Troubleshooting; Display And Check Method; Indoor Unit - Samsung AR07CSDAFWKN Service Manual

4. Troubleshooting

4-1 Display and Check Method

4-1-1 Indoor unit

■ AC***BN1DCH
Abnormal conditions
Power reset
Error of temperature sensor in the indoor unit (Open/
Short)
Error of heat exchanger sensor in the indoor unit
Error of the outdoor temperature sensor Error of the
condensor temperature sensor Error of the discharge
temperature sensor
1. No communication for 2 minutes between indoor
units (Communication error for more than 2
minutes)
2. Indoor unit receiving the communication error from
outdoor unit
3. Outdoor unit tracking 3 minutes error
4. When sending the communication error from
the outdoor unit, the mismatching of the
communication numbers and installed numbers
after completion of tracking. (Communication error
for more than 2 minutes
1. Error of electronic expansion valve open
2. 2'nd detection of high temperature cond
3. 2'nd detection of high temperature discharge
4. Error of reverse phase
5. Compressor down due to 6th detection of freezing
Detection of the float switch
EEPROM error
EEPROM option error
Error on indoor fan motor (E154)
Outdoor valve clogging error
Error due to connecting outdoor units that do not
support the WindFree function
: On : Flickering x: Off
• If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
Samsung Electronics
LED lamp display
Operation
Defrost Timer
Yellow
Blue
X
X X
X
X
X X
X X
X X
X X
X
Filter
Fan
reset
X X X
X X
X X
X X
X
X
X X
X
X X
Troubleshooting
Remarks
1. Indoor unit
error (Display
is unrelated
with operation)
2. Outdoor unit
error (Display
is unrelated
with operation
4-1