Seivice diagnosis 
 
  
Domestic air conditioner 
11.4 Error Codes and Description indoor display 
 
Code indication 
fault description 
Reference 
Page 
Indoor 
displaying 
panel code 
indication 
Outdoor 
(LED1 flash 
times) 
Indoor and 
Outdoor 
E7 15 
Communication fault between indoor and 
outdoor units 
Page 53 
 
Indoor Malfunction 
E1  --  Room temperature sensor failure    Page 43 
E2  --  Heat-exchange sensor failure    Page 43
 44 egaP rorre MORPEE roodnI -- 4E
E14  --  Indoor fan motor malfunction  Page 45
 
 
Outdoor 
Malfunction 
F12  1  Outdoor    EEPROM error  Page 44 
F1 
2 
 48 egaP MPI fo noitcetorp ehT
F22 
3  Overcurrent  protection of  AC electricity  
for  the outdoor model 
Page 49
F3 4 
Communication fault between the IPM and 
outdoor PCB 
Page 50 
F19  6  Power voltage is too high or low  Page 51 
F4 8 
Overheat protection for Discharge 
temperature 
Page 52 
F8  9  Outdoor DC fan motor fault   
F21 10  Defrost temperature sensor failure  Page 43
F7  11  Suction temperature sensor failure  Page 43
F6  12  Ambient temperature sensor failure  Page 43 
F25  13  Discharge temperature sensor failure  Page 43
F11  18  deviate from the normal    for the compressor  Page 55
F28  19  Loop  of  the station detect error  Page 55
F2  24  Overcurrent of the compressor  Page 49
F23 25 
Overcurrent protection for single-phase of the 
compressor 
Page 49
E9 
21 High work-intense protection   
 
 
30
Page 46 
Page 56