Manual can be found at the link below:
http://cp-thermofisher.kb.net/display/4/kb/article.aspx?aid=255333
Page 16 for error codes and gives the following for error 003:
Error 003: Runaway
During stopping, rotor has not been decelerating for 8
seconds, or when at standby, rotor speed exceeds
600 RPM. The rotor coasts to a stop.
Unfortunately it doesn't seem to be something you can fix yourself.
The instruction below is how to open the centrifuge manually:
5.2 Cover Interlock Bypass
If power fails, the cover remains locked. If you need to remove samples from
the unit before power is restored, use the cover interlock bypass after the
rotor has come to a stop.
Unplug the centrifuge. Locate a hidden plug just below the front panel. Use
a screwdriver to remove this plug. Pull the attached cord to release the cover
interlock. Reassemble the plug in the hole.
Do not perform this operation routinely. The centrifuge’s cover interlock
provides operator safety and allows the cover to be opened promptly
whenever rotation has stopped
Hope you manage to open the cover and retrieve your culture.