ALARMS & SAFETY FUNCTIONS
This unit has the alarms and safety functions shown in table below, and also self diagnostic functions.
Alarms and safety functions
Alarm & | Situation | Indication | Buzzer | Safety operation | |
Safety | |||||
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| If the internal temperature |
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Automatic set | deviates from the set | Alarm lamp lights. |
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temperature | temperature by +10°C or more | All digits on the | Intermittent tone | ||
Alarm | (and if timer mode 1, by | indicator flash. |
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| more) |
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| If a key operation is not |
| — | The setting mode | |
Auto return | performed for about 45 sec. in | Normal display mode. | |||
is cancelled. | |||||
| each setting mode. |
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Key lock switch | When the key lock switch is |
| — | Key input is | |
turned ON. |
| disabled. | |||
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Temperature | If the temperature sensor goes | Alarm lamp lights. |
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sensor | E01 is displayed on | Intermittent tone | Heater OFF | ||
open circuit. | |||||
abnormality | the indicator. |
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| Alarm lamp lights. |
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| If the triac goes open circuit. | E02 is displayed on | Intermittent tone | Heater OFF | |
Triac |
| the indicator. |
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abnormality |
| Alarm lamp lights. |
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| If the triac goes short circuit. | E03 is displayed on | Intermittent tone | Heater OFF | |
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| the indicator. |
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| Alarm lamp lights. |
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| If the relay goes short circuit. | E04 is displayed on | Intermittent tone | Heater OFF | |
Relay |
| the indicator. |
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If the relay goes open circuit or |
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abnormality | Alarm lamp lights. |
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fan motor and heater goes short |
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| E05 is displayed on | Intermittent tone | Heater OFF | ||
| circuit. Or the ambient temp, | the indicator. |
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| of circuit is 65°C or more. |
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| (when unit is not running) |
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| The security circuit is activated | Without display |
| Heater OFF | |
| by independent temp, sensor if | Continuous tone | forcedly by | ||
| change. | ||||
| the chamber is abnormal over- |
| external circuit. | ||
Independent |
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heating. |
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(When unit is running) |
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protection |
| Continuous tone |
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The security circuit is activated | Alarm lamp lights. | Heater OFF | |||
| (When the temp, | ||||
| by independent temp, sensor if | E05 is displayed on | forcedly by | ||
| s decreased, | ||||
| the chamber is abnormal over- | the indicator. | external circuit. | ||
| ntermittent tone) | ||||
| heating. |
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*The buzzer tone resulting from the independent
