Check Point 1 : Check Connection
p Check terminal connection of Compressor (loose or incorrect wiring)
Check Point 2 : Check Winding Resistance
p Check winding resistance of each terminal
If the resistance value is 0 or infinite, replace Compressor.
(Check again after several minutes because the protector may be
operated.)
SERVICE PARTS INFORMATION 2
Constant Speed Compressor
U(RED)
V (WHITE)W
(BLACK)
Terminal cover opened
terminal
Magnetic relay
p Check connection of magnet relay (Loose or incorrect wiring)
Resistance
Value (20°C)
2.149
U
V
W
Attention!!
The constant speed compressor is equipped with a
protector. It detects the inside temperature and the
current value, and if it detects an over current or too
high temperature, the protector is operated to stop
operation of Compressor. (Protector operates within
the range in the following graph, and it is released
when the temperature becomes lower than approx.
80 °C.
protector
180
150
120
90
60
0 5 10 15 20 25 30
TEMP (°C)
CURRENT (A)
Protector operation range
Check Point 3 : Check Cause of Protector Operation
p Due to unstable power supply, Compressor is causing an abnormally high temperature.
>> Check Power Voltage once again.
p Due to missing phase, Compressor is causing an abnormally high temperature.
>> Check loose or open connection cable once again.
p Due to less refrigerant, the cooling effect inside Compressor is decreased.
>> Check if there is a gas leak or less refrigerant.
RED
WHITE BLACK
RED
WHITE
BLACK
compressor
06-89
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