8>Simple Troubleshooting - S&A CW-7500 User Manual

<8>Simple troubleshooting
Failure
Machine turned on but
unelectrified
Flow Alarm(controller displays
E01) use a water pipe directly
connect to the water outlet and
inlet but still without water
flowing
Flow alarm occurs while
running with other equipment
(controller displays E01), but
there is water flowing and no
alarm when use a water pipe
directly connected to the chiller
water outlet and inlet
Ultra-high temperature alarm
(controller displays E04)
Alarm for ultra-high room
temperature
(controller displays E02)
Serious problem of condensate
water
Water drains slowly from outfall
during water changing
Failure Cause
Power cord is not plugged in place
Fuse burnt-out
Water level in the storage water tank is
too low
Water circulation pipes are blocked or a
pipe bending deformation.
Blocked dust gauze, bad thermolysis
Poor ventilation for air outlet and inlet
Voltage is extremely low or astable
Improper parameter settings on
thermostat
Switch the power frequently
Excessive heat load
The working ambient temperature is too
high for the chiller
Water temperature is much lower than
ambient temperature, high humidity
Injection port is not open
Check and ensure the power interface and
the power plug is plugged in place and in
Open the electric box cover, check the
protective tube, replace with spare one if
necessary and check whether the power
supply voltage is stable; Check and ensure
the power interface and the power plug are
Check the water level gauge display, add
water until the level shown in the green
area; And check whether water circulation
Unpick and wash the dust gauze regularly
To ensure a smooth ventilationfor air outlet
To improve the power supply circuit or use
To reset controlling parameters or restore
To ensure there is sufficient time for
refrigeration (more than 5 minutes)
Reduce the heat load or use other model
To improve the ventilation to guarantee
that the machine is running under 40℃
Increase water temperature or to preserve
18
CW-7500 Series
Approach
good contact
in good contact
pipe leaks
Check water circulation pipe
and inlet
a voltage regulator
factory settings
with larger cooling capacity
heat for pipeline
Open the injection port