*1 ON for 0.2 second and OFF for 0.2 second (Blink about 25 times for 10 seconds)
(Normally, ON for 0.4 second and OFF for 0.4 second (Blink about 12 times for 10 seconds))
Match the connection of the
inter-unit wiring and piping
between the indoor and outdoor
units.
NO
Correctly connect inter-unit
wiring between the indoor and
outdoor units.
Recharge a proper amount of
refrigerant after refrigerant
recovery and vacuum drying.
NO
YES
CHECK 10
Check the refrigerant piping
system for clogging.
CHECK 9
Is the refrigerant
level proper?
Correctly connect inter-unit
wiring between the indoor and
outdoor units.
YES
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The phase of inter-unit wiring between
the indoor and outdoor units is
incorrect.
The phase of inter-unit wiring between
the indoor and outdoor units is
incorrect.
NO
Continue
the condition that
the blinking interval of HAP
on outdoor unit PCB is short (*1) for
more than one minute.
YES
Does "UF"
appear when the power
is turned ON?
Is the
connection of
inter-unit wiring and piping
between the indoor and outdoor
units matched?