Daikin VRV EMERION RXYQ-AATJA, Service Manual

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SiUS342303E Outline of Control (Indoor Unit)
Part 4 Functions and Control 138
9.9 Hot Start Control (In Heating Operation 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.
TH2: Temperature detected with the gas thermistor
Tc : High pressure equivalent saturated temperature

When the heater of FXTQ-TA is to be used
The fan is not OFF before initiating the hot start: LL
The fan is OFF before initiating the hot start: OFF
Hot start control
Hot start in progress
Normal control
Normal control
H/L remote
controller setting
LL
OFF
Remote controller
setting
P0 (Horizontal)
Fan
Louver
Ending condition
·
Lapse of 3 minutes
·
TH2 > 34°C (93.2°F)
·
Tc > 52°C (125.6°F)
OR
Starting condition
·
Defrost ending
·
Oil return ending
·
Thermostat ON
OR
The fan is not OFF b efore initiating the hot start: LL
The fan is OFF b efore initiating the hot start: OFF
Hot start control
Hot start in progress
Normal control
Normal control
Airflow rate at
heater start u p
LL
OFF
ON
OFF
Fa
n
Heater
Ending condition
·
Lapse of 3 min u tes
·
TH2 > 34˚C (93.2˚F)
·
Tc > 52˚C (125.6˚F)
OR
Starting condition
·
Defrost ending
·
Oil ret u rn ending
·
Thermostat ON
OR