4-14
Samsung Electronics
4-2-4 1 way cassette type
㽞
Error detection and reoperation
1. If an error occurs during operation, the LED flashes to indicate that there is a problem then all operations stop except LED.
2. When resuming operation with remote controller and switch, it determines error mode after normal operation.
㽞
LED lamp display when error is detected
Error LED lamp Display
Cause
Actions to take
Operation
Defrost
X
X
䢻
X
X
•
Breakaway from the room temperature
sensor connector.
•
Cut the room temperature sensor wire.
•
Check the connection between the room tem-
perature wire and the main PCB of the indoor
unit.
•
Check the pattern of the room temperature sen-
sor part of the main PCB of the indoor unit and if
parts are open or shorted.
䢻
X
䢻
X
X
•
Disjoint of the in/out sensor connector
of the indoor heat exchanger.
•
Cut the in/out sensor wire of the
indoor heat exchanger.
•
Check the connection between the room tem-
perature wire and the main PCB of the indoor
unit.
•
Check the pattern of the room temperature sen-
sor part of the main PCB of the indoor unit and if
parts are open or shorted.
X
X
X
䢻
X
•
Indoor fan motor is non-operative.
•
Indoor fan motor is operating
slowly.
•
Indoor fan motor operates at an exces-
sive speed.
•
Check if a motor connector has been
dismounted. (CN44. CN73)
•
Check the fastening of the motor fan.
䢻
X
X
䢻
X
•
Disjointed or cut off of outdoor tem-
perature sensor.
•
Disjointed or cut off of the outdoor
sensor of heat exchanger (COND).
•
Dismounted/cut off of the outdoor
discharge sensor.
•
Check the PCB display window of the outdoor
unit then refer to a breakdown diagnosis.
X
X
䢻
䢻
X
•
Communication error between indoor
units and outdoor units for more than
2 minutes.
•
3 min. error of the outdoor unit track-
ing. (multi-product specification)
•
Inconsistency between the number
of installed units and communication
units. (multi-product specification)
•
Check the connection between indoor and out-
door units
•
Check the settings for indoor Main/RMC address
switch
X
X
䢻
䢻
䢻
•
The detection of secondary high tem-
perature at COND.
(outdoor heat exchanger)
•
The detection of secondary high tem-
perature at discharge.
•
Reverse detection error.
•
Check the PCB display window of the outdoor
unit then refer to breakdown diagnosis.
X
X
X
䢻
䢻
•
Deviation of float sensor connector.
•
Cut of float sensor wire.
•
Check the connection between main PCB and
float sensor in the indoor unit.
ل͑ͫ͑
Turn on
͑͑͑ስ͑ͫ͑
Flashing
͑͑͑Ή͑ͫ͑
Turn off
