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My hot tub is over heating

Unplugged it OH is displayed water is 107*

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Possibly a bad temp sensor?

Posted on Mar 07, 2015

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1 Answer

OH display and still heating


OH is overheat situation. high limits should shut down tub after 108 degrees.....high limits are shot.....replace the circ board

Dec 02, 2013 | Dream Maker Spas Dream Maker Ez Spa Hot...

1 Answer

Drained my 2000 Great Lakes Spa now OH is displayed when I turn up the heat it kicks out the breaker..


OH is overheat due to insufficient water flow through the heater.
Common Causes:
  • Gate valves not opened/partially closed.
  • Air trapped in suction lines or pump
  • Blocked suction fitting
  • Dirty filter
  • Restricted water discharge lines

Try remove filter cartridge and run spa.
Check pressure switch for continuity.
Unplug & plug hi limit sensor.

Oct 14, 2012 | Qca Spas Majestic Series Aruba Xl Hot Tub

1 Answer

Motor will not come on. flashing OH on tub display dial. Dream maker Model #8003 x 400 series 86L Just purchased used spa and have no manual or directions. thanks


OH stands for Over Heat situation.
If the motor is not working at all, you are getting the OH code because of that. The OH happens when there is not enough circulation in the hot tub which causes the water near the heater to overheat the sensor located in that area. It sounds like either the pump has failed, the wiring has shorted to the motor, or the control board is not telling the pump to come on.
Its probably a bad motor since the heater is obviously activating, which it wouldnt if the pumps motor was getting no power. Replace motor and all should be well again.

Apr 14, 2011 | Dream Maker Spas Dream Maker Ez Spa Hot...

1 Answer

Over heating showing oh water to hot


It sounds like you may have either too slow of water flow moving through the heater ( caused by a dirty filter ), or you may have a bad high limit sensor. Check to see that the filter is clean first.

Mar 28, 2011 | Dream Maker Spas Dream Maker Ez Spa Hot...

1 Answer

Hot tub won't sence heat display says 70 and water is 114. All i did was shut the breaker off and change the seals. i have checked all the cables in and out of the control panel. Do you think it could be...


Yes ... it is not working or it is disconnected ... You have a serious defect somewhere.

Please, NEVER GET INTO WATER MORE THAN 105f ... and if it is at 105 ... limit your stay to 15 minutes ... Never put a kid into water that is more than 98. Modern hot tubs are not suppose to heat above 105.

not to mention it cost you a arm and a leg to heat that water ...

May 14, 2010 | Pool & Spa

1 Answer

My hot tub pump is getting loud. And if placed on high I can smell a burning smell, so obviously not being used. I've left it on to keep it heating and the plumber is scheduled for this week. However...


It sounds like the bearings have gone bad in the jet pump. A shaft seal leak will sometimes let water get into the bearings and the motor will get louder and louder. Running it on high can intensify the noise and heat created by bad bearings. Eventually, the bearings will seize and the motor will try to turn and since it can't, it will get really hot. The motor has built in high limits to keep from burning up completely but it will smell like it's burning. I would replace the pump motor and seal, should take care of the problem. The OH may have been caused by the pump not moving enough water to run the heater and tripped the heaters high temp sensor. I hope this helps.

Oct 13, 2009 | Qca Spas Jewel Series Topaz Plus Hot Tub

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.

Apr 10, 2009 | Qca Spas Jewel Series Topaz Plus Hot Tub

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