Thermostat Control - Daikin 2MXS-N Series Service Manual

Function of CTXS, FTXS, CDXS, FDXS, FVXS Series
1.7

Thermostat Control

Outline Thermostat control is based on the difference between the room thermistor temperature and the
target temperature.
Detail Thermostat OFF Condition
Thermostat ON Condition
<Cooling / Dry>
<Heating>
CTXS, FTXS series
CDXS, FDXS, FVXS series
Refer to Temperature Control on page 34 for detail.
42
The temperature difference is in the zone A.
The temperature difference returns to the zone C after being in the zone A.
The system resumes from defrost control in any zones except A.
The operation turns on in any zones except A.
The monitoring time has passed while the temperature difference is in the zone B.
(Cooling / Dry: 10 minutes, Heating: 10 seconds)
Zone C
–1.5˚C (–2.7˚F)
Zone B
Zone A
Zone A Zone A
Zone B Zone B
1.5˚C (2.7˚F)
Zone C Zone C
Zone A
Zone B
1.0˚C (1.8˚F)
Zone C
Room thermistor temperature – target temperature
ON
Cooling : –0.5˚C (–0.9˚F)
Dry : –0.5˚C (–0.9˚F)
Cooling : –2.0˚C (–3.6˚F)
Dry : –2.5 ~ –2.0˚C (–4.5 ~ –3.6˚F)
OFF
Room thermistor temperature – target temperature
OFF OFF
2.0˚C (3.6˚F)
0.5˚C (0.9˚F)
ON ON
Room thermistor temperature – target temperature
OFF
1.5˚C (2.7˚F)
0˚C (0˚F)
ON
SiUS121502E
(R22426)
(R22427)
(R22428)
Function and Control