Hot Start Control (In Heating Operation Only) - Daikin VRV RXYMQ-A Series Service Manual

SiME332106E
8.11.3 Operational Concept (Designer Panel)
Cooling
Heating

8.12 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
Part 4 Functions and Control
Movement pattern
01: Pattern 1
Appearance
02: Pattern 2
Time
(seconds)
03: Pattern 3
13 (23)-14
04: Pattern 4
Indicates the horizontal flap is in the position of reducing airflow volume (the flap is inverted).
Movement pattern
01: Pattern 1
Appearance
02: Pattern 2
Time
(seconds)
03: Pattern 3
13 (23)-14
04: Pattern 4
Indicates the horizontal flap is in the position of reducing airflow volume (the flap is inverted).
Starting condition
OR
Hot start control
H/L remote
controller setting
Remote controller
P0 (Horizontal)
(a)
120
120
0
120
(a)
120
120
0
120
·
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
setting
Outline of Control (Indoor Unit)
: Factory setting
(b) (c)
600 120
600 0
0 120
600 120
: Factory setting
(b) (c)
120 120
120 0
0 120
0 120
Ending condition
·
Lapse of 3 minutes
·
OR
TH2 > 34˚C
·
Tc > 52˚C
Normal control
Normal control
(d)
600
0
600
600
(d)
120
0
120
0
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