Troubleshooting
4-14 Samsung Electronics
Error Mode
Cause Measures
Product operation with error
Diagnosis method
Operation Defrost Timer Filter
Outdoor heat exchanger
compressor
Outdoor heat exchanger fan Indoor heat exchanger fan
X X X
Power reset -
Operation-off Operation-off Operation-off -
X X X
Error of room temperature sensor in the indoor unit (Open/Short)
• Check indoor temperature sensor connection.
• Check indoor temperature sensor’s resistance value to see if it’s short/open.
Operation-off Operation-off Operation-off -
X X
Error of heat exchanger IN/OUT sensor in the indoor unit (Open/Short)
• Check EVA IN/OUT sensor connection.
• Check EVA IN/OUT sensor’s resistance value to see if it’s short/open.
Operation-off Operation-off Operation-off -
X X X
Error of fan motor in the indoor unit
• Check the connection of motor connector
• Check the speed of the motor fan
Operation-off Operation-off Operation-off -
X X
Error of the outdoor temperature sensor
Error of the condenser temperature sensor
Error of the discharge temperature sensor
• Check indoor temperature sensor connection.
• Check indoor temperature sensor’s resistance value to see if it’s short/open.
Operation-off Operation-off Operation-off -
X X
No communication for 2 minutes between indoor and outdoor unit
(communication error for more than 2 minutes)
• Check connection between indoor and outdoor heat exchangers’
communication cables
Operation-off Operation-off Operation-off -
X
Error of outdoor unit
• Check error occurred with outdoor heat exchanger.
• TERMINAL Block thermal FUSE error.(OPEN)
Operation-off Operation-off Operation-off -
X X
Detection of the float switch
• Check float switch connection.
• Check whether the drain has been filled with water.
Operation-off Operation-off Operation-off -
EEPROM error
EEPROM option error
• Check if there is damage with EEPROM component.
• Check the indoor model to set the options.
• Inspection for match between indoor and outdoor machine models
Operation-off Operation-off Operation-off -
X
Outdoor valve clogging error.
• High pressure check valve clogging.
Operation-off Operation-off Operation-off -
X X
MDS (Motion Detecting Sensor) Error
• Check MDS
- - - -
X
Error due to connecting outdoor units
that do not support the Wind-Free function
• Check outdoor main PBA S/W Check outdoor EEPROM
- - - -
: On : Blink X : Off
4-2-3 Four directions cassette type
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