Product specifications
Troubleshooting
Samsung Electronics 49
Error Mode
E201, E202
Symptom
Communication error between the Control KIT and outdoor unit for two minutes
Failure
Communication error between the Control KIT unit and outdoor unit
4-3-8 Communication error after finishing Tracking(Hydro unit)
No
Yes
No
Yes
Is there a response from the Control KIT PCB?
(LED01 (RED) is not ON)
In this case, is the
voltage waveform between the lines square
wave with amplitude over ±0.7V as shown
in the following picture?
+0.7V
-0.7V
Good
Bad
Check the communication cable and
replace the Control KIT unit PCB
Remove the communication cable
connecting the outdoor unit to Control KIT unit,
and measure the signal on LINE 2 of the outdoor
unit with a scope
Reconnect the cable connecting
the outdoor unit to the Control KIT unit
and restart the unit.
If the communication still doesn’t work,
replace the Control KIT unit PCB.
Check the communication
cable in the outdoor unit PCB
and replace the PCB
LED900
5&0+;*$B60B(B$BLQGG