Daikin FTXS30HVJU - Electronic Expansion Valve Control

Control Specification SiUS04-924
Function and Control 37
3.11 Electronic Expansion Valve Control
Outline The following are control examples that function in each mode with the electronic expansion valve
control:
Electronic expansion valve is fully closed
1. Electronic expansion valve is fully closed when turning on the power.
2. Pressure equalizing control
Open Control
1. Electronic expansion valve control when starting operation
2. Control when frequency changes
3. Control for defrosting
4. Control when a discharge pipe temperature is abnormally high
5. Control when the discharge pipe thermistor is disconnected
Detail Feedback Control
1. Discharge pipe temperature control
(R2833)
×


×


×
×

×
×
×
×

×
×

×
×
×
×
×
Fully closed when power is turned ON
Open control when starting
(Control of target discharge pipe temperature)
Pressure equalizing control
Open control when starting
(Control of target discharge pipe temperature)
(Defrost control FD=1)
Pressure equalizing control
Open control when starting
Continue
Pressure equalizing control
Control when frequency changed Control for abnormally high discharge pipe temperature
When power is turned ON
Cooling operation
Stop
Heating operation
Stop
Heating operation
Control of discharge pipe
thermistor disconnection
Stop
Operation pattern
 : function
× : not function