Operation key
O
symbols
represent
A
Turn ON/OFF: Short press to turn on/ turn off
B
to switch automatic mode and manual mode
2 Turn on thermostat long press for 3-5 seconds to enter into programmable
setting
3. Turn off thermostat long press for 3-5 seconds to enter into advanced setting
C
1 Confirm key: use it with
2 Only short press it to set time
3 Turn on thermostat long press it for 3-5seconds to holiday mode setting. Appear
OFF press or
change to ON then press to confirm opening holiday mode
B
2 Long press to lock /unlock
D
2 Long press to inquire external sensor temperature
3 In the Auto model press or
enter to
temporary manual mode
Programmable
5+2 (factory default) 6+1 and 7 models 6 times period setting for user choose. In the advanced options
choose model of you need under power on state long press for 3-5 seconds enter into programming
mode setting then short press choose: hour minute time period and press and to adjust
data finished setting about 10 seconds will automatic save and exist.
Outdoor Back home Outdoor Back home Sleep
6：00 20℃ 8：00 15℃ 11：30 15℃ 13：30 15℃ 17：00 15℃ 22：00 15℃
The optimum comfort temperature is 18℃-22℃.
Advanced options
Under turn off state long press for 3-5 seconds to access advanced setting.
From A1 to AD short press to choose the option and adjust data by short press to switch
next option. Remain about 5 seconds after finish setting will quit setting.
NO Setting Options Data Setting Function Factory Default
A1 Measure Temperature
Calibration -9-+9℃ 0.5℃ Accuracy
Calibration
A2 Temperature control
return difference setting
0.5-2.5℃ 1℃
A3
External sensors limit
temperature control
return difference
1-9℃
2℃
A4 Options of sensor control N1:Built-in sensor (high temperature protection NI
close)
N2:External sensor (high temperature protection
close)
N3:Built-in sensor control temperature external
sensor limit temperature (external sensor detect
the temperature is higher than highest
temperature of external sensor thermostat will
disconnect relay turn off load)
A5 Children lock setting 0:half lock 1:full lock 0
A6
Limit value of high
temperature for external
sensor
1. 35℃-70℃
2. Under 35℃ screen display【--】, high
temperature protection was canceled
45℃
A7
Limit value of low
temperature for external
sensor(anti-freeze
protection)
1. 1-10℃
2. Exceed 10℃ screen display【--】, Low
temperature protection was canceled. 5℃
A8 Setting temp lowest limit 1-10℃ 5℃
A9 Setting temp highest
Limit
20-70℃ 35℃
AA Descaling function
0:Close descaling function
1:Open descaling function（valve is continuously
closed over 100 hours，it will be opened for 3
minutes automatically）
0:Close
descaling
function
AB
Power with memory
function
0:Power with memory function
1:Shutdown power after power off
2:Shutdown power after power on
0:Power with
memory
function
AC
Weekly programming
selection
0: 5+2
1: 6+1
2: 7
0: 5+2
AD Restore factory defaults Display A o press key whole show
AE Time setting of turn on
night light (HY311 model)
1: 00:00-23:30 & 2: 00: 00 press”
and
display-- it means cancel night light function 18:00
AF Time setting of turn off
night light (HY311 model)
1: 00:00-23:30
6:00
Return difference
:
Max limit value of external sensor is 45℃ for factory default (A6) value of external
sensor control return difference (A3) is 2. when temperature rise to 45℃ the relay stop working and
trigger high temperature alarm. If temperature drop to 43℃ then relay continue to work and heating
alarm will go off. (on that event the operation of heating resume only when indoor temperature is lower
than setting temperature i-e heat demand)
Sensor fault display
: Please ensure to have correct way of working for built-in and external sensor if
connect wrongly or sensor fault (breakdown) “E1” or “E2” will be displayed on the screen. Thermostat
will stop heating until the fault is eliminated.
Warranty：We offer operation warranty of 18 months from date of sales to cover any issue due to quality
and workmanship defect. service.
