Samsung AC024JXADCH Installation Manual - Troubleshooting
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Troubleshooting
The table below give indication about self diagnostic routine. Some of error code requires activities exclusively for Authorized
Service Center.
Outdoor unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB LED, both MAIN PCB and INVERTER PCB.
No.
Error Code
Meaning
Remarks
1
E108
Error due to repeated communication address
Check on repeated indoor unit main address
2
E121
Error on room temperature sensor of indoor unit (Short or Open)
Indoor unit Room Thermistor Open/Short
3
E122
Error on EVA IN sensor of indoor unit (Short or Open)
Indoor unit EVA_IN Thermistor Open/Short
4
E123
Error on EVA OUT sensor of indoor unit (Short or Open)
Indoor unit EVA_OUT Thermistor Open/
Short
5
E153
Error on float switch (2nd detection)
"Indoor unit Float Switch Open/Short
Drain Pump operation Check"
6
E154
Indoor fan error
Check on indoor unit indoor Fan operation
7
E198
Error on thermal fuse of indoor unit (Open)
Thermal Fuse Open Check of indoor unit
Terminal Block
8
E201
Communication error between indoor unit and outdoor unit
(Pre tracking failure or when actual number of indoor units
are different from the indoor unit quantity setting on the
outdoor unit) Error due to communication traking failure
after initial power is supplied. (The error occurs regardless of
the number of units.)
Check indoor quantity setting in outdoor
9
E202
Communication error between indoor unit and outdoor unit
(When there is no response from indoor units after tracking
is completed)
Check electrical connection and setting
between indoor unit and outdoor unit
10
E203
"Communication error between outdoor unit inv - main micom
(For PF #4~#6 controller, error will be determined from the time
when compressor is turned on)"
Check electrical connection and setting
between indoor unit MAIN PBA - INVERTER PBA
11
E221
Error on outdoor temperature sensor (Short or Open)
Check Outdoor sensor Open / Short
12
E231
Error on outdoor COND OUT sensor (Short or Open)
Check Cond-Out sensor Open / Short
13
E251
Error on discharge temperature sensor of compressor 1 (Short
or Open)
Check Discharge sensor Open / Short
14
E320
Error on OLP sensor (Short or Open)
Check OLP sensor Open / Short
15
E403
Compressor down due to freeze protection control
Check Outdoor Cond.
16
E404
System stop due to overload protection control
Check Comp. when it start
17
E416
System stop due to discharge temperature
-
18
E422
Blockage detected on high pressure pipe
1.
Check if the service valve is open
2.
Check for refrigerant leakage(pipe con-
nections, heat exchanger) and charge
refrigerant if necessary
3.
Check if there's any blockage on refriger-
ant cycle(indoor unit/outdoor unit)
4.
Check if additional refrigerant has been
added after pipe extension