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
