Specifications

ManualsBrandsDaikin ManualsHeat PumpSUPER MULTI NX 2MXS18GVJU

SiUS12-928_A Control Specification

Function and Control 50

3.6 Freeze-up Protection Control

Outline During cooling operation, the signals sent from the indoor unit allow the operating frequency

limitation and prevent freezing of the indoor heat exchanger. (The signal from the indoor unit is

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.

3.7 Heating Peak-cut Control

Outline During heating operation, the indoor heat exchanger temperature determines the frequency upper

limit to prevent abnormal high pressure.

Detail  The operating frequency is judged with the indoor heat exchanger temperature 2 minutes after

the operation starts and ( ) seconds after the number of operation room is changed.

 The maximum value of the indoor heat exchanger temperature controls the following (excluding

stopped rooms).

(R12295)

Return from stop

Reset zone

Indoor heat exchanger

thermistor temperature

Up zone

Keep zone

Dropping zone

Stop zone

0°C (32°F)

3°C (37°F)

5°C (41°F)

7°C (45°F)

13°C (55°F)

(Reference)

Zone Control

Stop zone When the temperature reaches the stop zone, the compressor stops.

Dropping zone The timer starts, and the frequency is dropping.

Keep zone The upper limit of frequency is kept.

Up zone The upper limit of frequency is increased.

Reset zone The upper limit of frequency is canceled.

18 class 24/32 class

65ºC (149ºF) 65ºC (149ºF)

50ºC (122ºF) 54ºC (129ºF)

48ºC (118ºF) 53ºC (127ºF)

47.5ºC (117.5ºF) 51ºC (124ºF)

46.5ºC (116ºF) 49ºC (120ºF)

(R11595)