Troubleshooting
4-16 Samsung Electronics
4-2-4 Outdoor Unit
No. Error Code Meaning Remarks
1 E108 Error due to duplicated 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 E164
Error due to connecting outdoor units that do
not support the Wind-Free function
Check outdoor main PBA S/W, Check
outdoor EEPROM data
8 E201
Communication error between the indoor unit
and outdoor unit (Pre-tracking failure or when
the actual number of indoor units are different
from the indoor unit quantity setting on the
outdoor unit) Error due to communication
tracking 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 the outdoor unit
and main micom (For PF #4 to #6 controllers,
error will be determined from the time when
the compressor is turned on.)
Check electrical connection and setting
between
outdoor 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 starts
17 E407
High Pressure Switch Error or High Pressure
Switch Connector Open
Check Comp Pressure or Check the Connection
of the CN003 on the MAIN-OUT PBA
(Error that only covers an outdoor unit capacity
o
f 7.1 KW or less)
18 E416 System stop due to discharge temperature -
19 E422 Blockage detected on high pressure pipe
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 the
refrigerant cycle (indoor unit/outdoor unit)
4. Check if Additional refrigerant has been
added after pipe extension
To Next Page
Loading...
Need help?
General
