CWUL-05/10/20 Series
15
<8> Troubleshooting
Failure
Failure Cause
Approach
Machine turned on but
unelectrified
Power cord is not plugged in place
Check and ensure the power interface
and the power plug is plugged in place
and in good contact.
Fuse burnt-out
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.
Flow Alarm
，
use a water pipe
directly connect to the water
outlet and inlet but still
without water flowing
Water level in the storage water tank is too
low
Check the water level gauge display,
add water until the level shown in the
green area; And check whether water
circulation pipe leaks.
Flow alarm occurs while
running with other
equipment, but there is water
flowing and no alarm when
use a water pipe directly
connected to the chiller
water outlet and inlet.
Water circulation pipes are blocked or a
pipe bending deformation.
Check water circulation pipe
Ultrahigh water temperature
alarm
(controller displays E2)
Blocked dust gauze, bad thermolysis
Unpick and wash the dust gauze
regularly
Poor ventilation for air outlet and inlet
To ensure a smooth ventilation
for air outlet and inlet
Voltage is extremely low or astable
To improve the power supply circuit or
use a voltage regulator
Improper parameter settings on thermostat
To reset controlling parameters or
restore factory settings
Switch the power frequently
To ensure there is sufficient time
for refrigeration
(more than 5 minutes)
Excessive heat load
Reduce the heat load or use other
model with larger cooling capacity
Ultrahigh room temperature
alarm
(controller displays E1)
The working ambient
temperature is too high for the chiller
To improve the ventilation to
guarantee that the machine is running
under 40
℃
.
Serious problem of
condensate water
Water temperature is much lower than
ambient temperature, high humidity
Increase water temperature or
to preserve heat for pipeline
Water drains slowly from
outfall during water changing
Injection port is not open
Open the injection port
