
Trou
ble
sh
oo
tin
g
Chillers
TurboChill™ R1234ze Air Cooled and FreeCool
155
Chiller Technical Manual 7752785 V1.12.0_10_2018
Alarms
Code
Description
Auto Reset
Unit Disabled
Component Disabled
Cause
Action
Default Alarm
Type
AL001
Comp1 MB Comms.Offline
•
•
Communication to the
compressor has failed
Check: Wiring/
Modbus connection/
Compressor
communication
board/Compressor
Fuses and Power
1 = Non Critical
AL002
Comp2 MB Comms.Offline
AL003
Comp3 MB Comms.Offline
AL004
Comp4 MB Comms.Offline
AL005
Power Meter MB Offline
•
• •
Communication to the Power
Meter has been lost
Check: Wiring/
Modbus connection/
Power Meter
AL006
Cond. Pressure1 Fault
•
• •
The Sensor has gone out of
its operating range
Check: Wiring/
Sensor
AL007
Evap.Diff.Press. Fault
• •
AL008
Evap.Flow Sensor Fault
• •
AL009
Return Temp. Fault
• •
AL010
Supply Temp. Fault
• •
AL011
Temp. Setpoint Fault
•
AL012
Cond.Air On Temp Fault
•
AL013
Clock Alarm
•
•
The internal clock has
malfunctioned
Replace Battery
AL014
Phase Failure
•
• •
The 3 phase power supply
crossed / loss (wait 30s with a
power meter on power up)
Check 3 phase
connection
2 = Critical
AL015
Emergency Stop
•
• •
The emergency stop button
has been pressed
Release the
emergency stop
button
AL016
Evaporator Flow Alarm
•
• •
No evaporator flow has been
detected
Check: pumps are
running/flow
AL017
Low Pressure 1 Switch
•
• •
The pressure in the system is
below 0.5 bar
Check: Refrigerant
charge/EEV
operation
AL018
Comp1 Status Alarm
•
•
Contactor has been switched
on but has failed to operate
Check: High
Pressure Switch/
contactor./Wiring.
1 = Non Critical
AL019
Comp2 Status Alarm
•
AL020
Comp3 Status Alarm
•
AL021
Comp4 Status Alarm
•
AL022
Mains Failure
•
• •
The permanent L4 supply has
failed to the control panel
Check: L4 supply
2 = Critical
AL023
Pump1 Status Alarm
• •
Contactor has been switched
on but has failed to operate
Check: Contactor/
Wiring
1 = Non Critical
AL024
Pump2 Status Alarm
• •
AL025
Low Supply Temperature
•
• •
The supply water temperature
is too low
Check: Flow Rate/
Unit TD