Maintain what you start with.
You need to start the bathtub with the hot water you want. It will only heat about 1-2 degrees an hour.

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1 Answer

Water not heating


It sounds like your inline heater has stopped working. The only way to test it is to drain the water back out, remove the inline heater, and hook power to it to see if it heats up.

If it doesn't you can get one at a discount supply house (like Home Depot or Lowes) for less than $150.

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1 Answer

QCA Opal hot tub display reading OH.


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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