The Thermostat Buttons and Switches
ATTACH THERMOSTAT BASE TO WALL
WARNING: ELECTRICAL SHOCK HAZARD
Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat.
CHECK THERMOSTAT OPERATION: Switch on the thermostat
External temperature sensor function:
When connecting the external temperature sensor, room temperature displays for external temperature, control the outside temperature sensor shall prevail. When there is no connect external temperature sensor with built-in temperature sensor temperature shall prevail.
Fan operation
Heat system operation
Cooling system operation
Configuration Menu
The configuration menu allows you to set certain thermostat operating characteristics to your system or personal requirements. Switch off the thermostat and hold the sleep operation Button ○,5 for over 4second till power on again means you have entered the first configuration menu item. There are 6 menu items. Press button ○,5 to change to the next item. Then press the button ○,5or ○,2 to confirm, and exit preferences return to switch off . Switch on the thermostat and press ○,5 to come to the sleep operation . In the off state, press this button more than 4 seconds. You can cycle into the Implicit menu settings; In Implicit menu settings mode, press button ○,5 more than 4 seconds,it will display dEF, flash three times, All the settings back to the initial value.
Step | Press buttons | Displayed (factory default) | Press▲、▼to select | Descriptions |
1 | ○ ,5 4 seconds | 01 (0) | -3 — +3 | Adjust temperature coefficient |
2 | ○ ,5 | 02(35℃) | 20℃—35℃ | Select maximum setting temperature for heating |
3 | ○ ,5 | 03(5℃) | 5℃—20℃ | Select minimum setting temperature for cooling |
4 | ○ ,5 | 04(rE) | rd, rE | Memorize option before power loss |
5 | ○ ,5 | 05( 1 ) | 1、2、3 | Display backlight option |
6 | ○ ,5 | 06 (On) | OFF/On | Fan stop option |
Communication address setting
Before entering network debugging, need to set the all thermostats communication address and every thermostat communication address is uniqueness and different, or else, the thermostat communication will be broken-down and stop.
In switch off state, long press button ④over 5 seconds till power on again means you have entered communication address setting, press “+” or “-“ to modify the address, the setting range is 1~255, then press the button ②to confirm, and exit communication address setting return to switch off.
CUSTOMER ASSISTANCE After reading this guide, if you have any question about the operation of your
thermostat,please contact your installer or service provider.
Basic description
Number | Parameter | Protocol provision |
1 | Operating mode | RS-485,master-slave;thermostat is the slave machine |
2 | Physical interface | A(+),B(-),GND three-wire system,or A(+),B(-) two- wire system |
3 | Baud rate | 9600 |
4 | Byte format | 10 format(1 start bit+8 data bits +1 stop bit) |
5 | Transmission mode | RTU format(consult MODBUS standard) |
6 | Thermostat address | 1—255 |
7 | Command code | 3,6(3—read thermostat, 6—set thermostat) |
8 | CRC check code | CRC-16(consult MODBUS standard) |
9 | CRC verification mode | CRC-16(consult MODBUS standard) |
10 | Data frame interval | Greater than 4 bytes |
Read the thermostat frame format
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 03 | 00 | 00 | 00 | 08 | CRC low | CRC high |
Read the thermostat frame format
Command frame(given by upper computer): Read the conditioner state
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 03 | 00 | 00 | 00 | 08 | CRC low | CRC high |
Response frame(given by thermostat)
Byte 1 | Byte 2 | Byte 3 | Byte 4…….Byte 19 | Byte 20 | Byte 21 |
Thermostat address | 03 | 10 | Air conditioning state value | CRC low | CRC high |
Air conditioning state value instruction form
Byte | Value | instruction | Register address |
Byte 4 | 00 | Thermostat state is high byte: general is 00 | 0register(ON/O FF) |
Byte 5 | 00/01 | Thermostat state is low byte: 00 –means closed,01—means open | |
Byte 6 | 00 | Thermostat mode is high byte: general is 00 | 1 register (MODE) |
Byte 7 | 01-03 | Thermostat mode is high byte: 1-cooling,2- heating,3- ventilated | |
Byte 8 | 00 | Thermostat fan speed is high byte, general is 0 | 2 register (Fan speed) |
Byte 9 | 00-03 | Thermostat fan speed is low byte | |
00 – Auto speed | |||
01 – High speed | |||
02 – Mid speed | |||
03 – Low speed | |||
Byte 10 | XX | Setting temperature high byte | 3 register (setting temperature) |
Byte 11 | YY | Setting temperature low byte | |
