Stulz CyberCool - 8. Malfunction; Alarm message

50
cybercool indoor chiller original instructions
EN/09.2017/G44 © STULZ GmbH – all rights reserved
Alarm message Cause for alarm Cause Elimination
High pressure #
failure
Highpressureswitchhas
triggered
1. outside temperature too high Install bigger condenser.
2.condenserfandefective. Checkfunction.
3.condensercoilsoiled. Cleancondenser.
4. overcharge of refrigerant circuit Dischargeanddisposerefrigerant.
5.electricconnectionofhighpres-
sureswitchloose.Cabledefective.
Checkconnectionandcable.
6.triggerpointadjustedtoolow. Checksettingofhighpressureswitch.
Press black release button at HP
switch after elimination of error.
Low pressure #
failure
Low pressure switch has
triggered.
1. Insufficient refrigerant charge.
Leak in refrigerant circuit.
Repair the leak. Refill refrigerant.
2.electricconnectionoflowpres-
sureswitchloose.Cabledefective.
Checkconnectionandcable.
3.triggerpointadjustedtoohigh. Checksettingoflowpressureswitch.
4. Expansion valve defective. Exchange expansion valve.
Power switch comp.
#
Compressorpowerinterruptor
has triggered.
1. compressor motor defective. Checkcompressormotoronvoltage
continuity and current consumption.
2.feedingvoltagetoolow. Checkalimentationunderload.
Compressor #
failure
Thesoftstartmodule(option)
or the protection device has
detected an error.
. Find the exact cause of error.
Sensor # failure Thetolerancetotheaverage
valueadjustableinthecontrol-
ler has been exceeded.
1. Big difference of measeured
values in selected zone.
Checkmeasuredvaluewithanexternal
measuring instrument.
2.sensordefective. Replace defective senosr.
Sensor # broken Themeasuredvoltage/current
is outside the range defined in
the controller.
1. electrical connection defective. Checkconnections.
2.sensorcabledefective. Checkcableoncontinuity.
3.sensordefective. Checkmeasuredvaluewithexternal
thermo meter, pressure gauge. Replace
defective sensor.
EEV #: Pressure
sensor error
Thecontrolmoduleofthe
expansion valve has detected
a malfunction of the pressure
sensor.
1.Cablebreakageorfaultycontact Checkcableandcontacts.
2.Pressuresensordefective. Replace pressure sensor.
EEV #: Temperature
sensor error
Thecontrolmodulehasdetect-
ed a malfunction of the temper-
ature sensor.
1.Cablebreakageorfaultycontact Checkcableandcontacts.
2.Temperaturesensordefective. Replace temperature sensor.
# stands for a number in case of several components of the same kind.
8. Malfunction