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The upper CIRCUIT reads REFRIGERATOR temperature and DEF-SENSOR temperature for defrosting into MICOM.
OPENING or SHORT state of each TEMPERATURE SENSOR are as follows.

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Refrigerator Sensor

POINT

Voltage

0.5 V ~ 4.5 V

0 V

5 V

Defrosting Sensor

POINT

Voltage

A

B

Freezer / Refrigerator Door

CLOSED

OPEN

5 V

0 V

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➧

Table of Temperature Compensation by adjusting the resistance (Difference with the current temperature)

E.g.) If the refrigerator compensation resistance (RCR1) is changed from 10K (the current resistance) to 18K 

(the adjustment resistance), the temperature of the refrigerator rises +1 °C.

180 K

Ω

+2.5 °C

Compensation by

56 K

Ω

+2.0 °C

raising the 

33 K

Ω

+1.5°C

temperature

18 K

Ω

+1.0 °C

12 K

Ω

+0.5 °C

10 K

Ω

0 °C

Standard Temperature

8.2 K

Ω

-0.5°C

Compensation by

5.6 K

Ω

-1.0°C

lowering the

3.3 K

Ω

-1.5 °C

temperature

2 K

Ω

-2.0 °C

470 

Ω

-2.5 °C

➧

The circuit shown above is to determine whether a function control key on the operation display is pushed and to turn on
the corresponding function indication LED. The drive type is the scan type.

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