Room Temperature Thermistor In Remote Controller - Daikin VRV-WIII RWEYQ72PTJU Service Manual

SiUS30-1301
9.3

Room Temperature Thermistor in Remote Controller

Temperature is controlled by both the room temperature thermistor in remote controller and suction
air thermistor () in the indoor unit. (This is however limited to when the field setting for the room
temperature thermistor in remote controller is set to "Use.")
Note: When outdoor air is introduced to the air-conditioner with mixed into indoor air, the room
temperature may fail to be set temperature, since TS and TH1 do not enter the area of "use range
of remote control thermistor." In such a case, put the remote sensor (optional accessory) in your
room, and use it with setting "do not use remote control thermostat."
 For FXTQ: Remote sensor (Optional accessory)
Cooling If there is a significant difference in the set temperature and the suction air temperature, fine
adjustment control is carried out using suction air thermistor () in the indoor unit, or using the room
temperature thermistor in remote controller near the position of the user when the suction air
temperature in indoor unit is near the set temperature.
Set temperature
(Ts)
 Ex: When cooling
Assuming the set temperature in the figure is 75°F or more, and the suction air temperature
has changed from 64°F to 86°F (A  F):
(This example also assumes there are several other air conditioners, the system is OFF, and that
temperature changes even when the thermostat is OFF.)
Suction air thermistor () in indoor unit is used for temperatures from 64°F to 73°F (A  C).
Room temperature thermistor in remote controller is used for temperatures from 73°F to 81°F (C  E).
Suction air thermistor () in indoor unit is used for temperatures from 81°F to 86°F (E  F).
And, assuming suction air temperature has changed from 86°F to 64°F (F  A):
Suction air thermistor () in indoor unit is used for temperatures from 86°F to 77°F (F  D).
Room temperature thermistor in remote controller is used for temperatures from 77°F to 70°F (D  B).
Suction air thermistor () in indoor unit is used for temperatures from 70°F to 64°F (B  A).
 For FXTQ: Remote sensor (Optional accessory)
Note:
Function and Control
Range in which room
temperature thermistor in remote
controller can be used
Outline of Control (Indoor Unit)
Range in which suction air
thermistor (∗) in indoor unit
can be used
Suction air temperature (TH1)
Differential
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