Low Hz High Pressure Limit - Daikin 4MXS-R Series Service Manual

Control Specification
A (minutes)
B (°C)
C (°F)
D (Hz)
E (Hz)
F (seconds)
G (seconds)
H (seconds)
J (seconds)
K (pulse)
L (pulse)
M (pulse)
N (pulse)
P (pulse)
Q (pulse)

4.12 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.
Details
103
18 class 24/36 class
33 26
4 ~ 12 4 ~ 12
39.2 ~ 53.6 39.2 ~ 53.6
58 58
74 42
60 90
120 60
650 590
80 40
320 400
300 250
300 300
320 400
160 50
160 0
A
Reset zone
Highest indoor
heat exchanger
temperature
among
operating rooms
18 class
A 60°C (140°F)
B 59°C (138.2°F)
C 56°C (132.8°F)
Dropping zone
B
Keep
zone
C
(R14587)
24/36 class
38.5°C (101.3°F)
37.5°C (99.5°F)
34.5°C (94.1°F)
Functions and Control
SiUS121736EA