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10-4. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is put on>
(Note 1) Refer to indoor unit section for code P and code E.
Error Code
Abnormal points and detection method
Case
Judgment and action
None
—
1
No voltage is supplied to termi-
nal block (TB1) of outdoor unit.
a) Power supply breaker is
turned off.
b) Contact failure or disconnec-
tion of power supply terminal
c) Open phase (L or N phase)
2
Electric power is not supplied
to power supply terminal of out-
door power circuit board.
a) Contact failure of power
supply terminal
b) Open phase on the outdoor
power circuit board
(Disconnection of terminal
on outdoor power circuit
board)
3
Electric power is not supplied
to outdoor controller circuit
board.
a) Disconnection of connector
(CNDC)
4
Disconnection of reactor (ACL)
5
Defective outdoor power circuit
board
6
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.
3
Check
connection of the connector (CNDC)
on the outdoor controller circuit board.
Check
connection of the connector, LD1
and LD2 on the outdoor power circuit board.
Refer to 10-9.
4
Check
connection of reactor. (ACL)
Check connection of “LO” and
“NO” on the outdoor noise filter circuit board.
Check connection of “R” and “S” on the
outdoor power circuit board.
Refer to 10-9.
5
Replace outdoor power circuit board.
6
Replace controller board (When items
above are checked but the units can not be
repaired.)
F5
(5201)
63H connector open
Abnormal if 63H connector circuit is open
for 3 minutes continuously after power sup-
ply.
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 10-9.
2
Check the 63H side of connecting wire.
3
Check continuity by tester.
Replace the parts if the parts are defective.
4
Replace outdoor controller circuit board.
OCH544
