Alloy Home MH4 User manual

Electrical Heating
Thermostat
MH4

Electrical Heating Thermostat MH4
SPECIFICATION
• Power supply: AC120V/AC240V, 60Hz
• Max output: 1800W at 120AC ; 3600W at 240AC
• Self-consumption: <2W
• Temp. format: ºC/ºF ; Time format: 12h / 24h
• Z-Wave frequency: 908.42MHz, 941.42MHz or other customized frequency
• Panel dimension: 76*120*20mm
• Vertical installation: hole pitch 82mm (American 120 box)
SAFETY INFORMATION
To protect yourself and others from danger and to protect the device from damage,
please read the safety information before using it.
Important!
• A qualied electrician with an understanding of wiring diagrams and knowledge of
electrical safety should complete the installation following these instructions.
• Before installation, conrm the actual voltage complys with the device’s specication.
• Cut o any power supply to secure the safety of people and device.
• During installation, protect the device from any physical damage such as dropping
or bumping. If this does happen, please contact the supplier.
• Keep the device away from corrosive solids, liquids, and gases to avoid damage.
• Avoid overexertion during operation, to protect device from mechanical damage.
• Read all instructions and save them for future reference.

INSTALLATION & WIRING
Location: Indoor installation recommended, approximately 4.5’ to 5’ above the oor so as
to accuratley asses the average room temperature. It should be away from direct sunlight,
any cover or any heat source to avoid an inaccurate reading for temperature control.
CAUTION: Cut o power supply at circuit breaker or fuse before installation to avoid re, shock or death!
Step 1: Separate the device with a at-head screwdriver into two parts: the display panel
and the bottom case.
Step 2: Insert all wires into the right terminals and tighten screws. Wiring diagram is
shown below.
Step 3: Push the bottom case into the junction box and secure it with two screws, and
then mount the touch panel back.
Step 4: Conrm the device is well mounted, power on and it is ready to operate.

Note:
Setback (terminals 3 & 4): the input terminal controlled by remote; one terminal con-
nects to the internal power source with a 10K resistor, the other terminal connects to
the internal ground wire.
Relout (terminals 5 & 6): the output terminal controlled by remote; inside circuit is a OC
output, it can drive a relay that below 24V directly. The maximum drivable current is
30MA. The internal circuit is shown above.

OPERATION
On/O Operation
• ON: When it displays OFF, slide up the ON/OFF button to turn it on. Local time, the
corresponding temperature, working mode and output status will be displayed on
the screen.
• OFF: In normal working interface, slide down the ON/OFF button to turn it o. It
will display OFF on the screen and all outputs will be closed.
GFCI Test
1 - Set the thermostat to heating mode. Adjust the set point to make sure the heater
engages.
2 - Press the GFCI button. Observe the GFCI icon displays on the screen, the heater shuts
o and the indicator light is on. If not, replace the thermostat.
End GFCI test: Slide the ON/OFF button to OFF and then to ON. The device will resume
normal operation.
Note: There is an electric leakage protector inside the thermostat. It is used to protect
the operator from electric shock when the system is damaged.
Local Time Setting
In shutdown mode, long press button to enter into the Time settings interface.
The blinking icon is the current modiable item, press or button to set the
values; press button to switch the setting value. Then press button to conrm

or delay for 10s without any operation to save all the values and return to the normal
working interface automatically. During setting, press button at any time, which will
return to the normal working interface and the values will be saved.
Working Mode Setting
• Icon displays on the screen indicates it is in Time Period Mode;
• Icon displays on the screen indicates it is in Manual Mode;
• Icon displays on the screen indicates it is in Energy-saving Mode;
• Icon displays on the screen indicates it is in Vacation Mode;
When the corresponding working mode icon is blinking, press button to conrm.
Or, wait 10s to save the values and return to the normal interface automatically.
Temperature Setting
In any mode, press or button to enter the temperature settings interface. “Set
Temp” then blinks on the display:
• Press button to decrease the temperature, press button to increase the
temperature.
• After changing the temp settings, long press or button to
decrease/increase the temperature continuously.
• When done, press button to conrm, or wait 10s to save and return to the
main menu.

Check the Temperature
Press and buttons simultaneously. The displayed temperature will be
switched between the room temp and oor temp .
Keypad Lock
Press and buttons simultaneously to lock the keypad. The lock icon
displays on the screen. While the keypad is locked, you cannot make any changes. Press
and buttons simultaneously to unlock the keypad. The icon then disappears
and the keypad is back to its normal state.
Output Control
• Floor Temperature Control Mode
: Floor Temperature Control, : Room Temperature Control,
: Room Temperature Control with oor high temperature protection.
When the icon displays it indicates the system is in Floor Temperature control
mode. The icon displays beside the temperature value, indicating the current
detected temperature is the oor temperature. When the detected oor temperature
is ≤ the set temperature by -1.5°C, heating engages and the icon displays on the
screen. When the detected oor temperature ≥ the set temperature, heating turns o
and the icon disappears.
• Room Temperature Control Mode
When the icons display on the screen indicates the system is in Room
Temperature Control Mode. The icon displays on the screen, indicating the current
displayed temperature is the indoor temperature. When the detected indoor tempera-
ture ≤ the set temperature by 2.5°C, heating engages and the icon displays on the

