Daikin VRV RXYQ72-384XAYCA Service Manual page 114

Outline of Control (Indoor Unit)
B
(Option)
4
Aux.
EH
: OFF
electric heater
Humidifier Hu : OFF
MF
Fan :
LL operation
Electronic YE :
expansion valve
Closed
Note(s)
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 auxiliary 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. The control of auxiliary electric heater connected to FXTQ-TA, FXTQ-TB models differ from this
flowchart.
For details, refer to Heater Control (FXTQ-TA, FXTQ-TB Models) on page 125.
5. If the evaporator inlet temperature is kept at less than –5°C (23°F) for a period of cumulative 10
107
Heating Operation
Drain
MP : OFF
pump kit
No
Swing flap?
13
13
Yes
Set wind direction
Swing flap
Yes
Is test run in
progress?
No
18 Are
conditions for gas
Yes
furnace operation
established?
No
Is
Yes
defrost operation in
progress?
No
14
Yes
Is hot starting in
progress?
No
Remote controller does
not display STANDBY
Restart
Yes
prevention operating
in progress?
(4 min.)
No
15
(1)
(3)
Thermostat
status
(2)
(Option)
(Option)
4 4
Aux. Aux.
EH
: OFF
electric heater electric heater
Humidifier Hu : ON Humidifier
Is
16
outlet air
temperature drop protection
in progress?
No
MF
Fan :
Operating with set airflow rate
Electronic expansion valve YE :
Capacity control
A
Fan
MF
Depends on the intensity
of gas combustion.
Remote controller
displays STANDBY
(Option)
4
Aux.
EH EH
: ON : OFF
electric heater
Hu : ON Humidifier Hu : OFF
Yes
MF MF
Fan : Fan :
Operating in L mode Stop
Electronic
YE :
expansion valve
Open
SiUS342004EB
Is
defrost
Yes
operation in
progress?
No
(Option)
4
Aux.
EH : OFF
electric heater
Humidifier Hu : OFF
B
Electronic
YE
:
expansion valve
Opened
Electronic
YE
:
expansion valve
Closed
Part 4 Functions and Control