Outline Of Control (Indoor Unit); Operation Flowchart - Daikin VRV EMERION RXYQ-AATJA 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
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
121
YE
The previous settings of airflow
(
rate, wind direction, and
temperature are displayed.
Stop
Run RUN indicating lamp: OFF
Is the
Yes
RUN indicating lamp: Blink
No
Error code: Displayed
Yes
No Press the RESET
RUN/STOP push
button.
RUN indicating lamp: OFF
Error mode display: Reset
Fan
∗2 Fan
Temp. control
Heating
∗3
Fan Operation
A
Cooling Operation
(Option)
Aux. electric
∗4
heater
Humidifier
)
∗1
Program dry display: Reset
Fan:
Operating with set airflow rate
∗5
Yes
MF
: Stop
Electronic
YE : Closed
expansion valve
∗6
Louver MA : Stop
Drain
MP
: OFF
pump kit
∗4
Aux. electric
Electronic expansion valve
EH : OFF
heater
Hu
Humidifier : OFF
∗7
EH
: OFF
Hu : OFF
No
Swing flap
Dew
prevention condition?
Yes
No
Swing flap Set wind direction
ON
Program dry
ON/OFF
OFF
Program dry operation
A
MF
Is
Drain pump kit
Yes
Restart prevention
operation in progress? : OFF after 5-min.
MP
(5 min.) residual operation
No
Is freeze-
Drain pump kit
Yes
up prevention operation in
MP
progress? :ON
No
Is
test run in
progress?
No
OFF
Drain pump kit
Thermostat status
: OFF after 5-min.
MP
residual operation
ON
YE : Capacity control
Thermostat-ON-
operation signal to
outdoor unit: Output
Drain pump kit
MP : ON
A
Part 4 Functions and Control
SiUS342303E
Yes
Dew prevention position
Cassette type: P1
Ceiling suspended type: P0
Electronic expansion valve
YE
: Closed
Thermostat-ON-
operation signal to
outdoor unit: Output