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 the thermostat in the tub? Thanks mark

thirsty birds OR more likely pump/pumps shaft seals are leaking take off side and inspect add picture to this question if you need more help.
Jay the pump repair guy longwood Florida

This may help?
Fill spa to highest level possible.
Heat to 100 degrees or higher.
Then, with your bare hand feel throughout the bottom rim and anywhere else you are able to: see if you can feel "Warm/Hot" water. Any "Cold" water is not the area of the leak, that water has "Travelled" there. The warmer the water, the closer you are to the origin.

If the owner's manual does not give an explanation of the error code is, in the troubleshooting guide, you'll need a service / repair manual. Perhaps calling around to a few local appliance parts and repair shops- someone can clue you in on what the problem is and how to repair it.

Turn off all power to the hot tub as soon as you realize it is overheating. The spa should have an automatic shut off when the water temperature reaches about 112 degrees fahrenheit. Call your hot tub dealer or manufacturer for service options. There are a variety of conditions that could lead to the overheating of your hot tub, but may differ in various hot tub models and brands. Check the water level of the hot tub. Low water levels could be the culprit for the over heating, so you may just need to add more water to the hot tub.
Check the shut-off valves in the hot tub. If they are closed while the hot tub heater is on, it could cause the water to reach unsafe temperatures.
Clean the hot tub filter. A dirty filter could be blocking the flow of water, causing the water to sit in the hot tub and overheat.
Turn the power back on after finding the problem and talking to the hot tub dealer. The hot tub will probably not start back up until the water reaches a safe temperature

There are two main items to check. I do not recommend them unless you are qualified to work with electrical. The 2 main things that this could be are:
1. Pressure switch failure( (hot tubs need a sensor to tell the computer when it is safe to operate. If the pressure switch is out, then it will not heat) if this is a hot tub with a 24 hour circulation pump, then the pressure switch would actually be a flow switch.
Fix: Replace pressure switch/ flow switch
2. Heater element failure. (This type of failure typically trips a GFCI breaker)
if the heater element is out, then it will short to ground causing the hot tub to shut down repeatedly.

Notes: Are there any trouble codes coming up on the display panel? these help out greatly when troubleshooting like this via- messages

sounds like a bad water temperature sensor. It's either in a sensor well (in the tub) or in-line in the plumbing.

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.