User's Manual of Fiber Laser Chiller
24
high
E08
Low
temperatur
e water
Low
temperature
alarm
A : Low water temperature
of the equipment
Stop the compressor,
not the pump
A: Check the relay
for adhesion
E09
Room
temperature
water
Probe
failure
A: Ambient water probe
short circuit / broken
wire
B: Damaged ambient
water probe
No pump stop, all
other outputs stop
A: Inspection of
probe terminals and
connections
B: Replacement probe
E10
Room
temperature
water
High
temperature
alarms
A : Insufficient water flow
B : Poor ventilation
Electric heating of
room temperature water
only
A: Check if there is
a return of water at
room temperature
and if the water
circuit is blocked
B: Clear the
surrounding clutter
E11
Room
temperature
water
Low
temperature
alarm
A : Low water temperature
of the equipment
Stop the compressor,
not the pump
A: Check the relay
for adhesion
E12
Room
temperature
water
Flow alarms
A: Clogged normal
temperature water line
B : reversed inlet and outlet
connections
C: Leakage in ambient
water line
D : Damaged flow switch
Stop electric heating of
room temperature water
A: Testing the
cutting head for
backwater
B: Check inlet and
outlet lines
C: Check and tighten
water line
connections
D: Replace flow switch
[Remarks]: For faults requiring manual reset, press <▲> for 3 seconds on the split controller to reset
the fault and start automatically when the fault is removed.
Table 3 List of LCD controller fault names
Fault name
Testing conditions
Troubleshooting
Reset
Pressure switch
alarms
Press operation [pressure
switch alarm delay]
Time after detection
Stop all compressors, no
pumps
Automatic
Compressor
failure
Post-operational
compressor test
Manual
Press current too
low
Manual
Water pump
overload
Post-operation testing of
water pumps
Discontinued units
Manual
Pump current too
low
Manual
Probe
①
Low
temperature alarm
Power-up detection
Stop all compressors, no
pumps
Automatic