Engel MT60F-U1 - Checking Points ＆ Measurement; Check 1】 Fuse; Check 2】 Input Voltage of the Compressor; Check 4】 Resistance of Thermistor

【Check 1】 Fuse (Fig.1)
◇ Check the resistance of fuse by tester.
Test result Assessment
0Ω Normal
∞Ω Broken
【Check 2】 Input Voltage of the Compressor (Fig.2)
◇Checking point
・Check at 2 pin coupler of Inverter (Fig.2)
or at input terminals of the compressor.
( Should be checked when the compressor is connected )
(Ambient temp 25℃)
Test result Assessment
Approx. AC13～18V Normal
AC 0 V Inverter is broken
Approx. AC13V or lower Compressor is locked
【Check 3】 Check the Resistance at the Coil of
Compressor （Fig.3)
◇Checking point
Remove 2 pin couplers at motor cord, and check.
(Ambient temp 25℃)
Test result Assessment
Approx. 0.84Ω Normal
∞Ω Broken
【Check 4】 Resistance of Thermistor （Fig.4)
◇Checking points
Remove the 3 pin couplers from Inverter, and test.
(Ambient temp 25℃～-16℃)
Test result Assessment
Approx. 2 kΩ～10 kΩ Normal
∞Ω Broken
0Ω Short Circuit
Note ) When short circuit, motor runs continuously.
5. CHECKING POINT ＆ METHOD
0Ω
Coil of compressor is short
circuit
11
FUSE 15A
Fig.1
Fig.2
Fig.3
Fig.4