Mitsubishi Electric PKA-RP1.6GAL Service Technical Manual page 109

<Abnormalities detected when the power is put on>
Error Code Meaning of error code and detection method
None
63L connector open
Abnormal if 63L connector circuit is open
for three minutes continuously after power
supply.
63L: Low-pressure switch
F3
(5202)
<PUHZ-RP4-6VHA only>
63H connector open
Abnormal if 63H connector circuit is open
for three minutes continuously after power
supply.
F5
63H: High-pressure switch
(5201)
2 connector open
Abnormal if both 63H and 63L connector
circuits are open for three minutes continu-
ously after power supply.
F9
(4119)
63H: High-pressure switch
63L: Low-pressure switch
<PUHZ-RP4~6VHA only>
1 No voltage is supplied to terminal
block(TB1) of outdoor unit.
a) Power supply breaker is put
off.
b) Contact failure or discon-
nection 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
RP1.6-3VHA
:Disconnection of connector
R or S
RP4-6VHA :Disconnection
of connector SC-R or SC-S
3 Electric power is not supplied to
outdoor controller circuit board.
a) Disconnection of connector
— (CNDC)
4 Disconnection of reactor (DCL
or ACL)
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 Disconnection or contact failure
of 63L connector on outdoor
controller circuit board
2 Disconnection or contact failure
of 63L
3 63L is working due to refriger-
ant leakage or defective parts.
4 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
1 Disconnection or contact failure
of connector (63H,63L) on
outdoor controller circuit board.
2 Disconnection or contact failure
of 63H, 63L
3 63H and 63L are working due
to defective parts.
4 Defective outdoor controller
board.
109
Case
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.
RP1.6-3VHA :Disconnection of connector R
RP4-6VHA :Disconnection of connector SC-R
3 Check connection of the connector (CNDC)
on the outdoor controller circuit board.
Check connection of the connector, LD1 and
LD2 for RP3V and CNDC for RP4-RP6V, on
the outdoor power circuit board.
4 Check connection of reactor. (DCL or ACL)
RP1.6-3VHA: Check connection of "LO" and "NO"
RP4-6VHA: Check connection of "L1"and "L2"
5 a) Check connection of outdoor noise filter
circuit board.
b) Replace outdoor noise filter circuit board.
Refer to page 122, 123 and 124.
6 Replace outdoor power circuit board.
7 Replace controller board (When items above
are checked but the units can not be repaired.)
1 Check connection of 63L connector on
outdoor controller circuit board.
Refer to page 121.
2 Check the 63L side of connecting wire.
3 Check refrigerant pressure.
Charge additional refrigerant.
Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
1 Check connection of 63H connector on
outdoor controller circuit board.
Refer to page 121.
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.
1 Check connection of connector(63H,63L) on
outdoor controller circuit board.
Refer to page 121.
2 Check the 63H and 63L side of connecting
wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
Judgment and action
or S. Refer to page 124.
or SC-S. Refer to page 125.
on the outdoor noise filter
circuit board.
Check connection of "R" and "S" on
the outdoor power circuit board.
Refer to page 122, 123 and 125.
on the active filter module.(ACTM)