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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.
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.
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 ...
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.
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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