the control box indicates Mt hood spa,
it has a timer and a switch to change to program1 or program 2
for timed heat or thermastat heat.

I dont know or understand how to work this unit or get my heat to stay constant, if anyone can help me find directions for use of this system i would greatly appreciate it.

also tub has 3 button operations, what does each of these buttons do and how should they be used.

Thanks
Keith

For Timed heat, you can set the timer to run the spa for a certain amount of time and it will only heat during this time.

For Thermostat heat, whatever temp it is set to it will run until this temp is reached and keep it there.

The best way is to set it to Thermostat heat and also set the time clock to run a few hours a day, this way you get a constant temp and also get some circulation in the spa.

As for the 3 buttons have you tried pressing them? My guess is that are for the light, jets and blower.
hope this helps.