Thermostat Control - Daikin FVXG25K2V1B Service Manual

Main Functions
1.8

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 / Radiant>
Refer to "Temperature Control" on page 18 for detail.
26
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 / Radiant: 10 seconds)
C
–1.5˚C
B
A
OFF
OFF OFF
A A
B B
1.5˚C
C C
Room thermistor temperature – target temperature
ON
Cooling : –0.5˚C
Dry : –0.5˚C
Cooling : –2.0˚C
Dry : –2.5 ~ –2.0˚C
Room thermistor temperature – target temperature
2.0˚C
0.5˚C
ON ON
SiBE061121_A
(R12319)
(R12432)
Function and Control