Daikin VRV IV+ Service Manual page 427

REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
REYQ14~20 Defrost/oil return operation in heating
1
4 5
EVL EVH
EVSC
R7T
Y2E
R1T
R8T
Y5S
R9T
Y4S
Y3S
S1NPH
S2PH
R22T
18-20HP
R15T
R10T
1 Indoor Unit, Unit OFF, Fan OFF, Indoor electronic expansion valve 224 pulse
2 Indoor Unit, Unit ON, Heating, Thermo OFF, Fan ON, Indoor electronic expansion
valve 224 pulse
3 Indoor Unit, Unit ON, Heating, Thermo ON, Fan ON, Indoor electronic expansion
valve Open
4 Branch selector box, electronic expansion valve high pressure ON, electronic
expansion valve low pressure ON
5 Branch selector box, electronic expansion valve high pressure ON, electronic
expansion valve low pressure ON
2 3
6
EVL EVH EVL EVH
EVSC
R3T
Y2S
SV
Y4E
R6T
M1F Y6E R14T
M
R4T
R5T
R11T
Y5E
S1PH
HPS
R21T
R12T
6 Technical data
|
EVSC
a
b
c
Y1E
Y3E
HPS
Service manual
427