Thermostat Control - Daikin FTXS20K2V1B Service Manual

Main Functions
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 Conditions
Cooling/Dry
Heating
Refer to Temperature Control on page 18 for details.
24
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 Zone C
–1.5˚C
Zone B Zone B
Zone A Zone A
Zone A Zone A
Zone B Zone B
1.0˚C
Zone C Zone C
Room thermistor temperature – target temperature
ON ON
Cooling : –0.5˚C
Dry : –0.5˚C
Cooling : –2.0˚C
Dry : –2.5 ~ –2.0˚C
OFF OFF
Room thermistor temperature – target temperature
OFF OFF
1.5˚C
0˚C
ON ON
SiBE041134EB
(R22110)
(R22126)
Functions and Control