I have a 1998 Hot Springs Grandee. The hot springs tech has replaced 1 Jet pump, circ pump, ozonator. When I filled up the tub and added checicals and a new set of filters, I ran tub for 30 mins with no problem. Next day, I got in to use it and with both Jets on GFCI Trip---reset and and runs fine using 1 Jet pump, now when bring online both jet pumps in any combination...Meaning #1 or #2 operating alone--no problem, with both the Jet pumps on, a surge where the water surges from the jets and then no flow for a few seconds. any one of the jet pumps on ops is normal. The GFCI trips only when both Jets are on and sometimes it runs for 5 mins, 30 mins. A weird situation. anyone experience this before...thanks

Which GFCI trips, the 20 or 20?

Is there enough water in the tub....if the jet pumps are surging, then there may not be enough water going into them. Make sure the skimmer weir is going down and the filter compartment is filled with water.

Thank You for the reply. turns out the door to the fliter bay was stuck full up---duuuuh. the GFI trip problem---I found my 50A breaker was not full seated on the bus bar in the C/B panel. I am surprised it even worked. when I pulled the cover off the breaker fell out...YIKES. thanks Again!!