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HOW TO CHECK SYSTEM POWER MODULE
+
+
+
–
–
+
+
–
P1
P2
U
W
V
N1
L2 L1
+
–
+
–
–
+
–
–
P1
P2
U
W
V
N1
L2 L1
Checking system power module using tester
Set tester to resistance range (X 100)
If indicator does not swing in the following conductivity check, the system power module is normal.
(In case of digital tester, since built-in battery is set in reverse direction, + and – terminals are reversed.)
CAUTION
If inner circuit of system power module is disconnected (open), the indicator of tester will not swing and this may
assumed as normal. In this case, if indicator swings when + and – terminals are connected in reverse of diagram
below, it is normal. Furthermore, compare how indicator swings at U, V and W phases. If indicator swings the same way
at each point, it is normal.
Summary of Contents for RAC25NH4
Page 37: ...CIRCUIT DIAGRAM MODEL RAK 25NH4 RAK 35NH4 RAK 50NH4 37 ...
Page 38: ...CIRCUIT DIAGRAM MODEL RAC 25NH4 RAC 35NH4 RAC 50NH4 39 ...
Page 40: ... 42 MODEL RAC 25NH4 RAC 35NH4 RAC 50NH4 MAIN P W B Marking on P W B COMPONENT SIDE ...
Page 90: ... 100 SELF DIAGNOSIS LIGHTING MODE MODEL RAC 25NH4 RAC 35NH4 RAC 50NH4 ...
