Samsung AC009BNLDCH Service Manual page 242

Troubleshooting
Error code [indoor] (Cont.)
■ 4Way CST : AC***BN4DCH
Simple Display
On/Off Defrost Timer Filter
Error Mode
Operation Defrost Timer Filter
X X X Power reset
X X X Error of room temperature sensor in the indoor unit (Open/Short)
X X Error of heat exchanger IN/OUT sensor in the indoor unit (Open/Short)
X X X Error of fan motor in the indoor unit
Error of the outdoor temperature sensor
X X Error of the condenser temperature sensor
Error of the discharge temperature sensor
No communication for 2 minutes between indoor and outdoor unit
X X
(communication error for more than 2 minutes)
X Error of outdoor unit
X X Detection of the float switch
EEPROM error
EEPROM option error
X Outdoor valve clogging error.
X X MDS (Motion Detecting Sensor) Error
Error due to connecting outdoor units
X
that do not support the Wind-Free function
4-48
Cause
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• Check indoor temperature sensor connection.
• Check indoor temperature sensor's resistance value to see if it's short/
open.
• Check EVA IN/OUT sensor connection.
• Check EVA IN/OUT sensor's resistance value to see if it's short/open.
• Check the connection of motor connector
• Check the speed of the motor fan
• Check indoor temperature sensor connection.
• Check indoor temperature sensor's resistance value to see if it's short/
open.
• Check connection between indoor and outdoor heat exchangers'
communication cables
• Check error occurred with outdoor heat exchanger.
• TERMINAL Block thermal FUSE error.(OPEN)
• Check float switch connection.
• Check whether the drain has been filled with water.
• 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
• High pressure check valve clogging.
• Check MDS
• Check outdoor main PBA S/W Check outdoor EEPROM
Measures
Outdoor heat exchanger
compressor
Operation-off
Operation-off
Operation-off
Operation-off
Operation-off
Operation-off
Operation-off
Operation-off
Operation-off
Operation-off
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-
Product operation with error
Outdoor heat exchanger fan Indoor heat exchanger fan
Operation-off Operation-off
Operation-off Operation-off
Operation-off Operation-off
Operation-off Operation-off
Operation-off Operation-off
Operation-off Operation-off
Operation-off Operation-off
Operation-off Operation-off
Operation-off Operation-off
Operation-off Operation-off
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- -
Samsung Electronics
Diagnosis method
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: On / : Blink / X : Off