Daikin FTXM-V Series, Руководство по обслуживанию

Страница: 72 / 172

Control Specification SiUS042113E
68 Part 4 Functions and Control
3.7 Freeze-up Protection Control
Outline During cooling operation, the signal sent from the indoor unit determines the frequency upper limit
and prevents freezing of the indoor heat exchanger. The signals from the indoor unit are divided
into zones.
Details The operating frequency limitation is judged with the indoor heat exchanger temperature.
R4003644
3.8 Heating Peak-cut Control
During heating operation, the indoor heat exchanger temperature determines the frequency upper
limit to prevent abnormal high pressure.
The operating frequency limitation is judged with the indoor heat exchanger temperature.
Reset zone
Up zone
Keep zone
Dropping zone
Stop zone
13°C (55.4°F)
7°C (44.6°F)
3°C (37.4°F)
0°C (32.0°F)
5°C (41.0°F)
(Reference)
Indoor heat exchanger
temperature (R2T)
Zone
Control
Stop zone When the temperature reaches the stop zone, the compressor stops.
Dropping zone The upper limit of frequency decreases.
Keep zone The upper limit of frequency is kept.
Up zone The upper limit of frequency increases.
Reset zone The upper limit of frequency is canceled.
09/12 class 18/24 class
(°C) (°F) (°C) (°F)
A 62 144 60 140
B 54 129 54 129
C 50 122 51 124
D 48 118 49 120
E 44 111 44 111
Indoor heat exchanger
temperat
u re
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
(R23928)
D
C
B
A
E