Mitsubishi Heavy Industries SRK63ZR-S Technical Manual page 48

(h) Heating low outdoor temperature protective control
(i) Operating conditions: When the outdoor air temperature (TH2) is lower than 4℃ or higher continues for 30 seconds
(ii) Detail of operation:
-12
Note(1) Values in ( ) are for the model SRK63.
3) Reset conditions:
(iii) Reset conditions:
a) The outdoor air temperature (TH2) becomes 6ºC.
1) The outdooe air temperature (TH2) becomes 6℃.
b) The compressor command speed is 0 rps.
2) The compressor command speed is 0 rps.
(i) Compressor overheat protection
(i) Purpose:
(ii) Detail of operation
1)
(Example) Fuzzy
Model
Lower limit speed
2)
(j) Current safe
(i) Purpose:
(ii) Detail of operation:
(k) Current cut
(i) Purpose:
(ii) Detail of operation:
(l) Outdoor unit failure
while the compressor command speed is other than 0 rps.
The lower limit compressor command speed is change as shown in the figure below.
-10 -8 -6 -4 -2
Outdoor air temperature (°C)
When either of the following condition is satisfied.
When either of the following condition is satisfied.
95
95-105
Item
Cooling
25 rps
115
Lower limit 60 rps
Lower limit 50(45) rps
Lower limit 40(45) rps
Lower limit 35 rps
Normal operation
4 6
180
180
180
105
Discharge pipe temperature (˚C)
105-115
95-105
Heating
32 rps

- -
'15 • SRK-T-175
'09•SRK-DB-087D
115
180
180
-