3-11
MAIN PARTS
d. If compressor upper part temperature increases excessively, the protection control is activated and
the compressor is stopped according to the following method.
(3) Thermistor for Outdoor Ambient Temperature
The thermistor resistance characteristics are shown in the figure below.
(4) Thermistor for Evaporating Temperature of Outdoor Unit in Heating Operation (For Defrosting)
The characteristics for the thermistor is the same with the value of outdoor ambient temperature
thermistor as shown in the figure below.
0
10
20
30
40
50
60
70
80
-15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60
82
61
46
35
27
20.5
16
12.5
10
8
5.3
3.6
2.5
90
Ambient Temperature (
o
C)
Thermistor
Resistance
(KΩ)
Thermistor Characteristics
Operation Upper Part Temperature of Compressor
Cooling Over 127
o
C 10 minutes (Continuously)
Over 140
o
C 5 seconds (Continuously)
Heating Over 120
o
C 10 minutes (Continuously)
Over 140
o
C 5 seconds (Continuously)
Defrosting Over 120
o
C 5 seconds (Continuously)
Defecting Period
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