13-3
TROUBLESHOOTING
SM OU12HP 2-E.2 GB
No.
SYMPTOM /
PROBLEM
PROBABLE
CAUSE
CORRECTIVE ACTION
7
Water leakage from
indoor unit
Indoor unit
drainage tube is
blocked
Check and open drainage tube
Outdoor unit
8
Outdoor unit display
board and leds are
off
No power
supply
Check supply voltage to main terminals L and N
with volt meter.
Miss-wiring
Check all supply wiring to controller and
terminals according to wiring diagram
Loose
connection
Check all power wiring connections
Burnt fuse Check fuse on the main board (13.5.8)
If still not OK Replace main board (14.1.13)
9
Compressor does not
start operation
One or some
components are
not operating
well
Check for any fault code shown on display
board and act accordingly (13.4)
Electronics
control problem
or protection
PFC Chock coil Check the PFC Chock coil (13.5.6)
Driver failure
Check if fault code #11, 18, 19 or 26 is
shown on display board. If so, fix the problem
according to (13.5.5) or replace driver (14.1.15).
If still not OK Replace compressor (14.1.10)
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