The Service Dashboard is considering non-critical alarms such as major and minor as critical and considers that the service is unavailable when it is not.
This issue has been resolved in the following:
Spectrum_10.02.01.D316a debug patch for Spectrum 10.2.1
Spectrum_10.03.00.BMP_10.3.001 bi monthly patch for Spectrum 10.3.0
Spectrum 10.03.02 and above