18
10-2. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is put on>
Note: Refer to indoor unit section for codes starting with P and 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 (L2 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 (
ACL4
)
5
Disconnection of outdoor noise
filter circuit board or parts fail
-
ure in outdoor noise filter circuit
board
6
Defective outdoor power circuit
board
7
Open of rush current protect
resistor (RS)
8
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 noise filter circuit board. Refer to "10-
6. TEST POINT DIAGRAM".
4
Check
connection of reactor. (
ACL4
)
Refer to "8. WIRING DIAGRAM".
5
a) Check connection of outdoor noise filter
circuit board.
b) Replace outdoor noise filter circuit board.
Refer to "10-6. TEST POINT DIAGRAM".
6
Replace outdoor power circuit board.
7
Replace rush current protect resistor (RS)
Power circuit board might be short-circuit.
Check the power circuit board. (Refer to "10-
6. TEST POINT DIAGRAM".)
8
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. 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.
OCH583
