Trouble
Cause of trouble
Countermeasure
Cooling water does not circulate
Thermal protector of circulation
pump works.
If the cooling liquid is high-
viscosity antifreeze, water it
down or change the liquid to the
one that has low viscosity.
Circulation volume is small.
Replace the circulation nozzle
with the other one that has
smaller diameter.
Replace with the supplied
nozzle that has larger diameter.
Hose is crushed.
Stretch the hose.
Pressure loss of circulation
system is too much.
Reduce the pressure loss.
A
L
A
R
M
IS
A
C
T
IV
A
T
E
D
Alarm for refrigeration unit is
activated.
・
ALARM LED illuminates
・
”A14” blinks.
High-pressure switch for
refrigeration unit or over load
relay holding circuit for
refrigeration unit works.
・
Set the ambient temperature at
35
℃
or lower.
・
If the heat load is out of cooling
capability, reduce the load.
・
Check the fan for refrigeration
unit.
・
Check the power and voltage.
Please make the rating voltage
220V
±
10%
Alarm for disconnection of
temperature sensor is
activated.
・
Alarm LED illuminates
・
”F01” illuminates
The temperature sensor is either
disconnected or short-circuited.
Stop operation and contact your
local dealer or closest customer
service center.
Upper temperature limit alarm
happens.
・
Alarm LED illuminates
・
” A0H” and measured temp.
displayed alternately.
Measured temperature exceeds
the upper limit.
After confirming that the bath
temperature falls below the
measurable range, press the
[Set] key to clear the alarm.
Lower temperature limit alarm
happens.
・
Alarm LED illuminates
・
” A0L” and measured temp.
displayed alternately.
Measured temperature exceeds
the lower limit.
When temperature rises above
the measurable range, press
the [Set] key to clear the alarm.
Power failure recovery alarm
issued
・
Alarm LED ON
・
“A-4” and measured temp.
displayed alternately.
The power was off during the
temperature control under setting
the power recovery function, [on]
or [oFF] and power switch was
on.
Press the [Set] key. Alarm can
be canceled.
Refer to the manual, P.19 and
set up necessary functions.
・
Temperature cannot be
controlled.
・
Abnormal indication
・
Temperature controller is in
abnormal status because of
noise and etc.
・
Ambient temperature exceeds
35
℃
.
・
Change the installation site.
・
Set the room temperature at
35
℃
or lower. If that failure
mode still remains, Stop
operation and contact your
local dealer or closest
customer service center.
Bath internals is frozen at
＋
7
℃
or
higher.
Poor circulation and bath is not
stirred sufficiently because of
pressure loss of piping and etc.
・
Open the valve for adjusting
discharge volume
・
Use antifreeze.
・
Using high-pressure pump is
recommended.
Temperature controller is broken
or refrigeration unit cannot be
stopped.
Stop operation and contact your
local dealer or closest customer
service center.
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