MH-3928 thermostat is used to control up to 3 stages heating and 2 stages cooling system with 8 types control system, EM heat activation, adjustable compressor delay time and O/B changeover. It is with tempered touch capacitive button, quick connecting terminals to save installer’s time. Support S2 function.
Warnings
CAUTIONS
CAUTIONS
MERCURY NOTICE
Note
No | Type | Working mode | Output Stage | Termimals(cool) | Termimals(heat) |
0 | 2C(conventional) | OFF | 2th cooling | GYI Y2 | |
COOL | 1th cooling | GYI | |||
2H(conventional) | OFF | 2th heating | GWI W2 | ||
HEAT | 1th heating | GWI | |||
2H/2C(conventional) | COOL | 2th cooling | GYI Y2 | ||
OFF | 1th cooling | GYI | |||
HEAT | 2th heating | GWI W2 | |||
AUTO | 1th heating | GWI | |||
2C(heat pump) | OFF | 2th cooling | G YI Y2(O/B) | ||
COOL | 1th cooling | GYl(O/B) | |||
4 | IH(heat pump) | OFF | 2th heating | G YI AUX (0/8) | |
AUX optional | HEAT | 1th heating | GYI (O/B) | ||
AUX | AUX | GAUX | |||
5 | 2H(heat pump) | OFF | 3th heating | GYI Y2AUX(O/B) | |
AUX optional | HEAT | 2th heating | G YI Y2 (O/B) | ||
AUX | 1th heating | GYI (0/8) | |||
AUX | GAUX |
6 | IH/IC(heatpump) | OFF | 1th cooling | GYI (O/B) | I |
AUX optional | COOL | 2th heating | G YI AUX(O/B) | ||
HEAT | 1th heating | GYl(O/8) | |||
AUX | AUX | GAUX | |||
AUTO | |||||
7 | I H/2C(heat pump) | OFF | 2th cooling | GYI Y2(O/B) | |
AUX optional | COOL | 1th cooling | GYI (O/B) | ||
HEAT | 3th healing | G YI Y2 AUX (O/B) | |||
AUX | 2th heating | G YI Y2 (0/8) | |||
AUTO | 1th heating | GYI (0/8) | |||
AUX | GAUX |
Declaration of Conformity
WEEE Directive Compliance
Z-Wave Compliance
REQUIRED: 24 VAC POWER (“C” WIRE)
Transformer illustrate
Terminal | Conventional | Heat pump | |
1 | C | C |
24V AC power supply |
2 | Rh | Rh | |
3 | Re | Re | |
4 | WI | 0/B | Heating or changeover |
5 | W2 | AUX | 2ndstageheatingorauxiliaryheating |
6 | G | G | Fao |
7 | YI | YI | Compressorstage1 |
8 | Y2 | Y2 | Compressorstage2 |
Working State Indicator
Heat/Cool mode Setpoint Setting
Auto Mode Setpoint Setting
Under Auto mode and in the home page, short press the “V” or “
Secondary Menu Setting
In home page, short press
Mode Setting
Fan Mode Setting
Z-Wave Configuration
Under home page interface, press”
Secret Menu(Can be configured via Z-Wave parameters, please refer to the Z-Wave Parameters Setting table)
Under home page interface, long press for 5 sec, the device will enter into SECRET MENU. Press “
Menu Number | Item | Range | Default | Description |
0 | RESET FACTORY | ON/OFF | OFF | Restore factory setting |
EM HEAT MODE | ON/OFF | OFF | OFF—Tum olTEM HEAT MODE ON—Tum on EM HEAT MODE | |
LOCK KEY | ON/OFF | OFF | OFF—Unlock button ON—” I\” and” V” button will be locked. It is invalid in Secret Menu interface. | |
BEEP | ON/OFF | ON | OFF—Turn off the Beep sound. ON— Turn on the Beep sound. | |
4 | CHANGEOVER | ON/OFF | ON | OFF—Tum off CHANGE OVER ON—Tum on CHANGE OVER |
OB LOGIC | 0-1 | 0 | 0: OFF—OB normal logic I: ON—OB opposite logic | |
6 | TEMP SCALE | C/F | F | C: Celsius F: Fahrenheit |
CONTROL TYPE | 0-7 | ,·c | 0-7 control type wrote as above | |
TEMP DIFF | 0-3 C | Temperature difference value(Temperature unit will follow the device’s unit setting) | ||
0-5 “F | 21′ | |||
9 | TEMP CALI BRA | -J0C-J0″C | oc | Temperature calibration value(Temperature unit will follow the device’s unit setting) |
-181′-181′ | 01′ | |||
JO | SET UPPER | 1-99( | 37C | Set temperature upper value,upper>lower(Temperature unit will follow the device’s unit setting) |
1-991′ | 981′ | |||
11 | SET LOWER | 0-99( | SC | Set temperature lower value,upper>lower(Temperature unit will follow the device’s unit setting) |
0-991′ | 411′ | |||
12 | PROTECT DELAY | 0-\0min | I min | Compressor output delay time 0: OFF 1-10: Delay time in minute |
13 | SCREEN OFF | 0~60min | I min | Automatically turn off screen time 0: OFF 1-60: Automatically turn off the screen after certain time by minute. |
