Compressor running 
abnormity 
★  ■  □  *   
Overhigh discharging 
temperature protection 
■  ★  ■  *   
AC current protection  ★  ★  ■  *   
DC current protection  ★  ★  □  *   
Insufficient current 
protection 
■  ★  □  *   
Outdoor control board 
temperature protection 
■  ★  ★  *   
Module temperature 
rising protection 
□  ★  ★  *   
High-load protection  ★  ★  ★ *     
CT wiring disconnected 
protection 
★  ■  ★  *   
*    
EEPROM abnormity 
★  □  ★ 
 *   
Note: 
□: Lightening 
★: Flashing 
■: Blackout 
* Indicating that this function 
is provided. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
For the appeared abnormal phenomena, please refer to the following table for trouble analysis and troubleshooting: 
31
Model:
HSU-09H03/(BP)1
HSU-12H03/(BP)1Domestic Air Conditioner