Outdoor Trouble Shooting - Samsung AC052MNMSEH Service Manual

4-2 Outdoor Trouble shooting

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.
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
Error due to repeated address setting(when 2 or more devices has
1 E108
same address within the network)
2 E121 Error on indoor 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)
4 E123 Error on EVA OUT sensor of indoor unit(Short or Open)
5 E153 Error on float switch (2nd detection)
6 E154 RPM feedback error of indoor unit
7 E162 Outdoor unit EEPROM Read/Write error (H/W)
8 E163 Outdoor unit EEPROM Read/Write error (Option)
9 E198 Error on thermal fuse of indoor unit (Open)
"Communication error between indoor and outdoor
10 E201 unit(Installation number setting error repeated
indoor unit address,indoor unit communication cable error)"
"Communication error between indoor and outdoor
11 E202 unit(Communication error on all indoor unit,
outdoor unit communication cable error)"
Communication error on all PBA within the outdoor unit
12 E205
C-Box,communication cable error
E206-C002 : Fan PBA communication error, E206-C003 : INV PBA
13 E206
communication error
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 of compressor 1 (Short or
16 E251
Open)
17 E320 Error on OLP sensor (Short or Open)
18 E346 Error due to operation failure of Fan2
19 E347 Motor wire of Fan2 is not connected
20 E348 Lock error on Fan2 of outdoor unit
21 E353 Error due to overheated motor of outdoor unit's Fan2
22 E355 Error due to overheated IPM of Fan2
23 E378 Error due to overcurrent of Fan2
24 E386 Over-voltage/low-voltage error of Fan2
25 E387 Hall IC connection error of Fan2
26 E389 V-limit error on Fan2 of compressor
27 E391 Error due to DataFlash of Fan2
28 E393 Output current sensor error of Fan2
4-4
Meaning Remarks
Check on repeated indoor unit main address
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 operation
Check Outdoor EEPROM PBA
Check Outdoor EEPROM Data
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 Outdoor sensor Open / Short
Check Cond-Out sensor Open / Short
Check Discharge sensor Open / Short
Check OLP sensor Open / Short
FAN2 error
FAN2 error
FAN2 error
FAN2 error
FAN2 error
FAN2 error
FAN2 error
FAN2 error
FAN2 error
FAN2 error
FAN2 error
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