Troubleshooting - Samsung GH052EAM Service Manual

4. Troubleshooting

Detection of errors
If an error occurs during the operation, one or more 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.
4-1 LED Display on the indoor unit
Abnormal conditions
Power reset
Error of temp. sensor in indoor unit
(OPEN/SHORT)
Error of heat exchanger sensor in indoor unit
Error of outdoor temp. 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 the mismatching of the
communication numbers and installed
numbers after completion of tracking.(communi-
cation error for more than 2 minutes)
Communication error between indoor units
Self-diagnostic error
(including the indoor unit not detected)
1. Error of electronic expansion valve close
2. Error of electronic expansion valve open
3. 2nd detection of high temp. COND
4. 2nd detection of high temp.
DISCHARGE
5. Error of reverse phase
6. Compressor down due to 6th detection of
freezing
Error of float switch
Error of setting option switches for optional
accessories
EEPROM error
EEPROM option error
- If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
- If you re-operate the air conditioner, it operates normally at first, then detect an error again.
Samsung Electronics
Indicators
Green
Red
Operating
Displayed on appropriate indoor unit
which is operating
Displayed on appropriate indoor unit
which is operating
Displayed on appropriate indoor 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 which is operating
Displayed on appropriate indoor unit
which is operating
Displayed on outdoor unit
: On : Flickering : Off
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