-
-
'15 • SR-T-185
(c) Defrosting operation
(i) Starting conditions (Defrosting operation can be started only when all of the following conditions are satisfied.)
) After start of heating operation
When it elapsed minutes. (Accumulated compressor operation time)
) After end of defrosting operation
When it elapsed minutes. (Accumulated compressor operation time)
) Outdoor heat exchanger sensor (TH) temperature
When the temperature has been below –ºC for minutes continuously.
) The difference between the outdoor air sensor temperature and the outdoor heat exchanger sensor temperature
¡
The outdoor air temperature
≧
0°C : °C or higher
¡
-°C
≦
The outdoor air temperature
＜
0°C : / × The outdoor air tempe °C or higher
¡
The outdoor air temperature < -°C : -°C or higher
) During continuous compressor operation
In addition, when the speed command from the indoor control of the indoor unit during heating operation has
counted 0 rps 0 times or more and all conditions of ), ), ) and ) above and the outdoor air temperature is °C
or less are satisfied (note that when the temperature for outdoor heat exchanger sensor (TH2) is -5°C or less: 62 rps
or more, -°C or less: less than rps), defrost operation is started.
(ii) Ending conditions (Operation returns to the heating cycle when either one of the following is
satisfied
.)
) Outdoor heat exchanger sensor (TH) temperature: ºC or higher
)
Continued operation time of defrosting → For more than 16 minutes and 50 seconds.
-20
-20
-15
-10
-5
0
5
10
-15
-10
-5
0
Outdoor air temperature (
℃
)
O
ut
do
or
he
at
ex
ch
an
ge
r
te
m
pe
ra
tu
re
(
℃
)
-20
-20
-15
-10
-5
0
5
10
-15
-10
-5
0
Outdoor air temperature (
℃
)
O
ut
do
or
he
at
ex
ch
an
ge
r
te
m
pe
ra
tu
re
(
℃
)
Defrost operation
start
Defrost operation
start
De
fro
st
op
era
tio
n s
tar
t t
em
pe
rat
ur
e
De
fro
st
op
era
tio
n s
tar
t t
em
pe
rat
ur
e
Models 20
～
35
Model 50
Max. 16 minutes and 50 seconds
Heating operation
¡
Defrost operation
̪
Depends on an operation condition, the time can be longer than 7 minutes.
2~7 minutes
̪
Hot keep operation