Byte 12 | 00 | Thermostat current temperature high byte | 4 register (room temperature) |
Byte 13 | 00 | Thermostat current temperature low byte | |
Byte 14 | 00 | Reserved words 1 high byte | 5 register (spare) |
Byte 15 | 00 | Reserved words 1 low byte | |
Byte 16 | 00 | Reserved words 1 high byte | 6 register (spare) |
Byte 17 | 00 | Reserved words 1 high byte | |
Byte 18 | 00 | Reserved words 1 high byte | 7 register (spare) |
Byte 19 | 00 | Reserved words 1high byte |
Read the thermostat frame format
Command frame 1:Read the thermostat ON/OFF state
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 03 | 00 | 00(start address) | 00 | 01 | CRC low | CRC high |
Response frame(give by a thermostat)
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
Thermostat address | 03 (command code) | 02 (Byte count) | ON/OFF state high byte | ON/OFF state low byte | CRC low | CRC high |
ON/OFF state value:0000 – Fan coil OFF, 0001 – Fan coil ON
Command frame 2:Read the thermostat mode state
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 03 | 00 | 01(start address) | 00 | 01 | CRC low | CRC high |
Response frame(give by a thermostat)
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
Thermostat address | 03 (command code) | 02 (Byte count) | Mode state High byte | Mode state Low byte | CRC low | CRC high |
Mode state value:0001 – cool, 0002 – heating,0003 –ventilated
Command frame 3:Read the thermostat fan speed
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 03 | 00 | 02(start address) | 00 | 01 | CRC low | CRC high |
Response frame(give by thermostat)
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
Thermostat address | 03 (command code) | 02 (Byte count) | Fan speed High byte | Fan speed Low byte | CRC low | CRC high |
Fan speed state value:0000 – auto,0001 – high,0002–middle,0003– low
Command frame 4:Read thermostat setting temperature
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 03 | 00 | 03(start address) | 00 | 01 | CRC low | CRC high |
Response frame(give by thermostat)
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
Thermostat address | 03 (command code) | 02 (Byte count) | Setting temperature High byte (XX) | Setting temperature Low byte (YY) | CRC low | CRC high |
Setting temperature value 0Xxxyy (0x012c) high byte 01 low byte 2c 0x012c= 300 (setting temperature only can be the multiple of 10,the range is 50~350)setting temperature is 30.0℃
Child lock state:0000 – unlock, 0001– lock
Command frame 5:Read the thermostat current temperature
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 03 | 00 | 04(start address) | 00 | 01 | CRC low | CRC high |
Response frame(give by a thermostat)
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
Thermostat address | 03 (command code) | 02 (Byte count) | Child lock High byte | Child lock Low byte | CRC low | CRC high |
Room temperature value 0Xxxyy (0x012c) high byte 01 low byte 2c 0x012c= 300 the room temperature is 30.0℃
Set the thermostat frame format
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 06 | 00 | 00(start address) | Setting value high byte | Setting value low byte | CRC low | CRC high |
Command frame 1(given by upper computer)set the thermostat ON/OFF
Setting value: 0000 – thermostat OFF, 0001 – thermostat ON;
Response frame: correctly operate, the instruction will return to the same;
Operation is not correct does not response, the upper computer will manage;
The rule about the subsequent response of setup command is same with this.
Command frame 2(give by the upper computer)set the mode
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 06 | 00 | 01(start address) | Setting value high byte | Setting value low byte | CRC low | CRC high |
Setting value: 0001 – cooling, 0002 – heat, 0003 – ventilate;
Command frame 3(give by upper computer)set the fan speed
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 06 | 00 | 02(start address) | Setting value high byte | Setting value low byte | CRC low | CRC high |
Setting value: 0000 – Auto speed, 0001- High speed, 0002- Mid speed, 0003- Low speed
Command frame 4(give by upper computer)set the setting temperature
Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 | Byte 8 |
Thermostat address | 06 | 00 | 03(start address) | Setting temperature high byte | Setting temperature low byte | CRC low | CRC high |
High byte 01 Low byte 2c 0x012c= 300 (setting temperature only can be multiple of 5, the range is 50~350)setting temperature is 30.0℃
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