Room pings out.

When I come back to my computer, I get this message:

[08:56a] Error: ERROR :Ping Timeout: [g33k™!xxxxxxxxxxxxxxxxxx@BuzzenPassport]
[08:56a] Disconnected.
[08:56a] Connecting to r-bz-01.ircwx.com:7843.
[08:56a] › You have joined the conversation.

How do I stop this from happening?

It's not responding to the ping with a pong return. Could be the save resources feature on modern browsers that are not keeping the connection alive on inactive tabs.

Bingo, figured it out. Thank you.

You're welcome. Glad you got it sorted!