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ALARMS, SAFETY, AND SELF-DIAGNOSIS
The incubator supports the following alarms, safety functions, and self-diagnostic functions. If an error
from Err05 to Err19, or Err56 is activated, contact our sales representative or agent.
Table 6 Alarms, safety, and self-diagnosis for culture operations
Alarm or safety
function
Conditions Display
Buzzer
Remote
alarm
Safety
operation
High limit
temperature
alarm
The chamber temperature exceeds the
high limit alarm temperature set value.
“Over Heat” is displayed alternately in
normal characters and reverse video in
the Over heat display.
Continuous
tone
ON Heater
OFF.
Automatic set
temperature
alarm
The chamber temperature is out of the
automatic set temperature alarm
setting range (±1.0
o
C to ±5.0
o
C).
“Warning: High Temp” or
“Warning: Low Temp”
is displayed in the message display field.
Intermittent
tone after set
alarm delay
time (0 min to
15 min) has
elapsed
ON after set
alarm delay
time (0 min
to 15 min)
has elapsed
-----
Automatic set
CO
2
density
alarm
The chamber CO
2
density is out of the
automatic set CO
2
density alarm
setting range (±0.5 % to ±5.0 %).
“Warning: High CO2 Density” or
“Warning: Low CO2 Density” is displayed
in the message display field.
Intermittent
tone after set
alarm delay
time (0 min to
15 min) has
elapsed
ON after set
alarm delay
time (0 min
to 15 min)
has elapsed
-----
Automatic set O
2
density alarm
The chamber O
2
density is out of the
automatic set O
2
density alarm setting
range (±0.5 % to ±5.0 %).
“Warning: High O2 Density” or
“Warning: Low O2 Density” is displayed
in the message display field.
Intermittent
tone after set
alarm delay
time (0 min to
60 min) has
elapsed
ON after set
alarm delay
time (0 min
to 60 min)
has elapsed
-----
Auto-return
On screens other than the Top screen, there
is no key operation for approx. 90 s.
(When the sleep function is ON)
After sleep function is turned ON, there is
no alarm/error and key operation for
approx. 90 s.
(Return to the “Top screen”.)
----- ----- -----
Door alarm
The outer door is open.
“Door: Open” is displayed alternately in
normal characters and reverse video in
the outer door (opening/closing) display.
Intermittent
tone after set
alarm delay
time (1 min to
30 min) has
elapsed
-----
The CO
2
valve and
N
2
/O
2
valve
are closed.
The heater
turns OFF
after 1 min.
Door lock
error
(MCO-170MUVH or when an optional
MCO-170EL is installed)
Outer door is opened when it is auto-
locked by electric lock.
“Err20: Door Lock Failure” is displayed in
the message display field.
Intermittent
tone
ON
UV lamp OFF
CO
2
gas cylinder
empty
The CO
2
density does not increase
when the CO
2
valve is opened.
“Err01: CO2
Gas Empty” is displayed in
the message display field.
-----
N
2
/O
2
gas
cylinder empty
When the N
2
/O
2
valve is opened,
the O
2
density does not decrease
(N
2
gas cylinder is connected).
the O
2
density does not increase.
(O
2
gas cylinder is connected)
“Err02: N2/O2
Gas Empty” is displayed
in the message display field.
-----
Connection
mistake of
CO
2
line and
N
2
/O
2
line
The CO
2
density keeps increasing
when the CO
2
valve is closed.
“Err03: CO2
Gas Connect Abnormal” is
displayed in the message display field.
The CO
2
valve and
the N
2
/O
2
valve are
closed.
Selection
mistake of
N
2
gas and
O
2
gas.
The O
2
density keeps changing into the
opposite direction when the N
2
/O
2
valve is opened.
“Err04: N2/O2
Gas Connect Abnormal” is
displayed in the message display field.
The CO
2
valve and
the N
2
/O
2
valve are
closed.
Chamber
temperature
sensor error
The chamber temperature sensor is
disconnected.
“Err05: Temp Sensor Open”
is displayed in the message display field.
Heater OFF.
The chamber temperature sensor is
short-circuited.
“Err06: Temp Sensor Short”
is displayed in the message display field.
Heater OFF.
Sensor box
temperature
sensor error
The sensor box temperature sensor is
disconnected.
“Err07: CO2 Box Temp Sensor Open” is
displayed in the message display field.
CO
2
valve is
closed.
The sensor box temperature sensor is
short-circuited.
“Err08: CO2 Box Temp Sensor Short” is
displayed in the message display field.
CO
2
valve is
closed.
