- 39 -
It can be released by [Clear] key.
When it is released, water supply
action starts soon. Check the water
level of the external tank and
whether the hose includes air, if
water cannot be supplied.
It cannot be released by [Clear] key.
Turn On [Water Supply] key first,
and press [Clear] key to release it.
And supply water into the external
tank.
Or turn ON [Manual Drain] key to
release the alarm.
Trouble
Cause
Measure
A
la
rm
m
e
s
s
a
g
e
i
s
i
n
d
ic
a
te
d
.
Door alarm is
indicated.
- Alarm message
[DOOR] blinking
Chamber fan and
both heaters for
temperature control
and humidification
stop working.
Door is opened during control
operation.
Close the door.
Low level alarm of
water supply tank
is indicated.
- Alarm message
[TANK] blinking
Humidification
control stops.
It occurs when the level of the
internal tank is [Empty] and it is kept
for more than 10 minutes even
though the [Water Supply] key is
turned on,
It occurs immediately when the level
of the internal tank is [Empty] in case
[Water Supply] key is turned off.
(1)
(2)
(1)
(2)
Level sensor failure
of water supply
tank is indicated.
- Alarm message
[TKSN] blinking
Humidification
control stops.
The level sensor of water supply tank
breaks down.
The float switch may malfunction
because of attached algae.
Stop operation immediately
and call your service agent.
Clean the switch by referring to the
chapter [Maintenance and Check-up]
on P.42.
Water supply fault
is indicated.
- Alarm message
[FLW] blinking
Humidification
control stops.
The wick holder and humidification
tray (top/bottom) cannot be filled with
water, although the water supply
pump works.
The pump cannot supply water if the
hose of suction side includes air.
Open the ventilation cover and
squash the hose several times to
remove the air.
Full drain tank
alarm is indicated.
(Optional tank)
- Alarm message
[DTK] blinking
Humidification
control stops.
The optional drain tank is full. (10L)
Drain the water, and press [Clear]
key to release the alarm.
After the alarm is released, the
control operation is continued.
Upper limit fault of
humidity is
indicated.
- Alarm message
[HU2] blinking
Humidification
control stops.
The measured humidity is 100% or
lower than 0% and it is kept for more
than 15 minutes.
(When the measured temperature is
lower than 0
℃
, the humidification
control is out of range, and 0% or
100% is indicated,)
Check the tube connection and the
condition of wet-bulb wick.
The alarm can be released by [Clear]
key.
Overheat alarm is
indicated.
- Alarm message
[OVR] blinking
All controls are
continued.
After the measured temperature
reached to the set-point, it rise 5
℃
or
more than the setting temperature.
This alarm occurs a little later on
when the measured temperature is
within
±
1
℃
range of set temperature.
Wait awhile until the measured
temperature reaches to
±
1
℃
range
of set temperature, immediately after
you set temperature or defrost
operation.
Also, it may occur when the door is
opened or closed, or any obstruction
blocks the ventilation port of chamber.
The alarm indication can be cleared
by [Clear] key.
