Items To Check Before Diagnostics; Four Directions Cassette Type - Samsung AC026MNNDKH Service Manual

4-2 Items to check before diagnostics

4-2-1 Four directions cassette type

Error Mode
Operation Defrost Timer
X X
X X
X
X X
X
X
X
X X
X X
4-10
Cause
Filter
X Power reset
Error of room temperature sensor in the indoor
X
unit (Open/Short)
Error of heat exchanger IN/OUT sensor in the
X
indoor unit (Open/Short)
X Error of fan motor in the indoor unit
Error of the outdoor temperature sensor
X Error of the condensor temperature sensor
Error of the discharge temperature sensor
No communication for 2 minutes between indoor
X and outdoor unit (communication error for more
than 2 minutes)
Error of outdoor unit
Detection of the float switch
X EEPROM error
EEPROM option error
MDS-kit error
-
• Check indoor temperature sensor connection.
• Check indoor temperature sensor's resistance valu
• Check EVA IN/OUT sensor connection.
• Check EVA IN/OUT sensor's resistance value to see
• C heck the connection of motor connector
• C heck the speed of the motor fan
• Check outdoor temperature sensor connection.
• Check outdoor temperature sensor's resistance v
• Check connection between indoor and outdoor u
• Check error occurred with outdoor unit.
• Check float switch connection.
• Check whether the drain has been filled with wate
• Check if there is damage with EEPROM componen
• Check the indoor model to set the options.
• Inspection for match between indoor and outdoo
-.Check the wire connection
-. Check the MDS-KIT
-.Check the indoor PBA
Samsung Electronics
Measures