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6 • Remedying malfunctions
80116-938_V24392
2023-03
N-A 55 NESSY: Split return elec-
trode connected.
Select the type of return
electrode used. If the
message persists, check
the return electrode
accessories.
N-A 190 NESSY: Symmetry warn-
ing.
Check the alignment of
the return electrode. Fol
-
low the information pro-
vided in the User Manual.
If the error persists, check
the return electrode
accessories.
N-A 191 NESSY: Current density
warning.
A higher temperature is
possible under the return
electrode! Check whether
the activation times and
the effect setting can be
reduced.
N-A 192 NESSY: HF current warn-
ing. NESSY current of
300
mA exceeded.
NESSY: HF current warn-
ing (neonatal).
A higher temperature is
possible under the return
electrode! Check whether
the activation times and
the effect setting can be
reduced.
Display on the unit: N or N-A, detecting module: NM
Error code Description Additional information Action
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