DC INVERTER U-MATCH AIR CONDITION                                       MAINTENANCE 
 
120
◆Radiator overheat protection 
 
Monitor display 
Mainboard indicator
Radiator overheat 
protection
 
Blink Blink Blink
Bright Blink 
Bright 
If the outdoo
unit is in good
radiation?
 
If the air outlet and return 
air inlet of the outdoor uni
 
is short circuited, it will 
cause the radiating effect to 
become poor. 
If the radiato
blocked? 
If the radiator is dirty o
 
blocked, it will cause the 
radiating effect to become 
poor. 
If IPM module is 
well tightened?
 
If IPM module is no
 
tightened, it will cause the 
module temperature to 
become too high, or even 
burn the module.
If the silicate gel
on IPM module is
uniformly coated? 
If the coating of silicate gel is not 
uniform, it will cause poor radiation to 
the module, or uneven distribution o
 
the temperature, or even burn the 
module as the sensor cannot detec
 
the temperature in some area is too 
high. 
If the silicate gel
coated on IPM
module can meet
the requirements? 
If the coating of silicate 
gel is too thick, it will also 
affect the radiating effect 
or even burn the module.
Please check if the 
sensor is failed, o
 
reinstall the module and 
ti
hten it. 
Record and feed back