Thermostat Control - Daikin FTX-N Series 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.
Details
Thermostat OFF Condition
 The temperature difference is in the zone A.
Thermostat ON Conditions
 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 temperature difference remains in zone B for the determined monitoring time.
Cooling
Heating
Refer to Temperature Control on page 15 for details.
21
(Cooling: 10 minutes, Heating: 10 seconds)
Zone C
–1.0˚C (–1.8˚F)
Zone B
–2.0˚C (–3.6˚F)
Zone A
Zone A Zone A
Zone B Zone B
1.5˚C (2.7˚F)
Zone C Zone C
Room thermistor temperature – target temperature
ON
–0.5˚C (–0.9˚F)
–1.5˚C (–2.7˚F)
OFF
Room thermistor temperature – target temperature
OFF OFF
2.0˚C (3.6˚F)
0.5˚C (0.9˚F)
ON ON
SiUS041638EA
(R24628)
(R24629)
Functions and Control