– 103 –
Refer to the chart in 11-6.
Gas leak
P.M.V. is defective.
Miswiring of connecting wires of indoor/outdoor units
Clogging of pipe and coming-off of TC sensor
G
as
c
ir
cul
a
t
i
o
n
am
ou
n
t
is
d
o
wn
.
Meas
u
re
gas
p
ress
u
re
.
G
as
s
ho
r
t
age
G
as
l
ea
k
P
i
p
e
clo
gging
Th
erm
o. op
era
t
i
o
n
of co
m
p
ress
o
r
Red
Wh
i
t
e
T
ermina
l block
S5277G
T
es
t
er
3
2
1
T
ermina
l block
a
t
ind
oo
r
side
S5277G o
r
e
qu
i
v
a
l
en
t (G o
r
J typ
e
)
(D
i
o
de
wi
th
ra
t
ed
volt
age
of 400V
o
r
m
o
re
is
a
cc
e
pt
a
bl
e
.)
To
i
t
em
of Out
d
oo
r
u
ni
t
d
o
es
n
ot op
era
t
e
.
11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)
(1) Outdoor unit does not operate
1) Is the voltage between
and
of the indoor terminal block varied?
2) Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the
following diagram.
NOTE
• Measurement should be performed 2 minutes and 30 seconds after starting of the operation.
• Be sure to prepare a diode for judgment.
Normal time
: Voltage swings between DC15 and 60V. .................. Inverter Assembly check
Abnormal time : Voltage does not vary.
(2) Outdoor unit stops in a little while after operation started
<Check procedure> Select phenomena described below.
1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to
restart the unit.
2) If the unit stops once, it does not operate until the power will be turned on again.
3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed.
(Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)
