Error Code [Outdoor] - Samsung AC018KN4DCH Service Manual

Troubleshooting

4-3-4. Error code [outdoor]

NO Error code
1 E108 Error due to repeated communication address
Error on room temperature sensor of indoor unit
2 E121
(Short or Open)
3 E122 Error on EVA IN sensor of indoor unit (Short or Open)
4 E123 Error on EVA OUT sensor of indoor unit (Short or Open)
5 E143 Motion detection sensor error
6 E153 Error on float switch (2nd detection)
7 E154 Indoor fan error
8 E162 EEPROM error (Hardware)
9 E163 EEPROM option error
10 E198 Error on thermal fuse of indoor unit (Open)
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)
11 E201
Error due to communication traking failure after initial power is
supplied.
(The error occurs regardless of the number of units.)
Communication error between indoor unit and outdoor unit
12 E202 (When there is no response from indoor units after tracking is
completed)
Communication error between outdoor unit inv -
main micom(For PF #4~#6 controller, error will be determined
13 E203
from the time
when compressor is turned on)
14 E221 Error on outdoor temperature sensor (Short or Open)
15 E231 Error on outdoor COND OUT sensor (Short or Open)
Error on discharge temperature sensor
16 E251
of compressor 1 (Short or Open)
17 E320 Error on OLP sensor (Short or Open)
18 E403 Compressor down due to freeze protection control
19 E404 System stop due to overload protection control
20 E416 System stop due to discharge temperature
21 E422 Blockage detected on high pressure pipe
22 E425 Reverse phase or open phase
Remarks
4-22
Remarks
Check on repeated indoor unit main address
Indoor unit Room Thermistor Open/Short
Indoor unit EVA_IN Thermistor Open/Short
Indoor unit EVA_OUT Thermistor Open/Short
Check motion detection sensor
Indoor unit Float Switch Open/Short Drain Pump
operation Check
Check on indoor unit indoor Fan operation
Check the EEPROM PBA
Set the option setting
Thermal Fuse Open Check of indoor unit
Terminal Block
Check indoor quantity setting in outdoor
Check electrical connection and setting between
indoor unit and outdoor unit
Check electrical connection and setting between
indoor unit MAIN PBA - INVERTER PBA
Check Outdoor sensor Open / Short
Check Cond-Out sensor Open / Short
Check Discharge sensor Open / Short
Check OLP sensor Open / Short
Check Outdoor Cond.
Check Comp. when it start
1. Check the refrigerant leakage
2. Relocate the outdoor unit
1. Check if the service valve is open
2. Check for refrigerant leakage
(pipe connections, heat exchanger)
and charge refrigerant if necessary
3. Check if there's any blockage on
refrigerant cycle(indoor unit/outdoor unit)
4. Check if additional refrigerant has
been added after pipe extension
Check whether 3 phase is reversed or opened.