For current Check Point releases, application monitoring checks the HA status too.Even when Check Point is running, the show application vap-group command shows Application State "Down" and the VAP Status is Up but not Active in show ap-vap-mapping:
For older versions of Check Point applications, the application monitoring verifies only if the processes FWD and CPD are running.
For all current Check Point releases (CPSG R70, CBI version 126.96.36.199-2 and newer), application monitoring checks the HA status too.
There are situations that can cause the HA process to not start. For example: