SiUS121736EA Control Specification
Functions and Control 98
4.7 Freeze-up Protection Control
4.7.1 Freeze-up Protection Control (Except FDMQ Series)
Applicable
Models
CTXG09/12/18QVJUW(S)
FTXR09/12/18TVJUW(S)
CTXS07LVJU
FTXS09/12/15/18/24LVJU
CDXS07/15/18/24LVJU
FDXS09/12LVJU
FVXS09/12/15/18NVJU
FFQ09/12/15/18Q2VJU
Outline During cooling operation, the signals sent from the indoor units control the operating frequency
limitation and prevent freezing of the indoor heat exchanger. (The signals from the indoor units are
divided into zones.)
Details The operating frequency limitation is judged with the indoor heat exchanger temperature 2 seconds
after operation starts and 30 seconds after the number of operation room is changed.
(R24042)
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˚F)
5˚C (41˚F)
(Reference)
Indoor heat exchanger
temperature (R2T)
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