esp8266_lgawhp - MQTT bridge for LG AWHP Bridge for 2018+ R32 LG Air/Water-Heat pumps. See https://www.lg.com/de/business/monobloc for more information on the unit.
Based on the results from https://github.com/hww3/LG_Aircon_MQTT_interface
Same as https://github.com/hww3/LG_Aircon_MQTT_interface
Simulate PENKTH000 to leverage power usage control
Complete documentation / usage
Abbrev
Meaning
AWHP Air/Water heat pump
ODU Outdoor unit
IDU Indor unit (monobloc includes this in the ODU), not to be confused with the REMO
REMO Remote for control
Single-wire half-duplex 300 Baud serial bus on the "Signal" line between ODU and REMO
Packets are 20 Bytes in size
Each (non-changing) packet is transmitted twice
Each packet has a checksum in the last byte
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
x0
22
02
08
00
19
00
00
14
2D
00
17
11
26
C0
00
06
40
00
2F
SRC
MODE1
MODE2
MODE3
MODE4
UNK UNK UNK Water_target
DHW_target
UNK Water_In
Water_Out
DHW
UNK UNK UNK UNK UNK ChSum
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
C6
00
00
00
00
00
00
00
00
00
0B
B8
00
00
00
00
D0
07
00
35
SRC
UNK UNK UNK UNK UNK UNK UNK UNK UNK Unit limit
Unit limit
UNK UNK UNK UNK 30010
30010
UNK ChSum
00
01
x5
x6
01
x6
02
x6
03
Connection without GND with Modbus wires A and B
Serial parameters: 9600 baud, 8 bits of data, No parity, 2 Stopp bits (9600 8N2)
Protocol is standard Modbus RTU
Register
Type / length
Content
Unit
30010
uint8 / 1
energy consumption
W
40000
uint32 / 2
impulses per kWh, Connection 1
imp/kWh
40002
uint32 / 2
impulses per kWh, Connection 2
imp/kWh
40004
uint32 / 2
impulses per kWh, Connection 3
imp/kWh
40006
uint32 / 2
impulses per kWh, Connection 4
imp/kWh
