Outline Of Control (Indoor Unit); Operation Flow Chart - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

Outline of Control (Indoor Unit)

6. Outline of Control (Indoor Unit)

6.1

Operation Flow Chart

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.
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 for 1 minute.
∗3. When the drain pump kit turns ON, the drain pump kit will stop after it conducts residual operation for a period of 5 minutes.
∗4. If the evaporator inlet temperature is kept at not more than –5°C (23°F) for a period of cumulative 10 minutes or not more than –1°C (30.2°F) for a cumulative period of 40
minutes, 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 minutes,
the freeze-up prevention operation will be reset.
∗5. Thermostat status
Set temperature
ON
OFF
a b
∗6. The FXFQ series have a drain pump as standard equipment.
51
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
No Press the RESET
RUN/STOP push
button.
RUN indicating lamp: OFF
Error mode display: Reset
Fan
control?
Temp. control
Heating
Fan Operation
A
Suction air temperature
a = b = 1˚C (1.8˚F)
(a = b = 0.5˚C (0.9˚F) is only available for the FXFQ and FXHQ series.)
Cooling Operation
(Option)
Aux. electric
heater
Humidifier
)
∗1
Program dry display: Reset
Fan:
Operating with set airflow rate
∗4
∗2 Fan
MF
: Stop
Electronic
20E : Closed
expansion valve
Louver MA : Stop
∗5
(Option)
Drain
∗3
MP
: OFF
pump kit
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 :ON
progress?
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
SiUS331604E
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