Functions Of Thermistors - Daikin FCQ35B7V1 Service Manual

Functional concept
1.2

Functions of Thermistors

1
Locating the
thermistors
2
3
4
5
Remark
Functions of the
thermistors
2–4
Sensor R3T on indoor coil of FCQ35~60B7V1, FFQ35~60BV1, FBQ35~60B7V1 & FHQ35~60BUV1
is not used when the indoor units are connected to sky-air outdoor units (RR, RQ, RZQ).
Ther- Wiring
Location
mistor symbol
1 Indoor air R1T
return
2 Indoor R2T
heat
exchanger
3 Indoor R3T
heat
exchanger
R3T
R2T
Mode Function
Cooling Thermostat control
PMV control
General frequency control
Heating Thermostat control
PMV control
General frequency control
Cooling Compressor frequency control (target Te)
Inverter current protection control
Freeze-up control
Heating Compressor frequency control (target Tc)
Inverter current protection control
Hot start control
Peak cut-off
Heating Peak cut-off
ESIE05-04
R1T
Part 2 – Functional Description