Daikin 4MXL-T Series Service Manual page 123

SiUS121827E
Details The following are the examples of the electronic expansion valve control for each operation mode.
Operation pattern
When power is turned on
Cooling, 1 room operation
Cooling, 2 rooms operation to
Cooling, 4 rooms operation
Stop
Heating, 1 room operation
Heating, 2 rooms operation
Stop
Heating operation
Discharge pipe thermistor
disconnection control
Stop
1: When all the indoor units are operating, liquid pipe temperature control is conducted.
2: SC (subcooling) control is conducted for the operating indoor units, when some of the units are not operating.
3: Liquid pipe temperature control for stopped room is conducted for the non-operating indoor units.
Part 4 Functions and Control
 : Available
— : Not available
Fully closed when power is turned on
Open control when starting
(Control of target discharge pipe
temperature)
Control when the operating room is
changed
(Control of target discharge pipe
temperature)
Pressure equalizing control
Open control when starting
(Control of target discharge pipe
temperature)
Control when the operating room is
changed
(Control of target discharge pipe
temperature)
(Defrost control)
Pressure equalizing control
Open control when starting
Continue
Pressure equalizing control
— — — — — —
  
— — —
   
— —
  
— — —
    
—
— — — — — —

— — — — —

 
— — —
2

— — — — —

 
— — —
2
— — — — —
—
— — — — —
—

— — — —
—

— — — — —
2
— — — — —
—
Control Specification
— — —
— — —

— —

— —

— —
— — —
— — —
 
—
1 3
— — —
 
—
1 3
— — —
— — —
— — —
 
—
1 3
— — —
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