Z-Wave Function
AG Identifier | Max Node ID | Command Class | Trigger Situation |
0x0I |
COMMAND CLASS SENSOR MULTILEVEL V5, SENSOR_MOLTJLEVEL_REPORT_V5 – |
| |
COMMAND CLASS THERMOSTAT MODE V2, THERMOSTAT_MODE_REPORT – – | Device mode changes | ||
COMMAND CLASS THERMOSTAT OPERATING STATE, THERMOSTAT_OPERATING_STATE-:_REPORT | Device status changes | ||
COMMAND CLASS THERMOSTAT SETPOINT V2, THERMOSTAT_SETPOINT_REPORT-:_v2 – | Set point value changes | ||
COMMAND CLASS THERMOSTAT FAN MODE, THERMOSTAT_FAN-:_MODE_REPORT – | Fan mode changes | ||
COMMAND CLASS THERMOSTAT FAN STATE, THERMOSTAT_FAN-:_STATE_REPORT – | Fan status changes | ||
COMMAND CLASS DEVICE RESET LOCALLY, OEVICE_RESET_LOCALLY_NOTIFICATION | Restore factory setting |
Number | Function | Size | Description | Default | Possible Values |
Automatic Temp Scale Reporting | 0: Celsius I: Fahrenheit | 0-1 | |||
Temperature Difference Reporting(Celsius) | Unit: 0.1 C 0:Disabled 3-1000:n*O. I ·c A temperature value greater than this will be automatically reported to the gateway. | 0, 3-1000 | |||
Temperature Difference Reporting(Fahrenheit) | Unit:0.1F 0: Disabled 3-1000:n*0. l FA temperature value greater than this will be automatically reported to the gateway. | JO | 0, 3-1000 |
Timed Report Intervals (Temp.) | 0: Disabled 30-30000: Temperature value will be automatically reported to the gateway in a defined time interval by second. | 60 | 0, 30-30000 | ||
6 | Humidity Difference Reporting | 0: Disabled 1-99: A humidity difference value greater than this will be actively uploaded to the gateway. | 0-99 | ||
Timed Report Intervals (Humidity) | 0: Disabled 30-30000: Humidity value will be automatically reported to the gateway in defined time interval by second. | 90 | 0, 30-30000 | ||
II | EM HEAT MODE | 0: OFF 1:0N | 0-1 | ||
12 | LOCK KEY | 0: OFF 1 :ON(“ | 0-1 | ||
13 | BEEP | 0: OFF l:ON | 0-1 | ||
14 | CHANGEOVER | 0: OFF l:ON | 0-1 | ||
15 | OB LOGIC | 0: OFF(OB logic is normal) I: ON(OB logic is opposite) | 0-1 | ||
17 | CONTROL TYPE | 0-7 control type wrote as above. | 0-7 | ||
18 | TEMP DIFF | Temperature difference value(Temperature unit will follow the device’s unit setting) | !(Celsius) | 0-3(Celsius) | |
2(Fahrenheit) | 0-5(Fahrenheit) | ||||
19 | TEMP CALIBRA | Temperature calibration value(Temperature unit will follow the device’s unit setting) | (-10–+I0)Celsius | ||
(-18–+ I S)Fahrenheit) | |||||
20 | SET UPPER | Set temperature upper value,upper>lower(Temperature unit will follow the device’s unit setting) | 37(Celsius) | 1-99 | |
98(Fahrenheit) | |||||
21 | SET LOWER | Set temperature lower value,upper>lower(Temperature unit will follow the device’s unit setting) | 5(Celsius) | 0-98 | |
41(Fahrenheit) | |||||
22 | PROTECT DELAY | Compressor output delay time 0: OFF 1-10: Delay time in minute | 0-10 | ||
23 | SCREEN OFF | Automatically tum off-screen time 0: OFF 1-60: Automatically tum off the screen after certain time by minute | 0-60 | ||
255 | RESET FACTORY | Write 85: Restore the factory setting (write only) | 85 |
1-Year Limited Warranty
We warrant this device to be free from defects in material and workmanship under normal aod proper use for one year from purchase date of tho original purchaser. We will, at its option, either repair or replace aoy part of its products that prove defective by reason of improper workmanship or materials. TIIIS LlMITED WARRANTY DOES NOT COVER ANY DAMAGE TO THIS PRODUCT THAT RESULTS FROM IMPROPER INSTALLATION, ACCIDENT, ABUSE, MISUSE, NATURAL DISASTER, INSUFFICIENT OR EXCESSIVE ELECTRICAL SUPPLY, ABNORMAL MECHANICAL OR ENVIRONMENTAL CONDITIONS, OR ANY UNAUTHORIZED DISASSEMBLY, REPAIR OR MODIFICATION.
This limited warranty shall not apply if
Download Manual:
Mco-home MH-3928 SMART Thermostat User MANUAL
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