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8 • Remedying malfunctions
80116-261
2018-07
CHAPTER 8
Remedying malfunctions
WARNING! Unplug the power cord from the outlet before exchanging parts of the
unit or cleaning it.
ATTENTION! Adjustments, technical tests, modifications, maintenance and repair
work may only be performed by Erbe or persons trained by Erbe. If the
work is not performed by trained persons, Erbe accepts no liability and
warranty rights become void.
Error Possible cause Remedy
The set value flashes and the
pump is deactivated.
Time out error. The activation time
of t < 20
s was exceeded.
Terminate present activation.
Then re-activate the pump.
The pump lid symbol (- n -)
flashes and the pump cannot be
activated or the already activated
pump is deactivated.
The pump lid was not closed
before activation of the pump.
Close pump lid.
The pump lid was opened with
the pump activated.
Close pump lid.
Display E 1 Motor control faulty. Change main board,
see page 44.
Display E 2 Motor current exceeds the per-
missible limit. Pump head faulty
or damaged.
Check pump head to make sure it
is fitted properly.
Change pump head if it is faulty,
see page 37.
Motor current exceeds the per-
missible limit. Gear motor faulty
or damaged.
Change gear motor,
see page 39.
Display E 3 No measurable current flow. The
connection between the gear
motor and the main board was
interrupted.
Restore connection between gear
motor and main board.
No measurable current flow. Gear
motor faulty.
Change gear motor,
see page 39.
No measurable current flow. Cur-
rent measurement gain has failed.
Change main board,
see page 44.
Display E 4 Monitoring circuit of motor con-
trol faulty.
Change main board,
see page 44.
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