Thermostat Control - Daikin FTXM-V Series 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.
Details
Thermostat OFF Conditions
 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 monitoring time has passed while the temperature difference is in the zone B.
Cooling
Heating
Reference
Refer to Temperature Control on page 24 for details.
34
(Cooling: 10 minutes, Heating: 10 seconds)
Zone C Zone C
–1.0°C (–1.8°F)
Zone B Zone B
–2.0°C (–3.6°F)
Zone A Zone A
Zone A Zone A
2.0°C (3.6°F)
Zone B Zone B
1.5°C (2.7°F)
Zone C Zone C
Room thermistor temperature – target temperature
ON ON
–0.5°C (–0.9°F)
–1.5°C (–2.7°F)
OFF OFF
Room thermistor temperature – target temperature
OFF OFF
2.0°C (3.6°F)
1.0°C (1.8°F)
0.5°C (0.9°F)
ON ON
SiUS042113E
(R24031)
(R24033)
Part 4 Functions and Control