80 
6 times  OFF  EH 61 
Evaporator coil middle temperature sensor T2 is in 
open circuit or has short circuited 
12 times  OFF  EC 07 
The outdoor fan speed is operating outside of the 
normal range 
9 times  OFF  EH 0b  Indoor PCB/Display board communication error 
8 times  OFF  EL 0C  Refrigerant leakage detection 
7 times  FLASH  PC 00 
IPM malfunction or IGBT over-strong current 
protection 
2 times  FLASH  PC 01  Over voltage or over low voltage protection 
3 times  FLASH  PC 02 
Top temperature protection of compressor or High 
temperature protection of IPM module or High 
pressure protection 
5 times  FLASH  PC 04  Inverter compressor drive error 
1 time  FLASH  PC 08  Current overload protection 
7 times  FLASH  PC 03  Low pressure protection 
1 times  ON  --  Indoor units mode conflict   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes:all IDU error code could refer to Hiwall and LC IDU.