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83001602.Kf
II.
Troubleshooting
Error
code
Display view
Type of message
Message description
Cause of the message
Troubleshooting
Reaction of the chiller
111
HP warning
Group warning
Condensation pressure
has exceeded the
warning limit
Condensation pressure
threatens to run against the
design limit of the high
pressure stop,
Clean the condenser and filter.
Check the function of the fan.
Check the cooling water circuit.
Install the cover panels.
A compressor is switched off if the
number of compressors is > 1. After
pressure reduction, the compressor
switches on again.
All other components continue to run.
Warning is saved.
Manual reset.
121
LP warning
Group warning
Evaporation pressure
has fallen below the
warning limit
Evaporating pressure
approaches the low pressure
stop limit
Check liquid flow. Check the
function of the expansion valve.
Check the refrigerant level.
A compressor is switched off if the
number of compressors is > 1 (delayed
from v. 2.60). After pressure increase,
the compressor switches on again.
All other components continue to run.
Warning is not saved,
Automatic reset.
123
Compr.Pump Out Warn Group warning
When the EEV closes,
the low pressure does
not drop below the set
value.
EEV does not close, MV hot gas
bypass leaks, refrigerant circuit
leaks.
Check EEV, check MV hot gas
bypass, check refrigerant circuit
for leaks.
Compressor shuts down after the set
time. 1x automatic reset. The
compressor is blocked after the
second attempt (fault stop).
131
Superheating
Group warning
from Version 2.71
previously fault
message AL171
151
HP STOP
Group fault alarm
Condensation pressure
is outside the allowable
range.
Waste heat from the chiller
circuit cannot be dissipated.
Clean the condenser and filter.
Check the function of the fan.
Check the cooling water circuit.
Install the cover panels.
All compressors shut down.
(time-delayed from V. 2.60)
All other components continue to run.
Alarm is saved.
Manual reset.
