ZOLL R Series Monitor Defibrillator Rev J - Manual (Page 66)

R Series Service Manual
2-14 9650-0903-01 Rev. J
ZERO FAILED The zero operation did not complete successfully.  Clear the occlusion, remove any source of CO
2
,
and try zeroing again.
If problem persists, contact ZOLL Technical
Support.
Error Message Explanation User
Advisory Technical Action