firepiperffd

Hello, have an older, ?2000 maybe, Jacuzzi w/ Balboa controls. Works well on low, auto w/heater, and high on pump 1. Once i hit the button again, pump 2 should come on and run the other half of the jets, it does...for 1/2 a second, then,.....the whole tub shuts down and the amber ?heater light blinks... three times, pause, three times again. Any Ideas. This is the older control, with the dial for heat and one button with an amber light on remote, and the panel has a whole bunch of small relays. What do you think?? Thanks, Mark