Samsung AC036JB1DEC Service Manual page 63

4-3-4 1 way cassette type
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.
LED lamp display when error is detected
Error LED lamp Display
Operation Defrost
X X
X
X X X
X X
X X
X X
X X X
4-20
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Cause
Breakaway from the room temperature
sensor connector.
X X
Cut the room temperature sensor wire.
Disjoint of the in/out sensor connector
of the indoor heat exchanger.
X X
Cut the in/out sensor wire of the
indoor heat exchanger.
Indoor fan motor is non-operative.
Indoor fan motor is operating
X slowly.
Indoor fan motor operates at an exces-
sive speed.
Disjointed or cut off of outdoor tem-
perature sensor.
Disjointed or cut off of the outdoor
X
sensor of heat exchanger (COND).
Dismounted/cut off of the outdoor
discharge sensor.
Communication error between indoor
units and outdoor units for more than
2 minutes.
3 min. error of the outdoor unit track-
X
ing. (multi-product specification)
Inconsistency between the number
of installed units and communication
units. (multi-product specification)
The detection of secondary high tem-
perature at COND.
(outdoor heat exchanger)
The detection of secondary high tem-
perature at discharge.
Reverse detection error.
Deviation of float sensor connector.
Cut of float sensor wire.
Actions to take
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.
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.
Check if a motor connector has been
dismounted. (CN44. CN73)
Check the fastening of the motor fan.
Check the PCB display window of the outdoor
unit then refer to a breakdown diagnosis.
Check the connection between indoor and out-
door units
Check the settings for indoor Main/RMC address
switch
Check the PCB display window of the outdoor
unit then refer to breakdown diagnosis.
Check the connection between main PCB and
float sensor in the indoor unit.
Turn on Flashing
Samsung Electronics
Turn off