Sinclair SCV-50EA Service Manual page 78

E6 malfunction: DC fan motor malfunction
Check whether the power and voltage of the DC
fan motor is normal or not and whether the
voltage between red and black terminal of DC
motor is from 277V to 354V in waiting state.
Check whether the power and voltage of the DC fan
motor is normal or not and whether the voltage between
white and black terminal of DC motor is from 15V in
waiting state.
Whether the outdoor fan will work after the indoor fan
operates for 3 minutes.
LED displays E6
Outdoor unit DC fan cannot work.
Refers to the wiring diagram to check whether
the unit wiring is correct or not.
YES
YES
YES
YES
Replace the main PCB.
NO
Check the voltage
between "+","-" port
NO
of PFC module is within
277-354V.
是
YES
NO
Replace IPM module.
Check
between
and
NO
terminal of the
fan is over 2.4V
76
Connect again.
NO
Replace
module board..
voltage
yellow
YES
black
Replace fan.
NO
PFC