Hitachi UTOPIA RAS-4HVRP2E Service Manual page 159

8 Electrical checks of main parts
Inverter
3 Remove all the terminals of the inverter module before check. If all the items (below table) are performed and all
items are satisfied, the inverter module is non-defective.
Test Point
(+) Side of Tester
AC-L1/AC-N
AC-L1/AC-N
L-COM
N
U / V / W
U / V / W
P
N
4 If all the items (below table) are performed and all items are satisfied, the inverter module is non-defective.
Test Point
(+) Side of Tester
L1 / L2
P
L1 / L2
N
157 SMGB0136 rev.0 - 07/2021
Analog Tester Result
(-) Side of Tester
L-COM
N
AC-L1/AC-N
AC-L1/AC-N
P
N
U / V / W
U / V / W
Analog Tester Result
(-) Side of Tester
P
L1 / L2
N
L1 / L2
More than 1k Ohm
More than 100k Ohm
More than 100k Ohm
More than 1k Ohm
More than 1k Ohm
More than 100k Ohm
More than 100k Ohm
More than 1k Ohm
More than 1k Ohm
More than 100k Ohm
More than 5M Ohm
More than 0.5M Ohm
Digital Tester Result
0.5V or smaller
Overload
Overload
0.5V or smaller
0.5V or smaller
Overload
Overload
0.5V or smaller
Digital Tester Result
0.5V or smaller
Overload
Overload
Overload
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