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I checked the 20 amp breaker and it doesn't appear to be tripped.
Sounds like you have waited a long time, someting is up. Does the Caspain not have a digital temp readout?
Go turn off both breakers. Wait 30 seconds. Then turn on just the 20 amp breaker. Go to the spa - you should see the panel going through the start up stuff. Once that settles, see if your 'power' indicator is on solid or blinking. If it's on solid, then run the jets a bit - ten minutes should be fine. In fact, add chlorine and such while you're waiting.Then turn on the 30 amp breaker. Close the lid and check it in 4 hours. Should be warm, perhaps not hot.Let us know -Should I turn the jets off before I switch the 30 amp breaker back on?
Go turn off both breakers. Wait 30 seconds. Then turn on just the 20 amp breaker. Go to the spa - you should see the panel going through the start up stuff. Once that settles, see if your 'power' indicator is on solid or blinking. If it's on solid, then run the jets a bit - ten minutes should be fine. In fact, add chlorine and such while you're waiting.Then turn on the 30 amp breaker. Close the lid and check it in 4 hours. Should be warm, perhaps not hot.Let us know -