My topside control is out and I just emptied and refilled the tub. So the water is cold. The therm won’t read now so should I shut the power off to the tub till I get the part? Or will it do no harm?2006 pacific spa.

My topside control is out and I just emptied and refilled the tub. So the water is cold. The therm won’t read now so should I shut the power off to the tub till I get the part? Or will it do no harm?2006 pacific spa.