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9-3. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is turned on>
Check code
Abnormal point and detection method
Case
Judgment and action
None
—
1
No voltage is supplied to terminal
block (TB1) of outdoor unit.
a) Power supply breaker is
turned off.
b) Contact failure or
disconnection of power
supply terminal
c) Open phase (L or N phase)
2
Electric power is not charged
to power supply terminal of
outdoor power circuit board.
a) Contact failure of power
supply terminal
b) Open phase on the outdoor
power circuit board
Disconnection of connector
TABT or TABS
3
Electric power is not supplied
to outdoor controller circuit
board.
a) Disconnection of connector
(CNDC)
4
Disconnection of reactor (DCL)
5
Disconnection of outdoor noise
filter circuit board or parts
failure in outdoor noise filter
circuit board
6
Defective outdoor power circuit
board
7
Defective outdoor controller
circuit board
1
Check following items.
a) Power supply breaker
b) Connection of power supply terminal block
(TB1)
c) Connection of power supply terminal block
(TB1)
2
Check following items.
a) Connection of power supply terminal block
(TB1)
b) Connection of terminal on outdoor power
circuit board
Check connection of the connector TABT or TABS.
Refer to "9-6. TEST POINT DIAGRAM".
3
Check
connection of the connector (CNDC)
on the outdoor controller circuit board.
Check
connection of the connector CNDC on
the outdoor power circuit board.
Refer to "9-6. TEST POINT DIAGRAM".
4
Check
connection of reactor. (DCL)
Check connection of “L1” and “L2” on the
active filter module. (ACTM)
Refer to "9-6. TEST POINT DIAGRAM".
5
a) Check connection of outdoor noise filter
circuit board. Refer to "9-6. TEST POINT
DIAGRAM".
b) Replace outdoor noise filter circuit board.
Refer to "9-6. TEST POINT DIAGRAM".
6
Replace outdoor power circuit board.
7
Replace controller board (When items
above are checked but the units cannot be
repaired.)
F5
63H connector open
Abnormal if 63H connector circuit is open
for 3 minutes continuously from being
switched on.
63H: High-pressure switch
1
Disconnection or contact failure
of 63H connector on outdoor
controller circuit board
2
Disconnection or contact failure
of 63H
3
63H is working due to defective
parts.
4
Defective outdoor controller
circuit board
1
Check connection of 63H connector on
outdoor controller circuit board.
Refer to "9-6. TEST POINT DIAGRAM".
2
Check the 63H side of connecting wire.
3
Check for continuity of 63H.
Replace high pressure switch if it is defective.
4
Replace outdoor controller circuit board.
OCH465D
