OPERATING INSTRUCTIONS
Alarm and safety functions
This unit has the alarm and safety functions shown in table below, and also self diagnostic function.
Table 4. Alarm and safety function
Alarm & safety | Situation | Indication | Buzzer | Safety operation | |
High temperature | When the chamber temp. is |
| Intermittent |
| |
| tone with | Remote alarm | |||
approx. 10oC (or 15oC) higher | Alarm lamp blinks. | ||||
alarm | than the set temp. |
| 12 | with 12 min. delay | |
|
| min. delay |
| ||
|
|
|
| ||
Power failure | At power failure |
| Intermittent |
| |
When power cord is | Alarm lamp blinks. | Remote alarm | |||
alarm | tone | ||||
disconnected. |
|
| |||
|
|
|
| ||
Filter check | When the condenser filter | Filter check lamp lights. | |||
is clogged. | |||||
|
|
|
| ||
| When there is no key | Chamber temp. is |
| Finishing of each | |
pressing in each setting | |||||
displayed. | setting mode | ||||
| mode for 90 seconds. |
| |||
|
|
|
| ||
| If the thermal sensor is | Alarm lamp blinks. |
|
| |
| E01 and 50oC is |
| Remote alarm | ||
| disconnected. | displayed alternately. | Intermittent | ||
|
| Continuous | |||
|
| Alarm lamp blinks. | tone | ||
| If the thermal sensor is | operation | |||
| E01 and |
| |||
| displayed alternately. |
|
| ||
|
|
|
| ||
| If the cascade sensor is | Alarm lamp blinks. |
|
| |
| E03 and chamber temp. |
|
| ||
Sensor | disconnected. |
|
| ||
is displayed alternately. | Intermittent | Remote alarm | |||
| |||||
abnormality | If the cascade sensor is | Alarm lamp blinks. | tone | ||
| |||||
| E04 and chamber temp. |
|
| ||
|
|
| |||
| is displayed alternately. |
|
| ||
|
|
|
| ||
| If the filter sensor is | Alarm lamp blinks. |
|
| |
| E05 and chamber temp. |
|
| ||
| disconnected. | Intermittent |
| ||
| is displayed alternately. | Remote alarm | |||
|
| ||||
| If the filter sensor is | Alarm lamp blinks. | tone | ||
|
| ||||
| E06 and chamber temp. |
|
| ||
|
|
| |||
| is displayed alternately. |
|
| ||
|
|
|
| ||
Note： |
|
|
|
|
The filter check lamp sometimes lights at the
Operation after power failure
The set value (setting of chamber temperature and alarm temperature) is memorized by nonvolatile memory. Accordingly, the freezer resumes the operation with setting before power failure.
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