GM4 is a new intelligent heating thermostat for floor warming. It detects the indoor temperature and displays the corresponding value. This device automatically regulates the heating output on 120V/240V in accordance with the set point and the room temperature. The clock controls the 7-day user schedule. It is accurate and sensitive with high reliability and high performance
Parameters
Power Supply | 120VAC/240VAC 50/60Hz | Self-consumption | <2W |
Installation Way | 120V electrical box, deep | Dimension | 120mm ×76mm |
Outer Shell | Tempered glass +PC Alloy | Wiring | Wiring +Terminals |
GFCI | Class A 5mA | Output Load | 15Amp., resistive |
Maximum Power | 120VAC/ 1800W , 240VAC/ 3600W | Accuracy | ±0.1℃(1℉ ) |
Buttons and Display
ON/OFF settings
GFCI Test
When the thermostat is under normal working status, press the GFCI button on the side of the thermostat, then the screen displays GFCI and the thermostat will stop working, GFCI indicator light is ON. Turn off the thermostat and then turn it on again, the GFCI icon will disappear.
Note: GFCI is used to protect the installer from getting shocked. After installation, please test and see if the GFCI function is OK or not.
Local Time Setting
During OFF mode, press S3 to set time and the icon which is blinking is adjustable. Press S1 or S2 to adjust and set value and press S4 to switch to the next setting item. After finishing, press S4 to confirm or wait for 5 seconds to return back to the main interface. During setting, press S3 to return back to the main interface quickly
Working Mode Setting
The default setting as below
Period | 1 | 2 | 3 | 4 |
Mon.–Fri. start time | 5:00 | 7:00 | 17:00 | 22:00 |
Sat.–Sun. start time | 5:00 | 9:00 | 17:00 | 22:00 |
Target temp | 28℃(82℉ ) | 24℃(75℉ ) | 28℃(82℉ ) | 24℃(75℉ ) |
Check temperature
During normal display, press S4 and S5 at the same time to switch and display the ambient and floor temperature.
Lock keys
Under normal display, press S1 and S2 at the same time to lock the keys. The screen displays. After setting, it is invalid to press any button.
Control methods
There are 3 ways to control the thermostat: The thermostat takes floor temperature as its current room temperature; The thermostat takes the temperature detected by a sensor built-in it as its current room temperature; The thermostat takes the temperature detected by sensor built-in it as its current room temperature and the floor temperature as a inspection item to protect the floor. When the room temperature is below the target temperature, the thermostat will start heating and the screen displays When the room temperature is equal to or above the target temperature, the thermostat will stop heating and the icon disappears.
High temperature protection
When the thermostat take the floor temperature as the inspection item, once the floor temperature is above 45℃(113℉ ), the screen displays “FLOOR LIMIT”, and the thermostat will enter into high temperature protection mode, and the thermostat stops heating. When the floor temperature is below 40℃(104℉ ), “FLOOR LIMIT” icon disappears and if the target temperature is higher than the room temperature, the thermostat will start heating.
Sensor failure
If there is failure in the sensor, the screen displays “EEE” at the temperature display area and the thermostat stops heating.
℃ and ℉ scale switch
Under OFF mode, press S3 and S4 at the same time to switch the scale between ℃ and℉.
During OFF mode, press S3 and S5 at the same time to enter into the secret menu. Press S1 or S2 to change the value and input password “1234”, press S5 to confirm. After entering into the hidden menu, press S4 to switch to the next option to set.
No. | Parameter | Default setting | Setting range | Note |
P1 | High-temperature protection temperature | 45℃(113℉ ) | OF/ 45~95℃(113~203℉ ) | OF: Turn off floor temp. protection |
P2 | Room temperature calibration | 0(00) | -9.5℃~9.5℃(-16~16℉ ) | |
P3 | temperature setback value | 2℃(04℉ ) | 0.5~10℃(1~18℉ ) | |
P4 | Button sound volume | 3 | OF/1~9 | OF: OFF 1~9: volume level |
P5 | backlight brightness | NO | NO/OF | ON: Always on OF: backlight off if no operation |
P6 | control method | A-F | A-F/Air/Flo | Air: temp. detected by the built-in sensor is the room temp. Flo: temp. detected by the floor sensor is the room temp. |
P7 | Time format | 24 | 12/24 | 12: 12 hours format 24: 24-hour format |
P8 | Floor temp. calibration | 0(00) | -9.5~9.5℃(-16~16℉ ) | |
P9 | floor temp. control setback value | 1.5℃(03℉ ) | 0.5~10℃(01~18℉ ) | |
P10 | floor protection temp. setback value | 5.0℃(09℉ ) | 0.5~10℃(01~18℉ ) | |
P11 | Target room temperature during remote control mode | 16.5℃(62℉ ) | 5~37℃(41~99℉ ) | |
P12 | Reset to factory default | 53 | 0~99 | change to 55 and press S3 to reset to factory default. |
P13 | Room temperature increasing speed during heating | 5 | 0~99 | 5 means 5*30s=150s, it means the thermostat increase the room temperature every 150s till the actual room temperature. |
P14 | ℃/℉ | OF | OC/OF | OC:℃ OF: ℉ |
P15 | GFCI detecting level | NOR | NOR, 1, 2, 3, OFF | NOR: Once detected, the thermostat will alarm GFCI. 1,2,3: Delay to alam GFCI OFF: Turn off GFCI. |
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