Daikin RTSQ20PY1 Service Manual page 126

Outline of Control (Indoor Unit)
Micro-computer dry operation
Micro-computer
*7
dry display
*8
OFF
Thermostat
status
ON
Fan MF : Operating in L
mode after it stops for 6 min.
Fan MF :
Operating in L mode
Electronic
expansion valve
Electronic Closed
20E :
expansion valve
(Option)
Superheated degree control
Drain pump kit
MP
A
*7. Micro-computer dry display
No set temperature and airflow rate of the remote controller are displayed.
*8. Thermostat status
Set temperature when operating the micro-computer dry mechanism.
a b
Suction air temperature
*9
Fan Operation
(Option)
Drain
MP : OFF
pump kit
Aux. electric
52H : OFF
heater
Humidifier Mu : OFF
No
Swing flap
*10
Yes
Set wind direction
Swing flap
*11
Fan MF: Operating
with set airflow rate
Electronic
20E :
expansion valve
Closed
A
*9. Fan operation
By setting the remote controller to Fan, the
fan will operate with thermostat OFF in set
temperature control operation mode.
*10. Set wind direction
According to wind direction instruction from
the remote controller, the wind direction is set
to 100% horizontal while in heating operation.
*11. Fan
According to fan speed instruction from the
remote controller, the fan is put into operation
in LL mode while in heating operation.
115
20E :
: OFF after 5-min.
residual operation
(Option)
Aux. electric
52H : OFF
heater
Humidifier Mu : OFF
Fan MF :
LL operation
Electronic
expansion valve 20E :
Closed
*12. Wind direction
When the heating thermostat turns OFF, the wind direction will be set to 100% horizontal.
*13. Hot start
If the condenser inlet temperature exceeds 34°C at the time of starting operation or after the
completion of defrost operation, or until 3 minutes pass or Tc is above 52°C, hot starting will be
conducted.
*14. Thermostat status
*15. Outlet air temperature drop protection
When the set temperature is below 24°C or the electronic expansion valve opening is small, the
protection will be activated.
Heating Operation
(option)
Drain
pump
MP : OFF
kit
No
Swing flap?
*12
*12 Yes
Set wind direction
Swing flap
Yes
Is defrost operation in
progress?
No
*13
Yes
Is hot starting in
progress?
No
DEFROST/HOT START
indicating lamp: OFF
Yes Restart prevention
operating in progress?
(4 min.)
No
Is test run in
progress?
*14
(1) (3)
Thermostat
status
(2)
(Option) (Option)
Aux. electric Aux. electric
52H : OFF
heater heater
Humidifier Mu : ON Humidifier
*15 Is outlet air
temperature drop
protection in progress?
No
Fan MF : Operating
with set airflow rate
Electronic
20E :
expansion valve
Capacity control
A
(3)
(2)
b
-4 -2 Set temp.
Suction air temp.
SiBE31-801_C
DEFROST/HOT START
indicating lamp: ON
(Option)
Aux. electric
52H : ON 52H : OFF
heater
Mu : ON Humidifier Mu : OFF
Yes
Fan MF : Fan MF :
Operating in L mode Stop
Electronic
20E :
expansion valve
Open
a
(1)
Function