−
42
−
9. TROUBLESHOOTING CHART
Follow the details of
9-2. Basic Check Items.
9-2-2. Incorrect cab
1
le connection between Indoor
When the main po
and outdoor units
w
The indoor unit is connected to the outdoor unit with
er supply is tur
5 cab
ned on,
les (Heat pump model) or 3 cab
the OPERA
les (Cooling Only
TION lamp on the indoor unit
model). Chec
b
k that the indoor and outdoor units ha
links
v
.
e
2
been proper
The indoor f
ly connected with ter
an motor speed does not change
minals assigned the
same n
in the Dr
umbers
y oper
.
ation.
If the connectors are not proper
3
ly
The compressor is not tur
connected, the outdoor unit will not oper
ned off e
ate nor
v
mally
en though
,
the room temper
or OPERA
ature is in the r
TION lamp and
ange that the
TIMER lamp will blink (5Hz).
compressor is tur
9-2-3.
ned off
Pr
.
ogram contr
4
ol
The compressor is not tur
The microcontroller oper
ned on and off e
ates as sho
v
wn in
en
T
though the ther
ab
mo control is operated in the
le 9-2-1
to control the air conditioner
Dr
.
y oper
If there are an
ation.
y oper
5
a-
The outdoor f
tional prob
an motor stops in the Heating
lems
oper
, chec
ation.
k whether or not the problems
6
correspond to
The compressor is not tur
T
ned on e
ab
v
le 9-2-1.
en though
If the
the room temper
y correspond to the
ature is in the r
T
ange that the
able
compressor is tur
, the
ned on.
y are not prob
7
lems with the air conditioner
The oper
,
ation mode changes in the
b
A
ut the
utomatic oper
y are indispensab
ation.
le operations to control and
8
maintain the air conditioner proper
The F
ly
an only oper
.
ation continues in the
Automatic operation.
9 The Hi-POWER operation does not wor
9-1.
k.
Tr
No.
oub
Operation of air conditioner
leshooting Pr
Descriptions
ocedure
The OPERA
If there is no troub
TION lamp b
le corresponding to 9-2
links to indicate that po
, chec
wer is tur
k
ned on.
whether or not there are f
If the [
aulty parts f
] b
ollo
utton is pressed, the lamp stops b
wing
linking.
9-4.
The indoor f
Self-Diagnosis b
an motor speed is automatically controlled in the Dr
y Remote Control.
y
9-2.
oper
Basic Chec
ation.
k Items
The compressor has a function that it is not tur
9-2-1.
ned off f
P
or
o
3 min
wer suppl
utes after it is tur
y v
ned on e
olta
v
g
en though the room temper
e
ature
The line v
is in the r
oltage m
ange that the compressor is tur
ust be A
ned off
C 220
−
240V
.
.
In the Dr
If it is not
y oper
within this r
ation, the compressor is tur
ange
ned on and off
, the air conditioner ma
automatically at the regular inter
y not operate
v
nor
als
mally
, independent of the ther
.
mo
Table 9-2-1
control.
When the indoor heat exchanger temperature is high, the outdoor
fan motor is stopped by the high-temperature limit control
operation.
The compressor is not turned on in the restart delay timer
(3-minutes timer) operation. It is also not turned on after the power
supply is turned on because of this timer operation.
In Automatic operation, the room temperature is detected all time
for control fan speed and the operation mode is changed every
15 minutes according to difference between the room temperature
and the preset temperature.
When the room temperature is in the range (Preset temperature
± 1°C), the Fan only operation is selected.
This operation does not work when the unit is in the Dry operation
or Fan only operation.
FILE NO. SVM-10036