– 74 –
Check
code
Outdoor
LED display
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[P15]
[Gas leak detection]
Is there gas leak?
Is there refrigerant shortage?
Check temp. sensor.
TD sensor CN603
TS sensor CN600
NO
Open service valve fully.
YES
Correct and replace piping.
YES
Fault part repair.
Recharge refrigerant.
Replace the PMV.
NO
Tro uble
Correct connector.
Sensor trouble → Replace
NO
YES
Is PMV normal?
YES
Check outdoor P.C. board.
Failure → Replace
OK
Is service valve fully opened?
NO
Is there crushed pipe?
YES
Apply radiation grease
to objective, retightening
of screw
NO
Remove blocking matter,
Short circuit improvement
YES
NO
[P07]
[Heat sink overheat trouble]
Is there any looseness in the screw
stop of the motor drive element
IC200 of the outdoor P.C. board,
the sub heat sink, and the diode bridge?
Are radiation grease properly applied?
Does something block the
ventilation around the heatsink?
Does something block air flow
from the fan?
(Short circuit etc.)
Check outdoor P.C. board.
Failure → Replace
* When replacing outdoor P.C.board, replace
the fuse.
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