Troubleshooting - Samsung AVMKH020CA0 Installation Manual

Troubleshooting

Detection of errors
If an error occurs during the operation, an LED flickers and the operation is stopped except the LED.
If you re-operate the air conditioner, it operates normally at first, then detect an error again.
LED Display on the indoor unit
LED Display
Abnormal conditions
Power reset
Error of temperature sensor in indoor unit
(OPEN/SHORT)
Error of heat exchanger sensor in indoor unit
Error of heat exchanger OUT sensor in indoor unit
Error of outlet temperature sensor in indoor unit
(OPEN/SHORT): For heat pump models only
Error of mixed operation
Error of indoor fan motor:
Below 450RPM for 15 minutes
Error of outdoor temperature sensor
Error of COND sensor
Error of DISCHARGE sensor
1. No communication for 2 minutes between
indoor unit and outdoor unit (communication
error for more than 2 minutes)
2. Indoor unit receiving the communication
error from outdoor unit
3. Outdoor unit tracking 3 minute error
4. When sending the communication error
from outdoor unit due to the mismatching
of the communication numbers and
installed numbers after completion of
tracking (communication error for more
than 2 minutes)
On Flickering X Off
18
E-
Indicators
Green Red
X X X
X X X
X X
X X
X X X
X X
X X
Operating
X
Displayed on appropriate indoor
X
unit which is operating
Displayed on appropriate indoor
unit which is operating
X
X
Displayed on appropriate indoor
X
unit which is operating
Displayed on appropriate indoor
X
unit which is operating
Displayed on outdoor unit
1. Error of indoor unit: Displayed
on the indoor unit regardless
of operation
2. Error of outdoor unit:
Displayed on the indoor unit
X
which is operating