Troubleshooting by Indication on the Remote Controller
305
Troubleshooting
Cool/Heat
selection is unified.
NO
YES
YES
YES
NO
C/H SELECT of
the external
control adaptor
for outdoor unit is
set to “IND”.
Setting of
C/H SELECT of
the external control
adaptor for outdoor
unit is “unified
MASTER”.
YES
NO
The unified
addresses for
COOL/HEAT
within the
outdoor/outdoor
transmission are
duplicated. Set
the address
again.
Setting of
C/H SELECT of
the external control
adaptor for outdoor
unit is “SLAVE”.
NO
YES
Replace the
outdoor unit main
PCB.
Supply the power
to the outdoor
unit.
Replace the
outdoor unit main
PCB.
Check if
the normal
condition monitor LED
for the outdoor unit
main PCB
blinks.
NO
Check
if power is
supplied to the
outdoor unit.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
A
Diagnosis Flow 2
Check of error 3
Check of error 4
