Erbe VIO 3 - Page 38

6 • Remedying malfunctions
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80116-938_V24392  2023-03
N 146 Temperature of the micro-
controller is rather low.
Allow the unit to acclima-
tize (see also the notes in
the Technical Data).
N 147 Temperature of the micro-
controller is rather high.
Allow the unit to cool
down.
N 247 –
255
If the advisory message
persists and can be repro
-
duced, notify Erbe Service.
N-A 48 NESSY: No return elec-
trode type defined.
Select the type of return
electrode used. If the
message persists, check
the return electrode
accessories.
N-A 49 NESSY: There is no con-
tact (plugged in).
Return electrode monitor-
ing has not detected any
contact with the skin. =>
Check the return elec
-
trode accessories.
N-A 50 NESSY: Non-split return
electrode connected.
Select the type of return
electrode used. If the
message persists, check
the return electrode
accessories.
N-A 51 NESSY: R_NE Error 
(> dynamic limit).
Skin contact of the return
electrode is not suffi
-
cient. Follow the informa-
tion provided in the User
Manual. If the error per
-
sists, check the return
electrode accessories.
N-A 52 NESSY: Symmetry error. 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 53 NESSY: Short circuit at
split return electrode.
Check the return elec-
trode accessories.
N-A 54 NESSY: Resistance at non-
split return electrode.
Check the return elec-
trode accessories.
Display on the unit: N or N-A, detecting module: NM
Error code Description Additional information Action