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Technical data
Service manual
427
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
REYQ14~20 Defrost/oil return operation in heating
R1T
R7T
R3T
Y2E
R6T
R14T
R4T
Y1E
Y3E
Y5E
R5T
R11T
R8T
R9T
Y6E
Y5S
Y4S
Y11S
Y12S
R22T
R15T
R12T
R13T
R10T
18-20HP
S1NPH
S1NPL
S2PH
HPS
R21T
S1PH
HPS
Y3S
M1F
Y2S
SV
SV
SV
M
Y4E
EVL
4
5
6
c
b
a
1
2
3
EVH
EVSC
EVL EVH
EVSC
EVL EVH
EVSC
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
Summary of Contents for VRV IV+
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