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C
h
e
c
k
c
o
d
e
Short circuit protection trouble of
compressor drive device
[A15]
(
H
-
H
W
M
)
Are connections of
compressor lead and reactor
correct?
(Check referring to the Wiring
diagram.)
Does the same trouble occur
in operation without
compressor lead?
C
h
e
c
k
c
o
d
e
n
a
m
e
YES
NO
C
1. IPDU trouble / Wire connection trouble
of H-HWM
. 2
C
o
m
p
e r
s s
o
t r
o r
u
b
e l
3. IPDU P.C. board trouble of
H-HWM
NO
YES
P.C. board of H-HWM.
Check compressor.
– 76 –
a
u
s
e
Correct wiring.
Replace IPDU
(Layer short, etc.)
Failure → Replace
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Troubleshooting
