%VCS_HOME%\log\engine_a.txt
VCS ERROR V-16-3-18313 TCP/IP connection via connector from cluster <clustername> to cluster <clustername> is hung; intentionally disconnecting. Auto-reconnect will occur however you may wish to examine the wac resource on system
VCS ERROR V-16-3-18311 <clustername> lost connection to cluster <clustername>
VCS INFO V-16-3-18302 Cluster <clustername> received connection from cluster <clustername>
Application Event log:
ERROR 18313(0x05df4789) Wac
TCP/IP connection via connector from cluster <clustername> to cluster <clustername> is hung; intentionally disconnecting. Auto-reconnect will occur however you may wish to examine the wac resource on system <WAC IP>
The following steps can be performed to keep these messages from occurring:
1. Open Java Console
2. Go to Edit --> Configure Heartbeats
3. Select Existing Heartbeat and click the Configure button
4. Change Timeout to 60 (Default is 30 seconds) as shown in Figure 1
Figure 1
5. Offline the WAC resource (located in the ClusterService Group) as seen in Figure 2
Figure 2

Note: Steps 5 and 6 must be performed on BOTH clusters.
7. Once the WAC resource has been restarted on both clusters, confirm errors are no longer logged every 3 minutes