Operation Flow Chart - Daikin RXYQ96PYDN Service Manual

SiUS34-801A_b

3. Operation Flow Chart

power supply
Initialize electronic
expansion valve
Detect louver lock
LED in remote
controller turns ON
Cyclic operation with
Run or Stop?
RUN/STOP pushbutton
RUN indicating lamp: ON
Air flow rate display: Displayed
Wind direction display: Displayed
Temp. setting display: Displayed
Cooling
Cooling Operation Heating Operation
*1. If any malfunction occurs, the relevant malfunction code will be displayed according to the malfunction
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 min.
*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 23°F for a period of cumulative 10 min. or
not more than 30.2°F for a cumulative period of 40 min., frost prevention operation will be conducted. If
the evaporator inlet temperature is kept at not less than 44.6°F for a consecutive period of 10 min., the
frost prevention operation will be reset.
*5. Thermostat status
Set temperature
OFF
a b
*6. The FXCQ, FXFQ, FXKQ, and FXSQ series have the drain pump as standard equipment.
Indoor Unit
Start
Turn ON
20E
The previous settings of air
(
flow rate, wind direction, and
temperature are displayed.
Stop
Run
RUN indicating lamp: OFF
Is the
Yes
safety device
activated?
RUN indicating lamp: Blink
No
Malfunction code: Displayed
Is the RUN
Yes
indicating lamp
blinking?
Press the RESET
No
RUN/STOP
pushbutton.
RUN indicating lamp: OFF
Malfunction mode display: Reset
Fan
Fan or Temp.
control?
Temp. control
Cooling or
Heating?
Heating
Fan Operation
A
ON
Suction air temperature
a=b=1
(a=b=0.5 is only available for the FXCQ, FXFQ, FXHQ, and FXKQ series.)
Cooling Operation
(Option)
Aux. electric
heater
Humidifier
)
*1
Microcomputer dry display:
Fan:
Operating with set air flow rate
*4
*2 Fan
MF
: Stop
operation in progress?
Electronic
20E
: Closed
expansion valve
Louver MA : Stop
(Option)
Drain
*3 MP
: OFF
pump kit
*5
Aux. electric
52H : OFF
heater
Humidifier Mu : OFF
Electronic expansion valve
20E
Thermostat-ON-
operation signal to
outdoor unit: Output
(Option)
*6
Drain pump kit
Operation Flow Chart
52H
: OFF
Mu : OFF
No
Swing flap
Dew
prevention condition?
Yes
No
Swing flap Set wind direction
ON
Microcomputer dry
ON/OFF
OFF
Microcomputer dry operation
Reset
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
Drain pump kit
Yes
freeze prevention
MP
:ON
No
Is
test run
in progress?
No
(Option)
OFF
Drain pump kit
Thermostat status
: OFF after 5-min.
MP
residual operation
ON
: Capacity control
MP : ON
A
Yes
Dew prevention position
Cassette type: P1
Ceiling suspended type: P0
Electronic expansion valve
20E
: Closed
Thermostat-ON-
operation signal to
outdoor unit: Output
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