28100031
100 08/2017
Page: 11
“Engine ventilator malfunction”
control contact motor
shutdown and error
voltage loss in F5
Check electric line supplying
protection switch [F5]
message
external fan of driving motor
Check ventilator for short circuit
Remove
from
fan
Check settings of motor contactor
“Control transformer
control contact motor
shutdown and error
voltage loss in F6
Check control transformer for
malfunction”
contactor [F6]
message
short circuit
“Excess temperature
[8] temperature switch for
shutdown and error
Excess temperature of
exhaust air”
exhaust air
message
vacuum exhaust air
(Note: at present not yet available.)
“VL
T malfunction”
Internal FU bus
shutdown and error
Frequency converter malfunction
see Manual FC 302
message
“Lack of oil”
[14] oil level switch
shutdown and error
Oil level in tank below
Check oil circuit for leakage
message
minimum
Check electrical wiring
“Excess temperature oil”
[20] oil temperature switch
shutdown and error
Oil temperature above
Check functioning of oil cooler fan
message
allowed maximum
Lower refill oil, check and clean
filter matt ambient temperature
“High oil pressure”
[26] oil pressure gauge
shutdown and error
Upper threshold value of
Check [23] oil pump relief valve
message
contact manometer
and replace component if defect.
Apply lower bias to valve spring
Replace oil filter cartridge if
necessary
Check oil pipes for soiling
“Low oil pressure”
[26] oil pressure gauge
shutdown and error
Lower threshold value of
Check [23] oil pump relief valve
message
contact manometer
and replace component if defect
Apply higher bias to valve spring
Check oil circuit for leakage
Refill oil if necessary
“V
acuum too high”
[1] Pressure transmitter
shutdown and error
Unit was opened after
Open stop valve of suction line
“Pressure too high”
message
the set follow-up
Check air filter (during vacuum mode)
running time with the
magnetic valve open
Error-messages
Text in display
Response from
Effect
Caused by
Remedy
