Work Performed: Responded to no cooling call. Previously performed maintenance on May 27. Found the breaker had tripped. Investigated possible causes, including checking the capacitor and contactor—both tested within acceptable range. Also measured startup amp draw, which was 19A, and full load running amps monitored for 15 minutes was 7 amps. Results: System's startup current is within spec, though close to the breaker’s 20A limit. Rating plate indicates a minimum ampacity of 18A and a maximum overcurrent protection of 30A. The current breaker may be undersized, potentially causing nuisance tripping. Recommendation: Recommended replacing the breaker with a properly sized 30A unit. I did check truck stock but did not have a matching breaker on hand. If breaker does not continue to trip, replacement can be done during fall maintenance unless client prefers to change it sooner.