emptied my hot tub for its semi-annual cleaning. The heat was turned down b/c of the summer. When i emptied it and filled it back up no heat. The heat pump still pumps b/c i can feel water flow but the water is not heated. I have left the heater on for a few days and it is still ice cold
Normally this is a handled by a plumber or spa specialist, not an electrican.
But first make sure that the breakers are on. To be sure turn them off and then back on. And you might have a feeder breaker in the main panel and one or more in a sub-panel.
Likewise for any GFCI protectors.
Depending on how it is wired you might be have separates for the motors and the heater.
"The heat was turned down b/c of the summer. "
A guess is that while turn down the heater was still powered up and when water was drained it turned on burned out.
But first make sure that the breakers are on. To be sure turn them off and then back on. And you might have a feeder breaker in the main panel and one or more in a sub-panel.
Likewise for any GFCI protectors.
Depending on how it is wired you might be have separates for the motors and the heater.
"The heat was turned down b/c of the summer. "
A guess is that while turn down the heater was still powered up and when water was drained it turned on burned out.