9-8
Samsung Electronics
Error Mode
Communication error
Display
Check Method
Communication between wired remote control and ventilator continues to fail for longer than two minutes.
Cause
OPTION setup, PCB check or replacement
Sensor SPEC.
Communication F3, F4
9-4-6 Wired Remote Control Communication Error
+0.7V
-0.7V
G
oo
d
B
ad
Check number of ventilators
connected at the time of tracking.
Check the first SEGMENT of PCB display
of ventilators connected with wired
remote control, in order to find out
“U” flickers.
Check communication line and
connector of ventilator of
which “U” does not flicker.
Then replace PCB.
Yes
아니오
Number of ventilators connected
at the time of tracking is indicated?
Is voltage of the 2 lines square wave of over
DC±0.7V as seen in the picture below?
No
E601 code appears when unit operation
starts or while it is in operation.
Start retracking with pressing both Wind Strength
Control Button and Operation Selection Button of
Wired Remote Control simultaneously for 5 seconds.
Eliminate communication line between
Wired Cemote Control and Ventilator. Measure
2 lines of Wired Remote Control with SCOPE.
Reconnect communication line between wired
remote control and ventilator. Eliminate all
communication connectors on PCB and connect
them again one by one. Find out the ventilator
interrupting communication and check its lines.
Then, replace PCB.
Yes
Check wired remote control
PCB communication line and
connector and replace PCB.
No
SUB PBA Reassembly.
No
Check the correct connection of SUB PBA.
Yes
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