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6
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Technical data
Service manual
407
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
6.3.2 Refrigerant flow diagram: Outdoor unit
REMQ5 + REYQ8~12 Cooling mode
R1T
R7T
R3T
Y2E
R6T
R14T
R4T
Y1E
Y3E
Y5E
R5T
R11T
R8T
R9T
Y6E
Y5S
Y4S
Y11S
R21T
R15T
R12T
R13T
R10T
10-12HP
S1NPH
S1NPL
S1PH
HPS
Y3S
M1F
Y2S
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 0 pulse
2
Indoor unit, unit ON, cooling, thermo OFF, fan ON, indoor electronic expansion
valve 0 pulse
3
Indoor unit, unit ON, cooling, thermo ON, fan ON, Indoor electronic expansion valve
superheat Control
4
Branch selector box, electronic expansion valve high pressure OFF, electronic
expansion valve low pressure OFF
Summary of Contents for VRV IV+
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