No
Power off
,
then restart the unit
2
minutes
later
Power off,
then restart the unit 2
minutes
later
Adopt shield cable/Shield cable
earthing.
Adopt shield cable
/
Shield cable
earthing.
No
Yes
Correct the connection
.
Correct the connection
.
No
Yes
Remove interference
or
add magnet ring
on power
wire
Remove interference
or
add magnet ring
on power
wire
Yes
Yes
Replace the signal wire
.
Replace the signal wire
.
Yes
Pull out and insert back.
Pull out and insert back.
No
No
Replace indoor
main PCB, is the error
distinguished?
Replace indoor
main PCB,
is the error
distinguished?
Yes
Replace the outdoor main PCB.
Replace the outdoor main PCB.
No
Check whether
there’s any
interference
.
Such as too many lamps
,
power
transformers
?
Or the signal wire
is too long
?
Check
whether
there’s any
interference
.
Such as too many lamps
,
power
transformers
? Or the signal wire
is too long
?
Check whether the signal wire is
shield cable or whether the
shield cable is earthing
?
Check whether the signal wire is
shield cable or whether the
shield cable is earthing?
Check whether the wire is
correct polarity
? P to P,
Q to Q, E
to E?
Check whether the wire is
correct polarity?
P to P, Q to Q, E
to E
?
Check whether the signal wire is
broken?
Check whether the signal wire is
broken?
Check whether the signal wires
insert on PCB well
?
Check whether the signal wires
insert on PCB well
?
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