Stulz C7000 - Alarm Texts

165 © STULZ GmbH – all rights reserved EN/06.2019/G57
C7000 INSTRUCTIONS fOR a/C UNITS
8.4 Alarm texts
# stands for a number.
* the corresponding alarm can be configured to release a common alarm which can control further equipment by a digital output.
** the alarm text can be configured.
Except the alarm "UNRELIABLE EEV" all alarms must be manually reset on the C7000AT or C7000IOC.
Alarm text Cause Effect
LOW PRESSURE 1
LP switch/LP limit bigger than actual value,
circuit 1
Compressor 1 off
COMP 1 FAILURE/HP
HP switch/HP threshold exceeded, circuit 1,
Internal compressor power switch
Compressor 1 off
LOW PRESSURE 2
LP switch/LP limit bigger than actual value,
circuit 2
Compressor 2 off
COMP 2 FAILURE/HP
HP switch/HP threshold exceeded, circuit 1,
Internal compressor power switch
Compressor 2 off
EHEAT # FAILURE Temperature switch/heating MCB Heating # off
HUMIDIFIER # FAIL Humidifier MCB Humidifier # off
AIRFLOW FAILURE # Airflow differential switch all components off
FILTER ALARM Filter differential switch
Fan speed increase according to parameter
"Filter offset"
EXTERNAL ALARM # External alarm signal no direct effect*
HUMIDIFIER # 5µS Conductivity >5µS no direct effect*
HUMIDIFIER # 20µS Conductivity >20µS Ultrasonic humidifier off
PUMP # FAILURE Pump # MCB triggered Pump # off
DRYCOOLER # FAIL Drycooler # MCB triggered Drycooler # off
WATER ALARM Water detector Humidifier off
RETURN AIR TEMP TOO HIGH Return air temp. > limit value no immediate effect
RETURN AIR HUM TOO HIGH Return air humidity > limit value no immediate effect
SUPPLY AIR TEMP TOO HIGH Supply air temp. > limit value no immediate effect
SUPPLY AIR HUM TOO HIGH Supply air humidity > limit value no immediate effect
WATER TEMP TOO HIGH Water temp. > limit value no immediate effect
RETURN AIR TEMP TOO LOW Return air temp. < limit value no immediate effect
RETURN AIR HUM TOO LOW Return air humidity < limit value no immediate effect
SUPPLY AIR TEMP TOO LOW Supply air temp. < limit value no immediate effect
SUPPLY AIR HUM TOO LOW Supply air humidity < limit value no immediate effect
WATER TEMP TOO LOW Water temp. < limit value no immediate effect
FIRE ALARM Fire/smoke detector all components off
PHASE FAILURE
Phase failure, excess voltage, undervoltage,
asymmetry, phase sequence
all components off
SENSOR # EXCESS Tolerance exceeded faulty sensor # excluded
SENSOR # DEFECT
Measured voltage/current out of defined range faulty sensor # excluded
HGHEAT FAILURE Thermostat at the hotgas reheat triggered. HG reheat solenoid valve will be closed.
PRESS.SEN.ERR. EEV Pressure sensor or cable EEV defective Valve opening remains in actual position.
TEMP.SEN.ERR. EEV Temp.sensor or cable EEV defective Valve opening remains in actual position.
STEPPER ERR. EEV Stepper motor EEV defective Valve opening remains in actual position.
UNRELIABLE EEV RS485 bus connection faulty
Valve is closed after 15 seconds. With the
option "manual override switch" an OPEN/
CLOSE operation is possible.