DC INVERTER U-MATCH AIR CONDITION                                       MAINTENANCE 
 
125
Radiator overheat protection◆  
 
E5 displayed on 
wired controller
Monitor displa
 
Radiator 
overheat 
protection 
Blink Bright 
Bright Bright 
Blink Bright 
Blink Dark 
Blink
 
If the outdoor unit is in 
good radiation? 
If the air outlet and return air 
inlet of the outdoor unit is short 
circuited, it will cause the 
radiating effect to become 
poor. 
I
 the radiator is dirty or 
blocked? 
If the radiator is dirty or 
blocked, it will cause the 
radiating effect to become 
poor. 
Check if the radiator sensor is 
failed or properly inserted 
Record and feed 
back
 
Yes
No
No