Actuators - Daikin GYEQ20AN Service Manual

Control Overview
1.3

Actuators

Table 3.3/ Operation of each actuator
Name
Gas 1 & 2
Fuel control valve
Throttle valve
Fans 1, 2 & 3
Cooling water pump
Four-way valve 1
EV1 (outdoor electronic expansion valve)
EV2 (outdoor electronic expansion valve)
EV3 (outdoor electronic expansion valve)
EV4 (outdoor electronic expansion valve)
EV5 (outdoor electronic expansion valve)
EV6 (outdoor electronic expansion valve)
EV7 (outdoor electronic expansion valve)
EV3A (outdoor electronic expansion valve)
EV3B (outdoor electronic expansion valve)
Clutches 1 & 2
Compressor heaters 1 & 2
Oil separator heater
Accumulator heater
Oil return heater
SV1 (solenoid valve)
SV2 (solenoid valve)
SV3 (solenoid valve)
SV4 (solenoid valve)
SV6 (solenoid valve)
SV7 (solenoid valve)
SV8 (solenoid valve)
SV9 (solenoid valve)
SV10 (solenoid valve)
SV12 (solenoid valve)
SV31 (solenoid valve)
SV32 (solenoid valve)
SV37 (solenoid valve)
SV3A (solenoid valve)
SV3B (solenoid valve)
SV3C (solenoid valve)
SV3D (solenoid valve)
SV3E (solenoid valve)
SV3F (solenoid valve)
SV3G (solenoid valve)
SV3H (solenoid valve)
: Normally ON ∆: Turned ON/OFF or opening degree varied by the control function specific to that actuator -: Normally OFF
Thermo-OFF/operation-OFF: Outdoor unit is in pump down operation.
System stop: Outdoor unit is stopped (including stop of outdoor unit due to thermo-OFF).
∗ Whether each of the actuators listed exists depends on the model and version.
95
Cooling Concurrent
dehumidi- Heating cooling/
fication heating
∆ ∆ ∆
∆ ∆ ∆
∆ ∆ ∆
∆
— —
∆ ∆ ∆
∆ ∆ ∆
∆ ∆ ∆
∆ ∆ ∆
∆ ∆ ∆
∆ ∆ ∆
∆ ∆
—
∆
— —
∆
— —
∆ ∆ ∆
— — —
— — —
— — —
— — —
∆ ∆
—
∆ ∆
—
∆ ∆ ∆
∆ ∆ ∆
∆
— —
∆ ∆ ∆
∆ ∆
—
∆ ∆ ∆
∆
— —
∆ ∆ ∆
∆ ∆ ∆
∆ ∆ ∆
∆ ∆ ∆
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
Thermo-
OFF
Blowing Defrosting
Operation
-OFF
∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆
—
∆
— —
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
— — —
∆
— —
∆
— —
∆ ∆
—
— —
∆
— —
∆
— —
— —
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆
— —
∆ ∆
—
— — —
∆
— —
∆
— —
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
∆ ∆
—
Control and Functionality
SiAUY361411EA
System
Remarks
stop
—
—
—
—
—
Normal
∆
heating
—
—
∆
—
—
—
—
—
∆
—
∆
∆
—
—
—
—
—
—
—
—
—
—
Normally
—
open
—
—
∆
∆
∆
∆
∆
∆
—
—