32
ID
Fault message
Effects
Possible cause
49
"Sensor fault,oil press.2"
Compressor 2 remains shut
down for as long as the fault is
current
The oil pressure sensor of com-
pressor 2 is faulty
50
"Sensor fault,oil press.3"
Compressor 3 remains shut
down for as long as the fault is
current
The oil pressure sensor of com-
pressor 3 is faulty
51
"Sensor fault, room temp"
The room temperature cannot
be measured
Room temperature sensor faulty
52
"Soft starter 1 faulty"
Compressor 1 switches off and
attempts to start up again after
the restart block
Soft starter of compressor 1 is
faulty
53
"Soft starter 2 faulty"
Compressor 2 switches off and
attempts to start up again after
the restart block
Soft starter of compressor 2 is
faulty
54
"Soft starter 3 faulty"
Compressor 3 switches off and
attempts to start up again after
the restart block
Soft starter of compressor 3 is
faulty
55
"Oil press. diff. 1 too low"
Compressor 1 remains shut
down until the fault is acknowl-
edged
Oil pressure differential in com-
pressor 1 is too small
56
"Oil press. diff. 2 too low"
Compressor 2 remains shut
down until the fault is acknowl-
edged
Oil pressure differential in com-
pressor 2 is too small
57
"Oil press. diff. 3 too low"
Compressor 3 remains shut
down until the fault is acknowl-
edged
Oil pressure differential in com-
pressor 3 is too small
58
"Winding protectn 1 trig."
Compressor 1 remains shut
down until the fault is acknowl-
edged
Winding protection of compres-
sor 1 is faulty
59
"Winding protectn 2 trig."
Compressor 2 remains shut
down until the fault is acknowl-
edged
Winding protection of compres-
sor 2 is faulty
60
"Winding protectn 3 trig."
Compressor 3 remains shut
down until the fault is acknowl-
edged
Winding protection of compres-
sor 3 is faulty
61
"High press. switch 1 trig."
Compressor 1 remains shut
down until the fault is acknowl-
edged
High pressure switch of com-
pressor 1 is faulty
62
"High press. switch 2 trig."
Compressor 2 remains shut
down until the fault is acknowl-
edged
High pressure switch of com-
pressor 2 is faulty
63
"High press. switch 3 trig."
Compressor 3 remains shut
down until the fault is acknowl-
edged
High pressure switch of com-
pressor 3 is faulty
64
"Refrig. leak, pre-alarm"
Room ventilation is switched on
The refrigerant sensor has meas-
ured an average concentration of
refrigerant in the air
65
"Suct. switching act."
The application limits are not be-
ing observed
Suction switching is still active in
the visualisation
66
"Fault, oil sump heater 1"
Compressor 1 switches on auto-
matically as soon as the fault is
no longer current
The oil sump heater of compres-
sor 1 was switched off for too
long
Appendix
Overview of fault messages
(cont.)
5801 531 GB
