Sinclair SCV-50EA - Page 84

P6: IPM Module protection

LED dis
p
la
y
s P6
IPM module
p
rotection
Check whether P-N voltage on the IPM module
is OK. The DC voltage is from 277 to 356V.
NO
Check whether the input power is
correct. The power is 220-240V, 1N,
50Hz.
NO
Adjust to the right range.
Then check whether the
system runs normally.
YES
Check whether power
wiring is connected
correctl
y
and firml
y
.
NO
Connect firmly again and
check whether it is
connected ri
g
ht.
NO
YES
NO
Check whether the output voltage of
single-phase bridge rectifier is within
277-356V
NO
Replace rectifier.
YES
Check if it is connected
normally before entering bridge
rectifier . If wire body terminal is
connected firmly.
NO
Connect wire correctly..
YES
Check if wiring connection
between DC filter and IPM module
is fasten or not.
YES
Check whether wiring
connection of the compressor
is connected right and firmly.
YES
Replace IPM module and
check whether the system
can operate normally or not..
NO
Replace main PCB and check
whether the system can
operate normally or not.
YES
Solve the
malfunction.
NO
Replace compressor and check
whether the system can
operate normally or not.
Connect firmly
again and check
whether it is
connected
correctl
y
.
NO
Connect well again
and check whether
it is connected
correctly.
NO
YES
Solve the problem
NO
NO
YES
Solve the
malfunction.
YES
Check the fuse on the power
board is normal or not.
NO
Replace the
same model
fuse.
YES
Replace the main PCB.
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