Mitsubishi FDT125VNPWVH - (5) Cooling overload protective control; (6) Cooling high pressure control

'22 • PAC-SM-412
-
30
-
Max. 15 minutes
Heating operation
• Defrost operation

Depends on an operation condition, the time can be longer than 7 minutes.
2-7 minutes

Hot start operation
(b) Endingconditions(Operationreturnstotheheatingcyclewheneitheroneofthefollowingissatisfied.)
(i)Outdoorheatexchangersensor(TH1)temperature:10ºC orhigher
(ii)Continuedoperationtimeofdefrostoperation→Formorethan15minutes
(5) Cooling overload protective control
(a) Operating conditions
(c) Reset conditions
(6) Cooling high pressure control
(a) Purpose
(b) Detector
(c) Detail of operation:
Outdoor heat exchanger temperature (°C)
(Example) Fuzzy
Outdoor heat exchanger temperature sensor (TH1)
1)
2)
-CB
-BA
8
20
C
2
A
B
C
8rps
(1)
8rps
(1)
0rps
After lapse of 20 sec. or over
(3)
After lapse of 20 sec. or over
(3)
After lapse of 20 sec. or over
(3)
lower limit
speed 30 rps
(b) Detail of operation
Item
FDC90, 100VNP-W
Outdoor air temperature
Lower limit speed
Model
40 41 46 47
OFF
ON1
ON2
Outdoor air temperature ( )
C
º
40 rps
The lower limit of compressor speed is set to 30 or 40 rps and even if the calculated result becomes lower than that after
fuzzy calculation, the speed is kept to 30 or 40 rps. However, when the thermostat OFF, the speed is reduced to 0 rps.
Outdoor air
temperature(TH2)
Time after
compressor ON
A B C
TH2
>
=
32ºC —
50 58 60
TH2 < 32ºC —
51 53 56
Outdoor heat exchanger temperature (°C)
(a) Operating conditions
(b) Detail of operation
(10) Heating low outdoor air temperature protective control
-1 14 6
Lower limit 45 rps
Lower limit 35 rps
Normal operation
Outdoor air temperature(°C)
Outdoor air temperature(°C)
38ºC.
H
lower
4
38 39 46 47
OFF
Upper limit 40rps
Lower limit 30rps
Upper limit 65rps
Lower limit 30rps
H
(c) Reset conditions
(5) Cooling overload protective control
(a) Operating conditions
(b) Detail of operation
65(40)rps
30(30)rps
Note (1) Values in ( ) are for outdoor air temperature at 47
(i)
(ii)
calculation exceeds
the upper limit, the upper limit value is maintained.
than that after
fuzzy calculation, the speed is kept to 30(30)rps. However, when the thermostat OFF, the speed is reduced to 0 prs.
When the outdoor air temperature (TH2) is 39°C or higher continues for 30 seconds while the compressor speed is other than
0 rps