035-19569-101 (0109)
6-5
GB
6.6.2 Safety Shutdowns
If the chiller shuts down on a SAFETY shutdown,
the chiller will restart when the shutdown condition is
removed. These shutdowns require the operator to
manually reset the graphic control centre (OptiView)
prior to restarting the chiller.
Common Shutdowns
Evaporator – Low Pressure
Evaporator - Low pressure - Smart freeze
Evaporator – Transducer or Leaving Liquid Probe
Evaporator – Transducer or Temperature Sensor
Condenser – High Pressure Contacts Open
Condenser – High Pressure
Condenser – Pressure Transducer Out 0f Range
Auxiliary Safety – Contacts Closed
Discharge – High Temperature
Discharge – Low Temperature
Oil – High Temperature
Oil – Low Differential Pressure
Oil – High Differential Pressure
Oil – Pump Pressure Transducer Out of Range
Oil – Sump Pressure Transducer Out of Range
Oil – Differential Pressure Calibration
Oil – Variable Speed Pump – Pressure Setpoint
Not Achieved
Control Panel – Power Failure
Motor or Starter – Current Imbalance
Thrust Bearing – Proximity Probe Clearance
Thrust Bearing – Proximity Probe Out of Range
Thrust Bearing - Limit Switch Open**
Watchdog – Software Reboot
Surge protection - Excess surge
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Solid State Starter Shutdowns
LCSSS Shutdown - Requesting Fault Data
LCSSS - High Instantaneous Current
LCSSS - High Phase (X) Heatsink Temperature
-Running
LCSSS - 105% Motor Current Overload
LCSSS - Phase (X) Shorted SCR
LCSSS - Open SCR
LCSSS - Phase Rotation
Variable Speed Drive Shutdowns
VSD Shutdown – Requesting Fault Data
VSD – 105% Motor Current Overload
VSD – High Phase A Inverter Heatsink Temp.
VSD – High Phase B Inverter Heatsink Temp.
VSD – High Phase C Inverter Heatsink Temp.
VSD – High Converter Heatsink Temperature
VSD - High Inverter Baseplate Temperature
VSD - High Phase A Inverter Baseplate
Temperature
VSD - High Phase B Inverter Baseplate
Temperature
VSD - High Phase C Inverter Baseplate
Temperature
VSD – Precharge Lockout
Harmonic Filter – High Heatsink Temperature
Harmonic Filter – High Total Demand Distortion
* Compressors H3 and J only
**Compressors P, Q, H4 thru H8 only
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