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.
CA Spectrum 10.2.1
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