Daikin RZQG71~140L7V1B Service Manual page 114

ESIE12-06
3.2.3 Preheating Operation Control
After the compressor has been turned OFF, the preheating operation control will be activated in
order to avoid refrigerant from dissolving in the compressor oil and quick increase of heating
level during the heating operation.
Starting
Conditions
Ending Conditions
3.2.4 Outdoor Unit Fan Control during Heating Thermostat OFF
In order to prevent the false detection of outdoor suction temperature while the heating thermo.
is off (excluding the timing when the remote controller is off), the outdoor unit fan is turned on
and off at certain intervals.
Starting condition: Outdoor air temperature > 25°C
Ending condition: Outdoor air temperature < 20°C
3.2.5 Starting Control
When compressor start up, the starting frequency is fixed for specified period of time at low
frequency to prevent returning of refrigerant.
Function and Control
• Compressor stopping
• 6 hours or less after turning ON the power.
&
• 1 hour or more after turning OFF the compressor.
or
• Outdoor air temperature is not declining.
&
• Discharge pipe temperature < 40°C
• Operation of thermostat is established.
• 6 hours or more after turning ON the power.
&
• 1 hour or less after turning OFF the compressor.
&
or • Outside temperature is declining.
• Discharge pipe temperature > 43°C
ON
Outdoor unit fan OFF
Pressure
equalizing
Compressor
Electronic
expansion valve
Outdoor unit fan
Indoor unit fan
(Thermostat OFF)
(Remote controller OFF)
6 min. 6 min. 6 min.
Pressure
equalizing
complete
start
Pressure equalizing
control before
compressor start Starting control
(60 sec.)
72 pls
(Electronic expansion
valve control when start up)
(40 sec.)
8 Step ON
(Cooling)
(Outdoor unit fan control
when start up)
OFF
(Heating)
L (Cooling)
Set fan speed (Cooling)
LL (Heating)
OFF
10~120 sec.
Function Details
6 min.
Starting
control
complete
M
L
(Heating)
103