Thermostat Control - Daikin D-Series Service Manual

Si18-525B
7.5

Thermostat Control

Thermostat control is based on the difference between the room temperature and the setpoint.
Thermostat OFF Condition
Thermostat ON Condition
Cooling / Dry
Heating
Function
The temperature difference is in the zone A.
The temperature difference is above 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)
C
B
A
A
B
C
Room temperature - setpoint
ON
Cooling : – 0.5˚C
Dry : – 0.5˚C
Cooling : – 2.0˚C
Dry : – 2.5 ~ – 2.0˚C
OFF
Room temperature - setpoint
OFF
1.5˚C
0˚C
ON
Indoor Unit (RA Models)
(R4668)
(R4669)
137