【Check 4】 Resistance of the Compressor. （Fig.4)
◇Checking points
Remove two pin couplers at input cord, and check.
(Ambient temp 25℃)
Test result
Judge
Approx. 1.6 Ω
Normal
∞Ω
Broken
※3 Use tester: Digital multimeter (HIOKI (DT4251))
【Check 5】 Resistance of the EVA. Thermistor. （Fig.4)
◇Checking points
Remove the two pin couplers from power supply, and
test.
(Ambient temp 25℃ to -16℃)
Test result
Judge
Approx. 2 kΩ - 10 kΩ
Normal
∞Ω
Broken
0Ω
Short Circuit
※ When short circuit, compressor runs continuously.
【Check 6】 Resistance of the Registor Variable. （Fig.6)
◇Checking point
Remove six pin coupler.
Check the resistance at between terminals
brown and black.
※Resistance value changes in the dial position.
0Ω
Judge
Normal
Broken
Short Circuit
11
∞Ω
0Ω
Coil of compressor is short
circuit
6. CHECK POINT
＆
CHECK METHOD
Test result
Dial position OFF - 5
Approx. 15kΩ - 5kΩ
Fig.5
BROWN
BLACK
OFF
MAX 5
Fig.6
Replacement of only the EVA. thermistor can not.
It will be the exchange of the cooling system.
WORK TIPS
Fig.4
※
３
INPUT CORD
