88
ALARMS, SAFETY, AND SELF-DIAGNOSIS
The incubator supports the following alarms, safety functions, and self-diagnostic functions. If an error
from Err05 to Err18, Err21 or Err56 is activated, contact our sales representative or agent.
Table 4 Alarms, safety, and self-diagnosis for culture operations
Alarm or safety
function
Conditions Display
Buzzer
Remote
alarm
Safety
operation
High limit
temperature
alarm*
1
The chamber temperature exceeds the
set value of the high limit temperature
alarm.
“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*
2
The chamber temperature is out of the
setting range of the automatic set
temperature alarm (±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
time of alarm
delay (0 min to
15 min) has
elapsed
ON after set
time of alarm
delay (0 min
to 15 min)
has elapsed
-----
Automatic set
CO
2
density
alarm*
2
The chamber CO
2
density is out of the
setting range of the automatic set CO
2
density alarm (±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
time of alarm
delay (0 min to
15 min) has
elapsed
ON after set
time of alarm
delay (0 min
to 15 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
time of door
alarm delay (1
min to 30 min)
has elapsed
-----
The CO
2
valve is
closed.
The heater
turns OFF
after 1 min.
Door lock
error
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.
⸗
⸗
-----
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.
Ambient
temperature
sensor error
The ambient temperature sensor is
disconnected.
“Err09: AT Sensor Open” is displayed in
the message display field.
⸗
⸗
-----
The ambient temperature sensor is
short-circuited.
“Err10: AT Sensor Short” is displayed in
the message display field.
⸗
⸗
-----
CO
2
sensor
error
The Vref or Vgas output voltage for the
CO
2
sensor is abnormal.
“Err11: CO2
Sensor Vref Abnormal” or
“Err12: CO2
Sensor Vgas Abnormal” is
displayed in the message display field.
⸗
⸗
CO
2
valve is
closed.
Main heater
error
Main heater burnout occurs or the main
heater SSR is short-circuited.
“Err13: Main Heater Abnormal” is
displayed in the message display field.
⸗
⸗
-----
Bottom heater
error
Bottom heater burnout occurs or the
bottom heater SSR is short-circuited.
“Err14: Humidity Heater Abnormal”
is displayed in the message display field.
⸗
⸗
-----
Door heater
error
Door heater burnout occurs or the door
heater SSR is short-circuited.
“Err15: Door Heater Abnormal” is
displayed in the message display field.
⸗
⸗
-----
Side heater
error
Side heater burnout occurs or the side
heater SSR is short-circuited.
“Err21: Side Heater Abnormal” is
displayed in the message display field.
⸗
⸗
-----
Sensor box
heater error*
1
a) High limit temperature alarm is activated.
b) The sensor box heater burnout
occurs or the sensor box heater SSR is
short-circuited.
“Err16: CO2 Box Heater Abnormal” is
displayed in the message display field.
⸗
⸗
-----
*1: After a while after the high limit temperature alarm is activated, Err16 (Sensor box heater error) and
Err17 (Heater SSR burnout) are activated.
*2: When the fan motor speed is lowered due to malfunction or its lifespan, these alarms may be activated
because of ununiform distribution of temperature or CO
2
density in the chamber.
