Troubleshooting; Indoor Display Error And Check Method; Indoor Unit Led Lamp Display At Error Detecting - Samsung AC018KNZDCH/AA Service Manual

4. Troubleshooting

4-1 Indoor Display Error and Check Method

■ Error detection and reoperation
● If error occurs during the operation, badness is indicated by LED flickering and all operation is stopped except LED.
● When reoperating by remote control and switch determine the error mode after normal operation.
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Indoor unit LED lamp display at error detecting

LED Display on the receiver & display unit
Abnormal conditions
Power reset.
Error of Room sensor in the indoor unit.(Open/Short)
Error of EVA-IN,EVA-OUT sensor in the indoor unit.
(Open/Short)
Error of Fan motor in the indoor unit.
1. Error of Outdoo.r
2. Thermal Fuse Open Error of Indoor's Terminal Block.
1. Clogging of outdoor's service valve.
2. the refrigerant leakage .
Detection of the float switch.
1. Error of EEPROM.
2. Error of Option setting.
1. Error of Outdoor Temp. sensor.
2. Error of Cond Temp. sensor.
3. Error of discharge Temp. 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 out-
door unit, the mismatching of the communication num-
bers and installed numbers after completion of tracking.
(Communication error for more than 2 minutes)
● : On, ◑ : Flickering, X : OFF
◆ If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
Samsung Electronics
Indicators
Concealed Type
Green Red
Standard Type
X X
X X
X
X X X
X X
X X
X X X
X X
X X
Remarks
X X
X X
X X
X
X
1. Indoor unit error
(Display is unrelated
with operation)
X
2. Outdoor unit error
(Display is unrelated
with operation)
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