– 65 –
Check
code
[P05]
[P15]
Outdoor
LED display
<Display 1> <Display 2>
<Display 1> <Display 2>
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Power supply trouble (Voltage trouble)]
[Gas leak detection]
Confirm electric con
s
tr
u
ction, etc.
Replace o
u
tdoor P.C.
b
oard (MCC-1600).
Correct wiring.
NO
YES
YES
NO
I
s
there open pha
s
e
of the power
su
pply?
I
s
power
su
pply
voltage normal?
(AC342 to 457V)
[P07]
<Display 1> <Display 2>
[Heat sink overheat trouble]
Replace o
u
tdoor P.C.
b
oard (MCC-1596).
Remove
b
locking matter.
Correct
s
hort-circ
u
it.
NO
NO
YES
YES
Apply radiation grea
s
e
to o
b
jective part.
Retightening of
s
crew
s
.
Doe
s
s
omething
b
lock the
ventilation aro
u
nd the heat
s
ink?
Doe
s
s
omething
b
lock air flow from the fan?
(Short-circ
u
it, etc.)
Are radiation grea
s
e properly applied?
Are the
s
crew
s
of the motor drive element
Q201 on the o
u
tdoor P.C.
b
oard (MCC-1596),
the rear
s
ide of Q201 correctly?
Open valve f
u
lly.
Correct and replace piping.
Correct connector.
Sen
s
or tro
ub
le
→
Replace
Replace o
u
tdoor P.C.
b
oard (MCC-1599).
Replace PMV.
Repair tro
ub
le po
s
ition.
Recharge refrigerant.
A
b
normality
OK
NO
YES
YES
YES
NO
NO
YES
NO
I
s
there cr
us
hed pipe?
I
s
valve f
u
lly opened?
I
s
PMV normal?
Check temp.
s
en
s
or.
TD
s
en
s
or CN603, TS
s
en
s
or CN600
I
s
there ga
s
leak?
I
s
there refrigerant
s
hortage?
Replace o
u
tdoor P.C.
b
oard.
Replace coil of 4-way valve.
Temperat
u
re
s
en
s
or check
TE
s
en
s
or CN601
TS
s
en
s
or CN600
Indoor TC
s
en
s
or
Tro
ub
le
→
Correct and repair
Replace 4-way valve.
YES
YES
NO
NO
A
b
normality
OK
Check operation of
o
u
tdoor I/F (CDB) P.C.
b
oard.
I
s
power
su
pplied
to 4-way valve coil?
I
s
operation of
4-way valve normal?
(Check pipe temp., etc. in
cooling/heating operation.)
[P19]
<Display 1> <Display 2>
[4-way valve inverse trouble]
