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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
The table below list the self-diagnostic routines. For some of error codes, you must contact an authorized service centre.
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 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 E198
Error on thermal fuse of indoor unit (Open) Thermal Fuse Open Check of indoor unit Terminal Block
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 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 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
19 E425
Reverse phase or open phase Check whether 3 phase is reversed or opened.
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Productinformatie
| Merk | Samsung |
| Model | AC048MXQFGC |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 4327 MB |
