Electronic Expansion Valve Control - Daikin 2MKS40G2V1B Service Manual

Control Specification

4.11 Electronic Expansion Valve Control

Outline The following items are included in 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
Room Distribution Control
1. SC (subcooling) control
2. Heat exchanger isothermal control during heating
3. Liquid pipe isothermal control during heating
4. Gas pipe isothermal control during cooling
Open Control
1. Electronic expansion valve control when starting operation
2. Electronic expansion valve control when frequency changed
3. Electronic expansion valve control for defrosting
4. Electronic expansion valve control for oil recovery
5. Electronic expansion valve control when a discharge pipe temperature is abnormally high
6. Electronic expansion valve control when the discharge pipe thermistor is disconnected
7. Electronic expansion valve control for anti-icing control for indoor unit
Feedback Control
1. Discharge pipe temperature control
91
SiBE12-816_D
Function and Control