Troubleshooting
6
If you face the trouble that is not addressed in this manual,
please contact your local dealer or closest customer service center.
24
Trouble
Cause of trouble
Countermeasure
Residual current device can not be
turned on.
Electric leakage hazard occurs.
Stop operation and contact your
local dealer or closest customer
service center.
Excess current flows.
No displays is shown on indicator
when turning on Power switch.
Mains connector is not plugged
into outlet or not plugged into
outlet completely.
Plug main connector after turning
off residual current device and
power switch.
Power is not supplied.
Turn on the breaker of distribution
board.
Residual current device is turned
off.
Turn the residual current device
on.
Residual current device is
impaired.
Stop operation and contact your
local dealer or closest customer
service center.
Power switch is impaired.
Temperature controller is impaired.
Refrigeration unit does not work.
High-pressure switch for
refrigeration
unit or over load relay protection
Circuit works.
The thermal load on the
refrigerator is extremely large.
Reduce the load.
Use the unit where the ambient
temperature is lower than 35
℃
.
Refrigeration unit is impaired.
Stop operation and contact your
local dealer or closest customer
service center.
Water level lowers and cooling coil
is exposed, which makes the unit
perform over load operation.
Fill circulation liquid in low
temperature circulation bath.
The unit is not cooled down.
Setting temperature is not
appropriate.
Check the setting temperature.
Refrigeration unit does not work.
Stop operation and contact your
local dealer or closest customer
service center.
Fan for refrigeration unit does not
work.
Gas is leaking.
The unit is cooled down poorly.
Gas is leaking.
Fan for refrigeration unit does not
work.
Dirt adheres to the filter of
refrigeration unit.
Clean the filter.
（
Refer to the section “Maintenance
and checkup”)
Cool water does not circulate.
Valve for adjusting discharge
volume is closed.
Open the valve for adjusting
discharge volume.
Dirt adheres to the strainer of
low temperature circulation bath.
Remove the dirt.
Air is sucked in.
Remove drain stopcock and make
sure that cool liquid flows, then
attach the stopcock again. Turn on
and off pump switch two or three
times to release the air.
