Please use the following procedures for resetting the HRM. I had
the same problem as well. The manual does not contain the following
information.

Source for the following information. -
http://www.heartratemonitor.co.uk/nike_heart_reset.html

Nike C10 -CV10 Heart Rate Monitor. Re-initialisation of the chest
transmitter to the wrist unit

If you press all four buttons of your Nike HRM it will reset. Next
time you go to "RUN" mode, it will show "HRM LINK" error. You will
now need to "hard reset" the unit.

Nike made a late change to add a "hard reset" to the chest strap. To
re-link (re-initialise) the watch you'll need to open the battery
door on the chest strap, and use a paper clip (or the equivalent) to
push the small gold button in the battery area. There should be a
small sticker in the battery compartment that points to the reset
button.


The re-initialisation steps for the Nike C10 and CV10 digital HRM's
is:

(1) reset the watch
(2) open the battery door on the chest strap
(3) move the watch to RUN mode
(4) press the reset button in the chest strap battery area
(5) put the battery back in the chest strap (if it's not already in -
it's possible to push the button without removing the battery)
(6) hold both of the electrode to create a signal (probably not
necessary - it usually links immediately).

Eventually, Nike will either eliminate the hard reset or update the
manual to include this info



--- In niketiming@yahoogroups.com, "Adroaldo Munhoz" <amunhoz@...>
wrote:
>
> Hi,
>
> I have a Nike Triax C10 HRM that I bought less than 2 months ago.
>
> When I bought it, it worked promptly and I did not have to perform
the
> "Linking the HR Transmitter to the Watch" procedure mentioned in
the
> manual (page 14).
>
> I worked fine during these 2 months, but today I pressed the 4 side
> buttons unintentionally and the watch was reset. Now, when I
scroll to
> RUN or INTR mode, I receive the "HRM Link" message in the display,
but
> I follow the procedures in the manual (mentioned above) without
> success - there is no "HRM Link OK" message and no heart rate is
> collected.
>
> I thought that the problem was the battery in the transmitter and I
> changed the battery with a new CR2032 3V Lithium battery and tried
to
> perform the procedures again, with no success.
>
> Is there any other thing that I can do to make my HRM work again?
>
> Thanks in advance.
>
> Adroaldo Munhoz
>