we have a Tiger River Siberian Model L, Serial L2D1151 that came with the house. It had not been used for two years due to a heater gone bad and freezing during the winter. We cleaned it, changed the heater out, Replaced the wet end of the Wavemaster 7000 for Jets 1 and removed the secondary drain valve due to freezing and pipe being cracked. Filled the tub, ran Jets 1 and the unit shut down. Reset at breaker box. Ran Jets 2 and it ran great for extended time frame. With Jets 2 running, again tried to run Jets 1. Jets come on as in shooting water through jets but shuts down again. suggestions?