Outline Of Control (Indoor Unit); Operation Flowchart - Daikin VRV RXYQ72-384XAYCA Service Manual

Outline of Control (Indoor Unit)

9. Outline of Control (Indoor Unit)
Regarding the outline of control for low-temperature hydrobox (HXY-TA), refer to the service
manual SiUS392016EA.
9.1

Operation Flowchart

Start
Turn ON
power supply
Initialize electronic
expansion valve
Detect louver lock
LED in remote
controller turns ON
Cyclic operation with
Run or Stop?
RUN/STOP push button
Is the safety
device activated?
Is the RUN
indicating lamp
blinking?
RUN indicating lamp: ON
Airflow rate display: Displayed
Wind direction display: Displayed
Temp. setting display: Displayed
Fan or Temp.
control?
Cooling
Cooling or
Heating?
Cooling Operation Heating Operation
105
YE
(
The previous settings of airflow
rate, wind direction, and
temperature are displayed.
Stop
Run RUN indicating lamp: OFF
Yes
RUN indicating lamp: Blink
No
Error code: Displayed 1
Yes
No Press the RESET
RUN/STOP push
button.
RUN indicating lamp: OFF
Error mode display: Reset
Fan
2 Fan
Temp. control
Heating
3
4
Fan Operation
A
Cooling Operation
(Option)
Aux. electric
4
heater
Humidifier
Swing flap
)
Swing flap
Program dry display: Reset
Fan:
MF
Operating with set airflow rate
Restart prevention
operation in progress?
5
up prevention operation in
Yes
MF
: Stop
Electronic
YE : Closed
expansion valve
Louver MA : Stop 6
Thermostat status
Drain
MP
: OFF
pump kit
Aux. electric
Electronic expansion valve
EH : OFF
heater
YE
Hu
Humidifier : OFF
Thermostat-ON-
operation signal to
outdoor unit: Output
7
Drain pump kit
MP
EH : OFF
Hu
: OFF
No
Dew
prevention condition?
Yes
No
Set wind direction
ON
Program dry
ON/OFF
OFF
Program dry operation
A
Is
Drain pump kit
Yes
: OFF after 5-min.
MP
residual operation
(5 min.)
No
Is freeze- Drain pump kit
Yes
MP :ON
progress?
No
Is
test run in
progress?
No
OFF
Drain pump kit
: OFF after 5-min.
MP
residual operation
ON
Electronic expansion valve
: Capacity control
Thermostat-ON-
operation signal to
outdoor unit: Output
: ON
A
Part 4 Functions and Control
SiUS342004EB
Yes
Dew prevention position
Cassette type: P1
Ceiling suspended type: P0
YE
: Closed