Heating Peak-Cut Control - Daikin 4MXS-R Series Service Manual

SiUS121736EA
4.8

Heating Peak-cut Control

Outline
During heating operation, the indoor heat exchanger temperature determines the frequency upper
limit to prevent abnormal high pressure.
Details
Functions and Control
The operating frequency is judged with the indoor heat exchanger temperature 2 minutes after
the operation starts and F
The maximum value of the indoor heat exchanger temperature controls the following (excluding
stopped rooms).
B
C
D
Indoor heat exchanger
temperature
A 65°C (149°F)
B 55°C (131°F)
C 54°C (129.2°F)
D 52°C (125.6°F)
E 50°C (122°F)
Zone
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.
seconds after the number of operation room is changed.
F (seconds)
When increase
When decrease
Control Specification
Stop zone
A
Dropping zone
Keep zone
Up zone
E
Reset zone
(R23928)
30
2
Control
100