Outline Of Control (Indoor Unit); Operation Flowchart - Daikin REYQ-XA Service Manual

SiUS371901E

9. Outline of Control (Indoor Unit)

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
Functions and Control
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
Yes
Press the RESET
No
RUN/STOP push
button.
RUN indicating lamp: OFF
Error mode display: Reset
Fan
Temp. control
Heating
Fan Operation
A
Cooling Operation
(Option)
Aux. electric
∗4
heater
Humidifier
)
∗1
Program dry display: Reset
Fan:
Operating with set airflow rate
∗5
Yes
∗2 Fan
MF
: Stop
Electronic
YE : Closed
expansion valve
∗6
Louver : Stop
MA
Drain
∗3
MP
: OFF
pump kit
∗4
Aux. electric
EH : OFF
heater
Hu
Humidifier : OFF
∗7
Outline of Control (Indoor Unit)
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
Electronic expansion valve
YE : Capacity control
Thermostat-ON-
operation signal to
outdoor unit: Output
Drain pump kit
MP : ON
A
Yes
Dew prevention position
Cassette type: P1
Ceiling suspended type: P0
Electronic expansion valve
YE
: Closed
Thermostat-ON-
operation signal to
outdoor unit: Output
134