If the resistance values are okay:
#
Check the five soldered
AC
voltage points located on the underside of the main indoor PCB.
Note:
The following voltage readings were measured when the unit was run in “Cooling mode, with a
set temperature of 17ºC, at High fan speed.
White to Grey =
315
Volts
White to Blue =
287
Volts
White to Yellow =
259
Volts
White to Red =
238
Volts
# If there is no AC voltage at any of these points, replace the main indoor PCB.
AC voltage points on rear of indoor
main PCB.
Side view of AC voltage points & fan motor
connector plug on indoor main PCB.
Page 31 KSSSI90