37
10-4. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is put on>
Note: Refer to indoor unit section for code P and code E.
Check 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 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
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 CNDC on
the outdoor power circuit board.
(
ZM60/71)
Refer to "10-9. TEST POINT DIAGRAM".
4
Check
connection of reactor. (DCL or ACL)
Refer to "7. WIRING DIAGRAM".
5
Replace outdoor power circuit board.
6
Replace controller board (When items above
are checked but the units cannot 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. TEST POINT DIAGRAM".
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.
OCH653
