Samsung IDH1800E Service Manual page 90

EC10 : When the trouble is found on the part related to the fan motor of indoor unit.
Chec point :
- Defect of PCB relay of indoor unit.
- Output of indoor unit Micom
- Indoor fan motor defect
- Defect of PCB IC06 of indoor unit
Is the power source normal? AC220 ~ 240 50Hz
Is the wire harness for motor connection good?
Is the terminal contact of fan motor condenser good?
During the wind control, does it change
to breeze, mild and strong wind?
When changing the wind to breeze,
YES
mild and storing, do RY73, RY74,
Is he output pin of micom high when
selecting each wind control mode?
When selecting the each wind control
mode, is the voltage across the replay of
When selecting each wind control of
micom, are the pin 14 and 15 of indoor
Is the voltage across the indoor unit fan
Check the indoor unit fan motor
Samsung Electronics
YES
NO
RY75 operate?
NO
YES
indoor unit PCB 12V?
YES
unit PCB IC06 low?
YES
AC220 ~ 240V?
YES
and replace
NO
Check the replay part
NO
Normal
NO
Check micom and
replace
NO
Check micom and
replace
NO
Check micom and
replace
NO
Check IC06 and
replace
NO
Replace PCB
Trouble Shooting
and replace
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