Hitachi RPI-1.0FSG1 - 1.4.2 Test Run Mode by Outdoor Unit

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TROUBLESHOOTING
(g) By touching the - side of the tester to the N terminal
of ISPM and the + side of tester to U, V and W of
ISPM, measure the resistance. If all the resistances
are more than 100 kΩ, it is normal.
(h) By touching the + side of the tester to the N terminal
of ISPM and the - side of tester to U, V and W of
ISPM, measure the resistance. If all the resistances
are more than 1 kΩ, it is normal.
TB3
+
-
RS W
RB
VTU
NPD P
TB2
R216
R215
ZN20
LED201
ZN202
R201
R200
CN207 CN206
CN9
PC207
C
PC208
CN8
RB
N
P
P1
U, V, W
N
TB3
+
-
RS W
RB
VTU
NPD P
TB2
R216
R215
ZN20
LED201
ZN202
R201
R200
CN207 CN206
CN9
PC207
C
PC208
CN8
RB
N
P
P1
U, V, W
N
If item (i) to (m) are performed and the results are
satisfactory, ISPM is normal.
Measure it under 1 kΩ range of a tester.
Do not use a digital tester.
(i) Perform the item (a) to (h).
(j) By touching the + side of the tester to the RB terminal
of ISPM and the - side of tester to P terminal of ISPM.
If the resistance is more than 1 kΩ, it is normal.
(k) By touching the - side of the tester to the RB terminal
of ISPM and the + side of tester to P terminal of ISPM.
If the resistance is more than 100 kΩ, it is normal.
P1 PB
P
N
N
TB3
+
-
RS W
RB
VTU
NPD P
TB2
R216
R215
ZN20
LED201
ZN202
R201
R200
CN207 CN206
CN9
PC207
C
PC208
CN8
RB
N
P
P1
RB
P
TB3
+
-
RS W
RB
VTU
NPD P
TB2
R216
R215
ZN20
LED201
ZN202
R201
R200
CN207 CN206
CN9
PC207
C
PC208
CN8
RB
N
P
P1
RB
P