25
Alarm & Safety
Situation
Indication
Buzzer
Safety operation
Door heater
abnormality
If the door heater or the door heater
relay goes open circuit.
E14 is displayed alternately
with the temperature on the
digital temperature
indicator.
Intermittent tone
Remote alarm
Sensor box heater
abnormality
If the sensor box heater or the sensor
box relay goes open circuit.
E15 is displayed alternately
with the temperature on the
digital temperature
indicator.
Intermittent tone
Remote alarm
Disconnection of
sensor for each
heater
If the relay of main heater, bottom
heater or sensor box heater goes open
circuit.
E16 is displayed alternately
with the temperature on the
digital temperature
indicator.
Intermittent tone
Remote alarm
Air pump (for sample
air or auto-zero)
failure
If the air pump (sampling or auto zero)
does not operate, or if there is
something wrong in the gas piping.
E17 is displayed alternately
with the temperature on the
digital temperature
indicator.
Intermittent tone
Remote alarm
Low humidifying
water
If the water in the water reservoir is
about 5 liters.
Water level alarm lamp
blinks.
----- Bottom
heater
OFF
UV lamp failure
[when MCO-80UVS is installed]
When the UV lamp does not light in 30
seconds after the door is closed.
E18 is displayed alternately
with the temperature on the
digital temperature
indicator.
Intermittent tone
Remote alarm
Flange heater
abnormality
If the flange heater or the flange
heater relay goes open circuit.
E19 is displayed alternately
with the temperature on the
digital temperature
indicator
Intermittent tone
Remote alarm
Glass frame heater
abnormality
If the glass frame heater or the glass
frame heater relay goes open circuit.
E20 is displayed alternately
with the temperature on the
digital temperature
indicator.
Intermittent tone
Remote alarm
Water sensor (level)
abnormality
If the water sensor of water level goes
open circuit or short circuit.
E21 is displayed alternately
with the temperature on the
digital temperature
indicator.
Intermittent tone
Bottom heater OFF
Remote alarm
Water sensor
(standard
temperature)
abnormality
If the water sensor of standard
temperature goes open circuit or short
circuit.
E22 is displayed alternately
with the temperature on the
digital temperature
indicator.
Intermittent tone
Bottom heater OFF
Remote alarm
Door alarm
When the outer door is open.
Door lamp lights.
-----
Fan stops.
• The buzzer can be canceled by pressing the alarm buzzer stop key (BUZZER), but the remote alarm
cannot be silenced.
• Once upper limit temperature alarm is activated, the over heat lamp will remain blinking even after the
temperature is resumed. Press the upper limit alarm reset key (RESET) to cancel the lighting.
• E01 is cleared automatically when the gas is connected correctly and the buzzer is silenced with the
alarm buzzer stop key (BUZZER). When MCO-80GC is installed, press the alarm buzzer stop key
(BUZZER) to silence the alarm after changeover of gas supply line.
• When any of the error from E05 to E17 (except for upper limit temperature alarm activating situation of
E12, E13, and E14) is displayed, consult with our sales representative or agent.