screen. When the detected indoor temperature ≥ the set temperature, heating turns o
and the icon disappears.
• Room Temperature Control, Floor High Temperature Limit Mode
If the icon displays on the screen, it indicates the system is in Room
Temperature Control, Floor High Temperature Limit Mode. When the icon displays,
it indicates the current temperature display is the indoor ambient temperature. When
the detected indoor temperature ≤ the set temperature by -2.5°C, the heater will turn
on and the icon will display. When the detected indoor temperature ≥ the set tem-
perature, the heater will turn o and the icon will disappear. Pressing and
buttons simultaneously will switch the displayed temperature the oor temperature and
the icon will display. When the temperature is higher than 45°C (113°F), the heater
shuts o and the
FLOOR LIMIT
icon displays on the screen to avoid overheating the oor.
When the oor temperature reduces to 40°C (104°F), the heater will turn on and the
FLOOR LIMIT
icon disappears.
Temperature Unit Switching
In the shutdown interface, long pressing and switches the temperature unit
settings.
Z-Wave Network Inclusion and Exclusion
Press and hold to enter the Z-Wave Network inclusion and exclusion menu. If the device is
not included in a network, “- - -” displays on screen. Press once and the device enters into
learning mode to get a node ID. If inclusion is successful, a node ID will display on the screen.
After inclusion, turn the device o and then on. The device is now ready to be operated by
the Z-Wave network controller/gateway. Note: Follow the same steps to exclude the device
from the network.

Conguration of User Parameters (Hidden Menu)
In the shutdown interface, press and simultaneously to enter into the param-
eters menu. Then, if applicable, input password 1234 using “Up” and “Down” buttons.
Press to switch, then press the “Conrm” button to enter into the setting interface:
No. Parameter Default Range Note
P1 High Temp Protection 45°C
(113°F)
OF/45°~95°
(113°-203°)
OF: Turn o the oor high temp
protection
P2 Room Temperature
Calibration
0 (00) -9.5~9.5°C
(-16~16°F)
P3 Temperature Backlash
Value
2°C (4°F) 0.5~10°C
(1-18°F)
P4 Key Volume Level 3OF/1~9 OF: OFF
1~9: Key Volume
P5 Backlight Brightness NO NO/OF NO: Always on
OF: Backlight Energy Saving
P6 Control Mode A-F A-F/Air/Flo Air: Ambient Room Temperature
Control Mode
Flo: Floor Temperature Control Mode
A/F: Room Temperature Control with
Floor High Temperature Limit Mode
P7 Time System 24 12/24 12: 12-hour time system
24: 24-hour time system
P8 Floor Temp Calibration 0 (00) -9.5~9.5°C
(-16~16°F)
P9 Floor Temp Control
Backlash Value
1.5°C
(3°F)
0.5~10°C
(01~18°F)

No. Parameter Default Range Note
P10 Floor Protection Temp
Backlash Value
5°C (9°F) 0.5~10°C
(01~18°F)
P11 Remote Control Mode
Temp Setting
16.5°C
(62°F)
5~37°C
(41~99°F)
P12 Factory Reset 53 0~99 Set to 55 then press S3
to conrm Factory Reset
P13 Heating Temp
Increasing Speed
5 0-99
P14 Celsius/Fahrenheit OC OC/OF OC: Celsius
OF: Fahrenheit
(After settings modication,
to restore factory settings)
TROUBLESHOOTING
Problem Solution
Thermostat functions but no
heat from the system
1. Check wiring instructions and wire identication
2. If the GFCI is tripped, reset the thermostat with the side switch
3. Check the resistance of the oor warming system. Refer to the
cable manufacturer installation manual
No Display Check wiring connection on the back of the unit
GFCI is tripped 1. Check wiring connections
2. Reset thermostat by switching o then back on
3. Check resistance of the oor warming system. Refer to the
cable manufacturer installation manual

Problem Solution
Heat occurs at wrong time Check the current time and schedule are properly set at AM or
PM
Error EEE Check oor sensor resistance. Change if out of range
FCC Warning (Part 15.21) (USA only)
Changes or modications not expressly approved by the party responsible for compli-
ance could void the user’s authority to operate the equipment.
FCC Interference Statement (Part 15.105 (b)) (USA only)
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment o and on, the
user is encouraged to try to correct the interference by one of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit dierent from that to which
the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

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1 YEAR LIMITED WARRANTY We warrant this product to be free from defects in material and workman-
ship under normal and proper use for one year from purchase date of the original purchaser. We will,
at its option, either repair or replace any part of its products that prove defective by reason of improper
workmanship or materials. THIS LIMITED WARRANTY DOES NOT COVER ANY DAMAGE TO THIS PROD-
UCT THAT RESULTS FROM IMPROPER INSTALLATION, ACCIDENT, ABUSE, MISUSE, NATURAL DISASTER,
INSUFFICIENT OR EXCESSIVE ELECTRICAL SUPPLY, ABNORMAL MECHANICAL OR ENVIRONMENTAL CON-
DITIONS, OR ANY UNAUTHORIZED DISASSEMBLY, REPAIR OR MODIFICATION. This limited warranty shall
not apply if: (i) the product was not used in accordance with any accompanying instructions, or (ii) the
product was not used for its intended function. This limited warranty also does not apply to any product
on which the original identication information has been altered, obliterated or removed, that has not
been handled or packaged correctly, that has been sold as second-hand or that has been resold contrary
to Country and other applicable export regulations.