If E1 fault has not cleared:
# Check the wiring connection configuration from the indoor to the outdoor units, in accordance to the
wiring diagram attached to the inside of the outdoor units plastic terminal block cover.
# Check the continuity on the “S” communication wire from the indoor units connection point, to the
outdoor units connection point.
# Check the continuity, from one point to the other, of the two “S” wiring connection points on the
outdoor terminal block.
# Check the continuity of the yellow “S” wire & female spade terminal located on the top section of the
outdoor terminal block, to the soldered “S” wiring point on the outdoor main PCB.
#Check the various Earth connection points for correct termination.
“S” communication points on outdoor terminal block.
“S” communication point on main outdoor
PCB.
Indoor terminal block
Page 12 KSSSI90
