14
E04 : O
2
/N
2
connection is faulty
In N
2
display is set in 23% or more, O
2
display is set in 17% or less, when O
2
/N
2
increases 0.5% or more in a minute with more than 75% of O
2
/N
2
valve opened,
“E04” and “Internal temperature” are displayed alternately, and buzzer sounds
intermittently.
E05,E06 : Temp. sensor malfunction (open / short circuit)
Note)
When the micro-computer detects an internal temperature as 0°C or lower, it is
judged as “open circuit” displaying alternately “E05” with PV and sounding
intermittent buzzer.
When the micro-computer detects an internal temperature as +60°C or higher, it is
judged as “short circuit” displaying alternately “E06” with PV and sounding
intermittent buzzer.
(In E05 and E06, displayed PV is different from product’s actual temperature)
E09, E10: Ambient temperature sensor malfunction (open / short circuit)
When the micro-computer detects ambient temp. sensor as 0°C or lower, it is
judged as “open circuit” displaying alternately “E09” with PV and sounding
intermittent buzzer.
When the micro-computer detects ambient temp. sensor as +60°C or higher, it is
judged as “short circuit” displaying alternately “E10” with PV and sounding
intermittent buzzer. At the time heater is turned off.
E11 : CO
2
sensor output voltage is abnormal
When CO
2
sensor box temperature is stable and high or low temperature alarm is
not occurred, it is judged as CO
2
sensor malfunction if CO
2
output voltage is lower
than 1000mV or higher than 4800mV. “E11” and “internal temperature” are
displayed alternately, and buzzer sounds intermittently.
At the time, CO
2
valve is closed.
E12 : Main heater is abnormal
When high temperature alarm is activated, when the main heater is open circuit,
and when the main heater SSR is short circuit, “E12” and an internal temperature
are displayed alternately and buzzer sounds intermittently. An error is not
displayed just after failed because the self-diagnosis for SSR and heater failure is
done only in every 40min or in the power supplied.
(Above description is also applied to E13∼E16)
E13 : Bottom heater is abnormal
When the bottom heater is open circuit, or SSR is short circuit, “E13” and an
internal temperature are displayed alternately, and buzzer sounds intermittently.
E14 : Door heater is abnormal
When the door heater is open circuit, or SSR is short circuit, “E14” and an internal
temperature are displayed alternately, and buzzer sounds intermittently.
E16 : SSR is open circuit
When any SSR of main heater, bottom heater, door heater and CO
2
sensor box
heater is open circuit, “E16” and an internal temperature are displayed alternately,
and buzzer sounds intermittently.
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