Indeed, it seems that, for some reason, the MANUALBETSJMSADAPTER Data Adapter does not receive any heartbeat from the remote counterpart.
The "Received heartbeat: 823" message reported in the log probably refers to the TICKSJMSADAPTER Data Adapter.

Can you confirm that impression, by analyzing the heartbeat related messages on the full log?
If this is confirmed, the jboss log should be analyzed;
you are expected to see 2 generators running there.
It might be worth differentiating in some way the log lines pertaining to the 2 Data Adapters / generators;
enabling Log4j to print the current thread name might prove to be enough.