Troubleshooting For Outdoor Unit - Samsung AC036JB1DEC Service Manual

4-3-5 Troubleshooting for outdoor unit

No. Error Code
1 E121 Error on room temperature sensor of indoor unit (Short or Open)
2 E122 Error on EVA IN sensor of indoor unit (Short or Open)
3 E123 Error on EVA OUT sensor of indoor unit (Short or Open)
4 E153 Error on float switch (2nd detection)
5 E154 Indoor fan error
6 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
7 E201
unit) 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
8 E202 (When there is no response from indoor units after tracking is
completed)
"Communication error between outdoor unit inv - main micom
9 E203
when compressor is turned on)"
10 E221 Error on outdoor temperature sensor (Short or Open)
11 E231 Error on outdoor COND OUT sensor (Short or Open)
Error on discharge temperature sensor of compressor 1 (Short or
12 E251
Open)
13 E320 Error on OLP sensor (Short or Open)
14 E403 Compressor down due to freeze protection control
15 E404 System stop due to overload protection control
16 E416 System stop due to discharge temperature
17 E422 Blockage detected on high pressure pipe
18 E425 Reverse phase or open phase
Heating operation restricted at outdoor temperature over
19 E440
Theat_high value (default: 30 C)
Cooling operation restricted at outdoor temperature below
20 E441
Tcool_low value (default: 0 C)
21 E458 Fan speed error
22 E461 Error due to operation failure of inverter compressor
23 E462 System stop due to full current control
4-22
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Meaning Remarks
Indoor unit Room Thermistor Open/Short
Indoor unit EVA_IN Thermistor Open/Short
Indoor unit EVA_OUT Thermistor Open/Short
Indoor unit Float Switch Open/Short Drain
Pump operation Check.
Check on indoor unit indoor Fan oper-
ation
Thermal Fuse Open Check of indoor unit
Terminal Block
Check indoor quantity setting in out-
door
Check electrical connection and set-
ting between indoor unit and outdoor
unit
Check electrical connection and set-
ting 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 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.
HEATING
COOLING
FAN1 ERROR
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Samsung Electronics