Our Question is: the current thermostat is set at 80 degrees. The spa temperature each day when we return home is 105 to 106 degrees.

In previous summers this had never happened and we are not sure why it is occurring now.

Can you give us any information or solution to this?
We verified the primary pump (the one inline with the heater) still has high and low speed. To rule out a defective pump.
Marquis Spas
Model- Journey 2001
Series- LX
Power input 230v
Black Box main control (Balboa Industries)
Top side controller- electronic
Indoor controller- electronic
2- jet pumps, dual speed
2"- stainless steel flow thru, 15" long
Thanks,
Dave