Service Diagnosis
46
NO
Remove fan motor after
switch off the power and
restart the unit, the LED
1 becomes light or flash.
Fan motor is
damaged. And
replace it with a new
one.
YES
NO
Test the fan motor terminal resistance
between pin 1(310V) and pin 4(0V), or
pin 5(15V) and pin 4(0V) of CN21 are
close to 0mΩ with a universal meter after
switch off the power.
NO
Remove the connection cable between
CN23 of outdoor PCB and CN10 of
module PCB. The LED1 becomes light
or flash.
The outdoor PCB is damaged.
Replace it with a new one.
YES
NO
The module PCB is damaged,
replace it with a new one.
YES
Summary of Contents for 1U50S2SJ2FA-1
Page 11: ...Piping diagrams Domestic air conditioner 4 Piping diagrams 9 EEV EEV...
Page 31: ...Dimensional drawings 8 Dimensional drawings 9 Center of gravity 29 Domestic air conditioner...
Page 63: ...61 Do C omestic air ircuit Diagra conditioner ams r...
Page 64: ...62 Do C omestic air ircuit Diagra conditioner ams r 12 2 Module board circuit diagram...
