Precautions Before Operation; Dial Code Description; Symbol Description - Haier InoSens MRV SI AU032FSEUA Service Manual

AU052FPEUA AU072FPEUA
Wiring Diagram
【
outdoor power supply
*
L N
6.3 A 250V AC
FUSE1
CN16
4WV
white
CN17
yellow
H EA TER
CN25
green
CN10
white
CN21
red
red yellow
CN8 CN7
T A
PQ
The two"* outdoor power supplies"shown
in the figure are the same terminal block.
indoor communication
【High Voltage Warning
The control box is equipped with high-voltage components
Please turn off the power and keep the unit shut down for more than 10 minutes and ensure that voltage between P and N
on the frequency conversion board is reduced to DC 20V or less before checking the inside of the control box.

【Precautions Before Operation】

·It is not allowed to connect the power line to the P and Q terminals. These terminals are used to connect the control
signal lines.After connection, the printed circuit board will be burned.
·After the initial installation, please confirm that the power supply voltage of the indoor unit and outdoor unit is normal.
Before trial operation, ensure that the outdoor unit is powered on for more than 12 hours to fully warm up the compressor.
·When the outdoor unit leaves the factory, the dial code BM1_1 is set to the OFF state by default.
The commissioning personnel shall confirm that the number of indoor unit displayed on the display board is consistent with
the number of indoor unit actually connected and the type of power supply and outdoor unit capacity are consistent with
the parameters marked on the outdoor unit nameplate, then this dial is set to the ON state;If it is inconsistent,
the outdoor unit cannot detect some indoor unit or the dial setting of the outdoor unit is wrong.
At this time, do not force the dial to ON, which will cause the unit to malfunction or damage.

【Dial Code Description

dial [1] [2] [3] [4] [5] [6] [7] [8]
1 0 0
BM1 - 0 0 0 0
1 1 0
【 Symbol Description 】
symbol description
ACL
Live line
ACN
Neutral line
HE A TER
Compressor heating belt
SV1
Unloading solenoid valve
Pd/Ps
High /low pressure sensor
Tc
Gas/liquid tube sensor
Tfin
Module temperature sensor
DC FAN1/2
DC fan
4WV Four-way valve
】
M
CN12
white DC FAN1
DC FAN2
CN13
white
M
BM1
red black blue blue red
white
white
CN3 CN6 CN4 CN23 CN5 CN29 CN28
T D TS TE1 T c
】
】
model
O represent OFF
5.0 1 represent ON
- represent need to be setting when installing
7.0

symbol description

HPS
High pressure switch
LEVa
Electronic expansion valve
TD
Exhaust temperature sensor
TE1
Defrost temperature sensor
T S
Intake temperature sensor
T A
outdoor temperature sensor
LEVb
Electronic expansion valve
PC PC connection tooling
CN12
PE
white
ACL-OUT
AC-N
AC-L
DCPL1
ACN-OUT
DCPL2 CN9
white
CN1
compressor
white
W
black
V
COMP
white
U
green
red
CN17
Tfin
red blue
L N yellow / green
outdoor power supply
*
20
0150541651