Midea VRF Series User Manual

 V6R VRF 50/60Hz
79
Part 5 - Electrical Components and Wiring Diagrams
Figure5‐7.2:MS01wiringdiagram

T1C1
Power in
Outdoor
/Upstream MS
Downstream MS
T2C2
Blue
Red
XS2 XS1
XP2 XP1
The wiring picture shown is for reference only, actual product may vary.
Guide for main board dial code
CODE NAME
XS1～XS2 Connectors XP1～XP2 Connectors T1C1～T2C2
Temperature Sensor
EEV Electronic ExpansionValv e
Error Code
E3
E4
Communication failure between MS and master outdoor unit
E2
F7 Main power off
DIP switch for number of refrigerant leakage sensors Note,Under normal circumstances, MS is connected to the closing signal output by the refrigerant sensor. When Ms detects the opening signal of the refrigerant sensor, it indicates that there is refrigerant gas leakage.
ENC1
POWER
EBV-B
SW1 SW2
DSP1
DSP2
EBV-A T1C1T2C2
S1S2
ON
SW4
ENC1
S1-1 OFF: refrigerant leakage function invalid. (default) ON: connected to refrigerant leakage sensor. S1-2 OFF: dry contact is always closed, and opened when being triggered by refrigerant leakage. (default) ON: dry contact is always opened, and closed when being triggered by refrigerant leakage.
S2
ON
SW3
EBV-C EBV-BEEV
EBV-A
EBV-C
EEV
Main Board
“ +5V GND +12V ” ONLY USED FOR TESTING
ON/OFF SWITCH
CN7 CN6 CN3CN5 CN4 CN1 CN2
Malfunction of subcooler outlet thermistor(T1C1) EEPROM error
UPS
EBV-A
～
EBV-C
Malfunction of subcooler inlet thermistor(T2C2)
E7
F6
Electronic ball valve connection failure
F9
A1 FE
MS has no address when first powered on
Overload error(The total capacity of indoor unit connected by MS is more than 12 )
Refrigerant leakage protection or ENC1 DIP switch value >5
Electronic BallValve
S1
ON
XT1
XT1 XT2
Refrigerant
leakage sensor
Te r m i n a l B l o c k Te r m i n a l B l o c k
( Current range: 0-1A)
（Voltage range: 0-24V AC/DC)
L N
M-O
M-I
P Q E
T
o
i
n
d
o
o
r
u
n
i
t
s
c
o
m
m
.
b
u
s
White
Bule
Yellow
Gray
LN
Black Black
S1-1 OFF: low temperature cooling function valid.(default) ON: low temperature cooling function invalid. S2-2 Reserved
P Q E P Q E
Refrigerant
leakage sensor
Refrigerant
leakage sensor
Refrigerant
leakage sensor
Y/G
COM NC
Refrigerant
leakage sensor
COM ON/OFF
(Voltage range:0-12V/DC)
Y/G

Midea VRF Series Specifications

General

Compressor Type	Inverter Scroll Compressor
Type	Variable Refrigerant Flow (VRF)
Refrigerant	R410A
Control	Centralized control, individual control
Indoor Unit Types	Wall mounted, cassette, ducted, floor standing
Energy Efficiency	High energy efficiency with DC inverter technology
Indoor Unit Noise Level	19 dB(A) to 45 dB(A)