
No.  | Error  | Meaning  | Remarks  | |
Code  | ||||
16  | E251  | Error on discharge temperature sensor of  | Check Discharge sensor Open / Short  | |
compressor 1 (Short or Open)  | ||||
17  | E320  | Error on OLP sensor (Short or Open)  | Check OLP sensor Open / Short  | |
18  | E346  | Error due to operation failure of Fan2  | Fan2 error  | |
19  | E347  | Motor wire of Fan2 is not connected  | Fan2 error  | |
20  | E348  | Lock error on Fan2 of outdoor unit  | Fan2 error  | |
21  | E353  | Error due to overheated motor of outdoor unit's  | Fan2 error  | |
Fan2  | ||||
22  | E355  | Error due to overheated IPM of Fan2  | Fan2 error  | |
23  | E378  | Error due to overcurrent of Fan2  | Fan2 error  | |
24  | E386  | Fan2 error  | ||
25  | E387  | Hall IC connection error of Fan2  | Fan2 error  | |
26  | E389  | Fan2 error  | ||
27  | E391  | Error due to DataFlash of Fan2  | Fan2 error  | |
28  | E393  | Output current sensor error of Fan2  | Fan2 error  | |
29  | E396  | DC voltage sensor error of Fan2  | Fan2 error  | |
30  | E399  | Heat sink temperature sensor error of Fan2  | Fan2 error  | |
31  | E403  | Compressor down due to freeze protection  | Check Outdoor Cond.  | |
control  | ||||
32  | E404  | System stop due to overload protection control  | Check Comp. when it start  | |
33  | E416  | System stop due to discharge temperature  | -  | |
  | 
  | 
  | 1. Check if the service valve is open  | |
  | 
  | 
  | 2. Check for refrigerant leakage(pipe  | |
  | 
  | 
  | connections, heat exchanger) and  | |
  | 
  | 
  | charge refrigerant if necessary  | |
34  | E422  | Blockage detected on high pressure pipe  | 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  | |
35  | E425  | Reverse phase or open phase  | Check whether 3 phase is reversed or  | |
opened.  | ||||
  | 
  | 
  | ||
36  | E440  | Heating mode restriction due to high air temperature  | Heating  | |
37  | E441 | Cooling mode restriction due to low air temperature  | Cooling  | |
38  | E446  | Error due to operation failure of Fan1  | Fan1 error  | 
INSTALLATION PARTS
English 71