PyHaier 0.1.4

Very simple library to manipulate the basic parameters of the Haier heat pump.

PyHaier

Very simple (for now) library to manipulate the basic parameters of the Haier heat pump.

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Version

0.1.3

• Fix function SetState

0.1.2

New function:

• Get value of Twi and Two parameters (not 100% sure if this is OK.)

0.1.1

New function:

• Get current DHW tank temperature

0.1.0

Basic function:

• Get current state
• Get current mode
• Get current Heating temperature
• Get current DHW temperature
• Set state
• Set mode
• Set Heating temperature
• Set DHW temperature

Tested with

1. AU082FYCRA(HW)
2. AU162FYCRA(HW)

However, it should work with all pumps that feature the YR-e27 remote control

Instalation

Install from source

$ git clone https://github.com/ktostam/PyHaier.git
$ cd PyHaier
$ python setup.py install

Usage

PyHaier.GetState(payload)

Display current state (Cool/Heat/Tank/Cool+Tank/Heat+Tank/Off).

You need provide payload for GetState function. payload is the contents of holding registers 101-106

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PyHaier.GetMode(payload)

Display current Mode (ECO/Silent/Turbo).

You need provide payload for GetMode function. payload is the contents of holding register 201

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PyHaier.GetCHTemp(payload)

Display current water temperature with precision 0.5°C

You need provide payload for GetMode function. payload is the contents of holding registers 101-106

---

PyHaier.GetDHWTemp(payload)

Display current DHW temperature with precision 1°C

You need provide payload for GetMode function. payload is the contents of holding registers 101-106

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PyHaier.GetDHWCurTemp(payload)

Display current DHW temperature in Tank with precision 0.1°C

You need provide payload for GetDHWCurTemp function. payload is the contents of holding registers 141-156

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PyHaier.GetTwiTwo(payload)

Display Twi and Two parameters with precision 0.1°C, output is an array

You need provide payload for GetTwiTwo function. payload is the contents of holding registers 141-156

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PyHaier.SetState(current,new)

Create Modbus frame to set new pump state

You need provide payload for SetState function. payload is the contents of holding registers 101-106

new can be:

• off
• on
• C for Cool
• H for Heat
• T for Tank
• CT for Cool+Tank
• HT for Heat+Tank

---

PyHaier.SetMode(new)

Set mode (eco/silent/turbo).

You need provide new for SetMode function. new can be:

• eco
• silent
• turbo

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PyHaier.SetCHTemp(current, new)

Set water temperature with precision 0.5°C

You need provide current for SetCHTemp function. current is the contents of holding registers 101-106

new is new temperature with precision 0.5°C

---

PyHaier.SetDHWTemp(current, new)

Set DHW temperature with precision 1°C

You need provide current for SetDHWTemp function. current is the contents of holding registers 101-106

new is new temperature with precision 1°C

Example script 1

from pymodbus.client.sync import ModbusSerialClient
import PyHaier

# Serial setting
client = ModbusSerialClient(method = "rtu", port="/dev/ttyAMA0", stopbits=1, bytesize=8, parity='E', baudrate=9600)

# connect to serial
client.connect()

#read holding registers from 101 to 106
payload=client.read_holding_registers(101, 6, unit=17)
state=PyHaier.GetState(payload.registers)
htemp=PyHaier.GetCHTemp(payload.registers)
dhwtemp=PyHaier.GetDHWTemp(payload.registers)
payload=client.read_holding_registers(201, 1, unit=17)
mode=PyHaier.GetMode(payload.registers)
client.close()
print("Pump status:\t"+state+"\nPump mode:\t"+mode+"\nWater temp:\t"+str(htemp)+"\nDHW temp:\t"+str(dhwtemp))

Output

$ python script.py
Pump status:	Heat+Tank ON
Pump mode:	silent
Water temp:	25.0
DHW temp:	43.0

Example script 2

from pymodbus.client.sync import ModbusSerialClient
import PyHaier

# Serial setting
client = ModbusSerialClient(method = "rtu", port="/dev/ttyAMA0", stopbits=1, bytesize=8, parity='E', baudrate=9600)

# connect to serial
client.connect()

#read holding registers from 101 to 106
payload=client.read_holding_registers(101, 6, unit=17)
state=PyHaier.GetState(payload.registers)
print("Current state:\t"+state)
new=PyHaier.SetState(payload.registers,"CT")
client.write_registers(101, new , unit=17)
payload=client.read_holding_registers(101, 6, unit=17)
state=PyHaier.GetState(payload.registers)
print("New state:\t"+state)
client.close()

Output

$ python script.py
Current stete:	Heat+Tank ON
New state:	Cool+Tank ON

License

GNU AGPL v3.0 ©Jacek Brzozowski