Daikin EWAQ032BAW - Basic Control; List of Functions in Normal Operation; Normal Operation

Basic Control ESIE11-05
42 Functional Description
2. Basic Control
2.1 Normal Operation
2.1.1 List of Functions in Normal Operation
*1 Only for EW*Q040BA, 050BA, 064BA module.
Part Name Symbol
(Electric
Symbol)
Function of Functional Part
Normal Cooling Normal Heating
Compressor  (M1C, M2C)
PI control, High pressure
protection, Low pressure
protection, Td protection,
INV protection
PI control, High pressure
protection, Low pressure
protection, Td protection,
INV protection
Outdoor unit fan (M1F) Cooling fan control Step 7 or 8
Four way valve 20S1 (Y1R) OFF ON
Main electronic expansion
valve
EV1 (Y1E) 480 pls PI control
Subcool heat exchanger
electronic expansion valve
EV2 (Y2E) PI control PI control
Hot gas bypass valve SVP (Y1S) OFF
Energized when the system is set
to low pressure control mode
Accumulator oil return valve SV0 (Y2S) ON ON
Hydrobox electronic
expansion valve Y3E
EV3 PI control PI control
Hydrobox electronic
expansion valve Y4E (*1)
EV4 PI control PI control