erc-timer-hook is a variable defined in `erc.el'.
Its value is
(erc-netsplit-timer)
Original value was
This variable may be risky if used as a file-local variable.
Documentation:
Put functions which should get called more or less periodically here.
The idea is that servers always play ping pong with the client, and so there
is no need for any idle-timer games with Emacs.
You can customize this variable.