8> Simple Troubleshooting - S&A CWFL-500 User Manual

<8> Simple troubleshooting
Failure
Machine turned on but
unelectrified
Flow Alarm
(controller displays E6) 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 E6), 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
（Temperature controller
panel display E2）
Alarm for ultra-high room
temperature(Temperature
controller panel display E1)
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
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 in good contact.
Check the water level gauge display,
add water until the level shown in the
green area; And check whether water
Unpick and wash the dust gauze
To ensure a smooth ventilation
To improve the power supply circuit or
To reset controlling parameters or
To ensure there is sufficient time
Reduce the heat load or use other
model with larger cooling capacity
To improve the ventilation to guarantee
that the machine is running under 40℃.
12
CWFL-500 Series
Approach
and in good contact.
circulation pipe leaks.
Check water circulation pipe
regularly
for air outlet and inlet
use a voltage regulator
restore factory settings
for refrigeration
(more than 5 minutes)
Increase water temperature or
to preserve heat for pipeline
Open the injection port