【Check １】Fuse (Fig.1)
◇ Check the fuse by Visual confirmation
or check the continuity with a tester.
Continuity check
Judge
YES
Normal
NO
Broken
【Check 2】 Output Voltage of the Power Supply
◇Checking point
・Check at two poles coupler of power supply. (Fig.2)
<Use power DC12V/24V>
(Ambient temp 25℃)
Test result
Judge
Approx. AC15～19V
Normal
AC 0 V
Approx. AC15V less than
【Check 3】 Resistance of the Compressor
◇Checking points
Measured between the terminal of the compressor.
(Fig.3)
(Ambient temp 25℃)
Test result ※1
Judge
Approx. 1.23Ω
Normal
∞Ω
Broken ※2
※1 Tester uses the accuracy 10mΩ or less.
※2 It can not be removed from the cooling system.
Unable to fix.
0Ω
Coil of compressor is
short circuit. ※１
15
5. CHECK POINT
＆
CHECK METHOD
Power Supply is broken
Fig.1
Fig.3
10A FUSE
Normal
Broken
Fig.2
Power Supply
Power Supply
