Arrived at location on 2/28/22 - Examined unit, staff explained booster was spraying water from pressure relief valve. Shut off power at disconnect to the right of booster and removed front cover. Found two elements with residue on them, bottom left and bottom right. Checked elements for continuity to ground, tested direct short to ground. Found two 35a fuses blown, one for left side one for right. Water is very hard here, booster tank is most likely full of lime. Did not remove elements to check to prevent unit from being completely unusable. Called Chris, decided to order two fuses and just remove elements from heating circuit until unit can be replaced. Chris would like quote to replace and also fuses ordered and to return to remove elements from the heat circuit so unit will perform better than what it is now. Returned to location on 3/3/22 - Replaced two fuses and removed bottom left and bottom right elements from circuit. Unit working for now.