Samsung AC026JNNCEH - Items to Check before Diagnostics; Four Directions Cassette Type

Samsung Electronics
Error Mode
Cause Measures
Product operation with error
Diagnosis method
Operation Defrost Timer Filter
Outdoor Unit
compressor
Outdoor Unit
fan
indoor Unitheat
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 page 4-17
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 page 4-18
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 page 4-19
X X
Error of the outdoor temperature sensor
Error of the condensor temperature sensor
Error of the discharge temperature sensor
• Check outdoor temperature sensor connection.
• Check outdoor 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 unit communication cables operation-off operation-off operation-off page 4-20
X
Error of outdoor unit • Check error occurred with outdoor unit. 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 page 4-21
X EEPROM error • Check if there is damage with EEPROM component. operation-off operation-off operation-off page 4-22
EEPROM option error
• Check the indoor model to set the options.
• Inspection for match between indoor and outdoor machine models
operation-off operation-off operation-off -
X X
MDS-kit error
-.Check the wire connection
-. Check the MDS-KIT
-.Check the indoor PBA
operation-on operation-on operation-on page 4-49
4-2 Items to check before diagnostics
4-2-1 Four directions cassette type
4-9
: On : Blink X : Off