Outline Of Control (Indoor Unit); Operation Flowchart - Daikin RXYQ-TA Series Service Manual

Outline of Control (Indoor Unit)

8. Outline of Control (Indoor Unit)
8.1

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
∗1. If any error occurs, the relevant error code will be displayed according to the error code display of the
remote controller.
∗2. When the aux. electric heater turns ON, the fan will stop after it conducts residual operation.
∗3. When the drain pump kit turns ON, the drain pump kit will stop after it conducts residual operation for a period of 5 min.
∗4. If the evaporator inlet temperature is kept at not more than –5°C (23˚F) for a period of cumulative 10 min. or not more than –1°C (30.2˚F) for a cumulative
period of 40 min., freeze-up prevention operation will be conducted. If the evaporator inlet temperature is kept at not less than 7°C (44.6˚F) for a consecutive period of 10
min., the freeze-up prevention operation will be reset.
∗5. Thermostat status
Set temperature
ON
OFF
a b
∗6. The FXFQ series have the drain pump as standard equipment.
71
20E
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
Press the RESET
No
RUN/STOP push
button.
RUN indicating lamp: OFF
Error mode display: Reset
Fan
Temp. control
Heating
Fan Operation
A
a = b = 1˚C (1.8˚F) or 0.5˚C (0.9˚F)
The values a and b depend on the field setting 12(22)-2.
Cooling Operation
(Option)
Aux. electric
∗16
heater
Humidifier
)
∗1
Program dry display: Reset
Fan:
Operating with set airflow rate
∗4
Yes
∗2 Fan
MF
: Stop
Electronic
20E : Closed
expansion valve
∗5
Louver : Stop
MA
(Option)
Drain
∗3
MP
: OFF
pump kit
∗16
Aux. electric
52H : OFF
heater
Mu
Humidifier : OFF
(Option)
∗6
52H
: OFF
Mu : 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
(Option)
Is
Drain pump kit
Yes
Restart prevention
operation in progress? : OFF after 5-min.
MP
(5 min.) residual operation
No
(Option)
Is freeze-
Drain pump kit
Yes
up prevention operation in
MP
progress? :ON
No
Is
test run in
progress?
No
(Option)
OFF
Drain pump kit
Thermostat status
: OFF after 5-min.
MP
residual operation
ON
Electronic expansion valve
20E : Capacity control
Thermostat-ON-
operation signal to
outdoor unit: Output
Drain pump kit
MP : ON
A
SiUS341615E
Yes
Dew prevention position
Cassette type: P1
Ceiling suspended type: P0
Electronic expansion valve
20E
: Closed
Thermostat-ON-
operation signal to
outdoor unit: Output
Functions and Control