Hot Start Control (In Heating Only) - Daikin RXYQ-TA Series Service Manual

SiUS341615E
8.9

Hot Start Control (In Heating Only)

At startup with thermostat ON or after the completion of defrosting in heating operation, the indoor
fan is controlled to prevent cold air from blasting out and ensure startup capacity.
Functions and Control
TH2 : Temperature detected with the gas thermistor
Tc : High pressure equivalent saturated temperature
Starting condition
OR
Hot start control
H/L remote
controller setting
Remote controller
setting
P0 (Horizontal)
When the heater of FXTQ is to be used
Starting condition
OR
Hot start control
Airflow rate at
heater startup
·
Defrost ending
·
Oil return ending
·
Thermostat ON
Hot start in progress
LL
The fan is not OFF before initiating the hot start: LL
The fan is OFF before initiating the hot start: OFF
OFF
·
Defrost ending
·
Oil return ending
·
Thermostat ON
Hot start in progress
LL
The fan is not OFF before initiating the hot start: LL
The fan is OFF before initiating the hot start: OFF
OFF
ON
OFF
Outline of Control (Indoor Unit)
Ending condition
·
Lapse of 3 minutes
·
OR
TH2 > 34˚C (93.2˚F)
·
Tc > 52˚C (125.6˚F)
Normal control
Normal control
Ending condition
·
Lapse of 3 minutes
·
OR
TH2 > 34˚C (93.2˚F)
·
Tc > 52˚C (125.6˚F)
Normal control
Normal control
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