-
108
-
'17 • PAC-T-256
(a) Operating conditions
When the outdoor air temperature (TH2) is lower than 4
℃
or higher continues for 30 seconds while the compressor
speed is other than 0 rps.
(b) Detail of operation
The lower limit compressor speed is change as shown in the figure below.
(7) Heating low outdoor temperature protective control
(c) Reset conditions
When either of the following condition is satisfied.
1) The outdooe air temperature (TH2) becomes 6
℃.
2) The compressor speed is 0 rps
.
-4
-6
-8
-10
-12
-2
4
Lower limit 35 rps
Lower limit 45 rps
Lower limit 45 rps
Lower limit 35 rps
Normal operation
Outdoor air temperature (°C)
6
'09•SRK-DB-087D
(8) Compressor overheat protection
(a) Purpose
(b) Detail of operation
1)
Discharge pipe temperature (˚C)
180
180
180
(Example) Fuzzy
95
105
115
180
105
180
105
the com
2)
(j) Current safe
(i) Purpose:
(ii) Detail of operation:
(k) Current cut
(i) Purpose:
(ii) Detail of operation:
(l) Outdoor unit failure
(m) Indoor fan motor protection
3)
ࠉ
Reset conditions:
When either of the following condition is satisfied.
a)
ࠉ
The outdoor air temperature (TH2) becomes 6ºC.
b)
ࠉ
The compressor command speed is 0 rps.
item
(i)
,
(ii)
is satisfied. Once the unit is stopped by this function, it is not
-
(i)
(ii)
115
105-
95-
95-
115
min
-1
-
has elapsed
Cooling
Heating
Lower limit speed
25 rps
32 rps