Hot tub throws breaker

I have a Viking tub that keeps throwing the breaker as soon as you try to turn on the breaker the last time it was a heater i know nothing about the heater or where it is could someone help.

Test all of the fuses for continuity first then what you want to do is unplug all of the components from the control box and turn the power back on. The heater is the stainless steel tube under or behind the control box. To disconnect the power to the heater open the box and you will see 2 terminals coming thru the box from the heater. Very carefully unscrew the nuts with out bending or breaking the fragile terminal pins. Pull the wires away from everything in the pack so as to not create an arch when the power is restored. One by one plug them back in except for the heater and turn the breaker back on. (Plug the pump in turn the breaker back on , if it trips that is the problem, if not go on to the next part) If you plug everything back in and the breaker does not trip on one individual part connect the heater again and turn the power on. If you still can not locate the problem you can pull the control box and send it to us for testing. Send the box to Easy Times Hot Tubs, Inc. 11 Vernon Ave. Glen Burnie, MD 21061 Attn: Repair department. We will evaluate the control box and call you with an estimate on the repair. Once we receive the box it will take about 3-7 business days for a response from us.