Service Manual

SiUS121502E Control Specification
Function and Control 71

: The same value continues.
3.12 Low Hz High Pressure Limit
Outline The system controls the upper limit of the frequency to prevent abnormal high pressure while the
frequency is low. Control is carried out according to three zones.
Detail
18 class 24/36 class
A (minutes) 33 26
B (°C) 4 ~ 12 4 ~ 12
C (°F) 39.2 ~ 53.6 39.2 ~ 53.6
D (Hz) 58 58
E (Hz) 74 42
F (seconds) 60 90
G (seconds) 120 60
H (seconds) 650 590
J (seconds) 80 40
K (pulse) 320 400
L (pulse) 300  250
M (pulse) 300  300
N (pulse) 320 400
P (pulse) 160  50
Q (pulse) 160  0
18 class 24/36 class
A 60°C (140°F) 38.5°C (101.3°F)
B 59°C (138.2°F) 37.5°C (99.5°F)
C 56°C (132.8°F) 34.5°C (94.1°F)
A
B
C
Highest indoor
heat exchanger
temperature
among
operating rooms
Reset zone
Dropping zone
Keep
zone
(R14587)