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10-4. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is put on>
Checkcode Abnormal points and detection method
None
63H connector open
Abnormal if 63H connector circuit is open
for 3 minutes continuously after power sup-
ply.
63H: High pressure switch
F5
(5201)
OCH653C
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 sup-
ply 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) (ZM60/71)
—
4 Disconnection of reactor (DCL
or ACL)
5 Defective outdoor power circuit
board
6 Defective outdoor controller
circuit board
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
Note: Refer to indoor unit section for code P and code E.
Cause
1 Check following items.
2 Check following items.
3 Check connection of the connector (CNDC)
4 Check connection of reactor. (DCL or ACL)
5 Replace outdoor power circuit board.
6 Replace controller board (When items above
1 Check connection of 63H connector on
2 Check the 63H side of connecting wire.
3 Check continuity by tester.
4 Replace outdoor controller circuit board.
37
judgment and action
a) Power supply breaker
b) Connection of power supply terminal block
(TB1)
c) Connection of power supply terminal block
(TB1)
a) Connection of power supply terminal block
(TB1)
b) Connection of terminal on outdoor power
circuit board
on the outdoor controller circuit board.
Check connection of the connector CNDC on
the outdoor power circuit board. (ZM60/71)
Refer to "10-9. TEST POINT DIAGRAM".
Refer to "7. WIRING DIAGRAM".
are checked but the units cannot be repaired.)
outdoor controller circuit board.
Refer to "10-9. TEST POINT DIAGRAM".
Replace the parts if the parts are defective.
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