HEATING / AIR CONDITIONING  ROOM TEMPERATURE SENSOR  INSPECTION  

1.802,1.115 2.344,0.99 false 1.417,2.896 1.854,2.552 false 0.313,0.333 0.677,0.635 0.365,0.302 10 false *a 2.375,0.896 2.74,1.198 0.365,0.302 10 false *b 0.094,2.688 0.458,2.99 0.365,0.302 10 false *c 1.823,4.365 2.188,4.667 0.365,0.302 10 false *d 1.875,2.438 2.24,2.74 0.365,0.302 10 false *e 0.521,4.167 1.135,4.365 0.615,0.198 10 false (50) 1.031,4.167 1.646,4.365 0.615,0.198 10 false (68) 1.542,4.167 2.156,4.365 0.615,0.198 10 false (86) 2.042,4.167 2.656,4.365 0.615,0.198 10 false (104) 2.573,4.167 3.188,4.365 0.615,0.198 10 false (122) 3.073,4.167 3.427,4.417 0.354,0.25 10 false (140)

*a	Component without harness connected (Cooler (Room Temp. Sensor) Thermistor))
*b	Sensing Portion
*c	Resistance (kΩ)
*d	temperature (°C (°F))
*e	Allowable Range

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	10°C (50°F)	3.00 to 3.73 kΩ
	15°C (59°F)	2.45 to 2.88 kΩ
	20°C (68°F)	1.95 to 2.30 kΩ
	25°C (77°F)	1.60 to 1.80 kΩ
	30°C (86°F)	1.28 to 1.47 kΩ
	35°C (95°F)	1.00 to 1.22 kΩ
	40°C (104°F)	0.80 to 1.00 kΩ
	45°C (113°F)	0.65 to 0.85 kΩ
	50°C (122°F)	0.50 to 0.70 kΩ
	55°C (131°F)	0.44 to 0.60 kΩ
	60°C (140°F)	0.36 to 0.50 kΩ

NOTICE:

·

Hold the sensor only by its connector. Touching the sensing portion may change the resistance value.

·

When measuring, the sensor temperature must be the same as the ambient temperature.

HINT:

As the temperature increases, the resistance decreases (see the graph).

If the result is not as specified, replace the cooler (room temp. sensor) thermistor.