Airedale TurboChill FreeCool 200kW - 1830kW - Manual (Page 139)

139 Chiller Technical Manual 7525355 V1.1.0_04_2013
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Chillers TurboChill™ Air Cooled and FreeCool
Alarms
Code Description
Auto Reset
Unit Disabled
Component Disabled
Cause Action Default Alarm Type
AL078 SCR Temp. Comp.4
• • Indicates insufficient cooling
to the SCR plate
Check: alarms
limits in the
compressor
1 = Non critical
AL079 System Lockout Comp.4
•
When a SCR/inverter/cavity
temperature fault occurs more
than 3 time in 30minutes
Check: motor
cooling line and
solenoids valves /
cycle power
1 = Non critical
AL080 Hours Limit Comp.1
•
•
The hours run for the
compressor has exceeded the
threshold
If component
is functioning
correctly perform
maintenance and
reset hours
1 = Non critical
AL081 Hours Limit Comp.2
•
1 = Non critical
AL082 Hours Limit Comp.3
•
1 = Non critical
AL083 Hours Limit Comp.4
•
1 = Non critical
AL084 Hours Limit Pump 1
•
•
The hours run for the pumps
has exceeded the threshold
If component
is functioning
correctly perform
maintenance and
reset hours
1 = Non critical
AL085 Hours Limit Pump 2
•
1 = Non critical
AL086 Liquid Level 1 Fault
• • Circuit 1 liquid level sensor
has gone out of range
Check: the sensor
/ Wiring
1 = Non critical
AL087 CW Valve Feedback
• •
Valve failed to open
Check: valve
operation / Wiring
1 = Non critical
AL088 Cond. Pressure2 Fault
• • •
Circuit 2 condensing pressure
sensor has gone out of its
operating range
Check: wiring /
Sensor
1 = Non critical
AL089 Low Pressure 2 Switch
• Circuit 2 suction pressure is
below 0.5 bar
Check: refrigerant
charge / EEV
operation
2 = Critical
AL090 High Cond. Pressure 2
• Circuit 2 condensing pressure
is higher than 13.6 Bar
Check: Condenser
/ Condenser Fans
1 = Non critical
AL091 Liquid Level 2 Fault
• • • Circuit 2 liquid level sensor
has gone out of range
Check: wiring /
Sensor
1 = Non critical
AL092 Evap.Inlet Temp. Fault
• • • The sensor has gone out of its
operating range
Check: wiring /
sensor
1 = Non critical
AL093 Serious Alarm Comp.1
•
The compressor has been in
alarm more than 5 times in 2
hours
Check the
operation of the
compressor /
circuit
1 = Non critical
AL094 Serious Alarm Comp.2
•
1 = Non critical
AL095 Serious Alarm Comp.3
•
1 = Non critical
AL096 Serious Alarm Comp.4
•
1 = Non critical
AL097 Evap. Low Flowrate
• •
The evaporator flow rate is
equal to or less than 20% of
design
Check the
evaporator strainer
or for any other
blockages
1 = Non critical
AL098 Liq. Valve EVD1 Alarm
•
The electronic expansion
valve driver used to position
the flooded evaporator liquid
level control valve is in alarm
Check the wiring
between the EVD
and the liquid
level control
valve / check
the operation of
the control valve
stepper motor
2 = Critical
AL099 Liq. Valve EVD2 Alarm
•
2 = Critical