– 29 –
(˚C)
3
2
3
0
28
26
20
16
Tc
Tcj
HH
H
L
UL
OFF
E zone
D zone
C zone
B zone
A zone
5
2
A
J
K
I
(˚C)
No.
7
8
Item
Cool
a
ir di
s
ch
a
rge
preventive control
Freeze preventive control
(Low temper
a
t
u
re rele
as
e)
Outline of
s
pecification
s
1) In he
a
ting oper
a
tion, the indoor f
a
n i
s
controlled
bas
ed on the detected temper
a
t
u
re of Tc
s
en
s
or or
Tcj
s
en
s
or. A
s
s
hown
b
elow, the
u
pper limit of the
revol
u
tion freq
u
ency i
s
re
s
tricted.
However B zone i
s
assu
med
as
C zone for
6 min
u
te
s
a
nd
a
fter when the compre
ss
or
a
ctiv
a
ted.
In defro
s
t oper
a
tion, the control v
a
l
u
e of Tc i
s
s
hifted
b
y 6˚C.
1) The cooling oper
a
tion (incl
u
ding Dry oper
a
tion) i
s
performed
as
follow
s
bas
ed on the detected
temper
a
t
u
re of Tc
s
en
s
or or Tcj
s
en
s
or.
When [J] zone i
s
detected for 6 min
u
te
s
(Following fig
u
re), the comm
a
nded freq
u
ency i
s
decre
as
ed from the re
a
l oper
a
tion freq
u
ency.
After then the comm
a
nded freq
u
ency ch
a
nge
s
every
3
0
s
econd
s
while oper
a
tion i
s
performed in
[J] zone.
In [K] zone, time co
u
nting i
s
interr
u
pted
a
nd the
oper
a
tion i
s
held.
When [ I ] zone i
s
detected, the timer i
s
cle
a
red
a
nd the oper
a
tion ret
u
rn
s
to the norm
a
l oper
a
tion.
If the comm
a
nded freq
u
ency
b
ecome
s
S
0
b
ec
aus
e the oper
a
tion contin
u
e
s
in [J] zone, the
ret
u
rn temper
a
t
u
re A i
s
r
a
i
s
ed from 5˚C to 12˚C
u
ntil [ I ] zone i
s
detected
a
nd the indoor f
a
n
oper
a
te
s
with [L] mode.
In he
a
ting oper
a
tion, the freeze-preventive control
work
s
if 4-w
a
y v
a
lve i
s
not exch
a
nged
a
nd the
following condition
s
a
re
sa
ti
s
fied.
(However the temper
a
t
u
re for J zone d
as
hing
control i
s
ch
a
nged from 2˚C to –5˚C .)
<Condition
s
>
• When
or
i
s
e
s
t
ab
li
s
hed 5 min
u
te
s
a
fter
a
ctiv
a
tion.
Tcn
≤
Tc (n – 1) – 5
Tcn < Tc (n – 1) – 1
a
nd Tcn
≤
T
a
< 5˚C
Remark
s
In D
a
nd E zone
s
, the
priority i
s
given to
a
ir
vol
u
me
s
election
s
et
u
p
of remote controller.
In A zone while thermo
i
s
ON, [PRE-HEAT
(He
a
ting re
a
dy)] i
s
di
s
pl
a
yed.
Tcj:
Indoor he
a
t exch
a
nger
s
en
s
or temper
a
t
u
re
Tcj:
Indoor he
a
t exch
a
nger
s
en
s
or temper
a
t
u
re
Tcn:
Tc temper
a
t
u
re when 5
min
u
te
s
el
a
p
s
ed
a
fter
a
ctiv
a
tion
Tc (n – 1):
Tc temper
a
t
u
re
a
t
s
t
a
rt
time
