OPERATING INSTRUCTIONS

I Alarm, Safety function and Self diagnostic function

This unit has the alarm and safety functions shown in Table 3 and Table 4, and also a self diagnostic function.

Table 3 Alarm and safety functions (MPR-311 H))

Alarm or safety

 

Situation

Indication

Buzzer

 

Safety operation

High temp. alarm

The chamber temp. is

High temp. alarm lamp is

Pulse tone

~----

 

more than about 20°C.

lit.

 

 

 

Low temp. alarm

The chamber temp. is less

Defrost lamp is lit.

Pulse tone

-----

 

than about _2°C.

 

 

 

 

 

 

 

 

 

 

 

Note: The alarm buzzer can be canceled by turning the buzzer switch to OFF.

 

Table 4

 

Alarm and safety functions (MPR-311 D(H), MPR-311 DR(H))

 

 

 

 

Alarm or safety

 

 

Situation

Indication

 

Buzzer

Safety operation

 

High temp. alarm

The chamber temp. is

Temperature display is

 

Pulse tone

 

 

 

 

 

more than 15°C.

fiashed.

 

 

-----

 

 

 

 

The chamber temp. is

High temp. alarm lamp is

 

Pulse tone

 

 

 

 

 

more than about 20°C.

lit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low temp. alarm

The chamber temp. is less

All digits on the temp.

 

Pulse tone

 

 

 

 

 

than DOC.

display are flashed.

 

 

-----

 

 

 

 

The chamber temp. is less

Defrost lamp is lit.

 

Pulse tone

 

 

 

 

 

than about _2°C.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Door alarm

When the door is opened.

Door check lamp is lit.

 

Pulse tone after

----

 

 

 

 

 

 

 

 

 

 

 

 

 

delay of 30 seconds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermal sensor

If the thermal sensor is

E1 and chamber temp. is

 

Pulse tone

Running with

 

abnormality

disconnected.

displayed alternately.

 

 

defrost sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If the thermal sensor is

E2 and chamber temp. is

 

Pulse tone

Running with

 

 

 

 

short circuited.

displayed alternately.

 

 

defrost sensor

 

 

 

 

If the defrost sensor is

E3 and chamber temp. is

-----

---

 

 

 

 

disconnected.

displayed alternately.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If the defrost sensor is

E4 and chamber temp. is

-----

----

 

 

 

 

short circuited.·

displayed alternately.

 

 

 

 

Note:

The alarm buzzer can be canceled by turning the buzzer switch to OFF.

 

13

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Sanyo MPR-311D(H) instruction manual Alarm, Safety function and Self diagnostic function

MPR-311D(H) specifications

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