Normal Control; List Of Functions In Normal Control - Daikin VRV RXYMQ-A Series Service Manual

Normal Control

5. Normal Control
5.1

List of Functions in Normal Control

Pc : High pressure sensor detection value
Pe : Low pressure sensor detection value
Tc : High pressure equivalent saturation temperature
Te : Low pressure equivalent saturation temperature
Cooling
Part Name
Compressor motor
Fan motor
Electronic expansion valve
(Main)
Electronic expansion valve
(Injection)
Electronic expansion valve
(Refrigerant jacket)
Electronic expansion valve
(Refrigerant auto charge)
Four way valve
: equipped
—: not equipped
Heating
Part Name
Compressor motor
Fan motor
Electronic expansion valve
(Main)
Electronic expansion valve
(Injection)
Electronic expansion valve
(Refrigerant jacket)
Electronic expansion valve
(Refrigerant auto charge)
Four way valve
: equipped
—: not equipped
54
Electric
RXYMQ-A
Symbol
M1C

M1F

Y1E

Y2E

Y3E

Y4E

Y1S

Electric
RXYMQ-A
Symbol
M1C

M1F

Y1E

Y2E

Y3E

Y4E

Y1S

Function
PI control by Te target.
Fan speed 9 steps to keep minimum Tc target 41°C.
0 pulse: closed (thermostat OFF)
0-480 pulses: open (thermostat ON)
0-480 pulse at compressor ON
480 pulse
Minimum pulse
OFF
Function
PI control by Tc target.
Fan step 7Y (normal Tc & Te) or Fan step 8 (high
load).
0 pulse: closed (thermostat OFF),
0-480 pulses: SH control 5K
0-480 pulses at compressor ON: based on indoor
demand.
0 pulse: closed
0-480 pulse: open (when fin temperature increases)
Minimum pulse
ON
Part 4 Functions and Control
SiME332106E