MWD-VC manual

Underfloor Heating Schedule and User Settings.

The thermostat will switch on your heating system at predetermined times each day of the week. You can set individual temperatures for up to six separate periods, called events, for each day of the week. Lowering the temperature when your home is unoccupied will reduce your energy costs without reducing comfort.

The thermostat comes with a preset heating schedule suitable for most homes. Unless you change the settings, the thermostat will operate according to this preset heating schedule.

The thermostat features an adaptive function that automatically changes heating start times to ensure the required temperature has been reached at the beginning of any specific event. After a few days, the adaptive function will have learned how much earlier the heating must be switched on.

The resistive touchscreen only requires a soft tap with your fingertip to register the touch. In this manual, the touch areas on the screen will be referred to as buttons.

The thermostat offers remote control of your underfloor heating through the OJ Microline® MWD5 app, which can be downloaded from both Google Play and App Store. With Google Home devices or Amazon Alexa devices, you can integrate with the thermostat. Once connected, simply ask the Google Assistant or Alexa to turn the heating up in a given room and let smart technology do the rest.

When the system has been installed and turned on for the first time, or after you have performed a factory reset, you must set Region, Language, Date, Time, and Floor Type. The thermostat will automatically guide you through the process.

1. Region – Set the time region in which the thermostat is located. This parameter ensures the correct use of Daylight Saving Time. Tap the time region you are in and confirm with “√”.
2. Language – Set the language to be used on the thermostat display. Tap the language you prefer and confirm with “√”.
3. Date – Set the current date. Tap the parameter you want to change and use the “Up Arrow” or “Down Arrow” button to set the day, month, and year. Confirm each setting with “√”.
4. Time – Set the current time. Tap the parameter you want to change and use the “Up Arrow” or “Down Arrow” button to set the hours and minutes. Confirm each setting with “√”.

5. Floor Type – Choose between: Tile (floors made of tile or stone) and Soft Floor (wooden or other engineered floors). Confirm your choice with “√” or discard it with “X”.

The thermostat is now ready for use and will control the underfloor heating according to the preset heating schedule. If you want to change the heating schedule, instructions are given in the section titled Heating Schedule. Details of the preset heating schedule are given in the section titled Factory Settings.

General Operation

The thermostat has an ON/OFF switch on the left side. It is operated via the high-resolution color touchscreen, used to navigate through the menus and change settings.

Whenever you change a parameter setting, you must tap the “Accept” button for the thermostat to acknowledge the change. “Accept” is shown on the screen as “√”. “Back” is shown as a button marked with an arrow pointing to the left, referred to as the “Left Arrow” button. “Cancel” is shown as a button marked “X”. “Cancel” has the same effect as “Back” but also discards all unsaved settings.

To return to the home screen, tap Back/Cancel once or multiple times depending on where you are in the menu structure.

• Scheduled Operation
• Manual Override
• Comfort Mode
• Boost Mode
• Frost Protection
• Holiday Mode
• Eco Function
• Menu
• Heating Schedule
• Energy Use
• User Settings
• Child Lock
• Display Brightness
• Screen Saver
• Energy Tariff
• Date
• Engineer Settings
• Adaptive Function
• Open Window
• Sensor Application
• Sensor Type
• Factory Reset
• EN50559
• Error Message
• Accept
• Cancel
• Server Connection
• No Server Connection
• WiFi Connection
• No WiFi Connection
• Floor Sensor Calibration
• Room Sensor Calibration
• Temperature Scale
• Next Change in Event/Function at the Given Time
• AM/PM Time Indication

The thermostat allows you to control temperature automatically according to a weekly schedule of your choice. The thermostat comes with a pre-programmed schedule for easy and economic heating control of most homes. The schedule can be changed in the Heating Schedule menu.

The thermostat offers seven different modes of temperature control:

• Scheduled Operation
• Manual
• Boost
• Frost Protection
• Holiday
• Eco

Scheduled Operation

The system will operate in Scheduled Operation unless you choose to override the scheduled events. During Scheduled Operation, the temperature is controlled automatically according to the programmed heating schedule.

Manual

Manual allows you to override Scheduled Operation and maintain a specified temperature around the clock. Use the “Up Arrow” or “Down Arrow” button to select the required temperature. While in Manual Override, an “X” button is shown in the lower left corner of the home screen to return to Scheduled Operation.

Comfort 1/2

Comfort mode can be used to override an event during Scheduled Operation. Set a comfort temperature which the thermostat will maintain for a chosen period (1-23 hours).

Boost

In Boost mode, the underfloor heating is constantly activated for one hour, after which the thermostat returns to Scheduled Operation.

Frost Protection, Holiday, and Eco Functions

These modes offer additional flexibility and control over your heating system, allowing for specific settings during holidays, cold periods, or to save energy.

Thermostat Setup – Main Menu

From the main menu, you can access all settings and configurations, including Heating Schedule, Energy Use, User Settings, and Engineer Settings.

Heating Schedule 1/3, 2/3, 3/3

You can program up to six separate heating events for each day of the week. This ensures optimal comfort and energy efficiency.

Energy Use

Monitor and manage your energy consumption through the thermostat’s interface.

User Settings

Customize settings such as Child Lock, Display Brightness, Screen Saver, and Energy Tariff.

Engineer Settings

Advanced configurations for professional installers and technicians.

WiFi and App Control

Connect the thermostat to your home WiFi network and control it remotely using the OJ Microline® MWD5 app. Integrate with smart home systems like Google Home and Amazon Alexa for voice control.

Troubleshooting

Detailed troubleshooting steps are provided for common issues to ensure smooth operation.

Frost Protection mode keeps the temperature above freezing when heating isn’t needed. To activate:

1. Tap the “Other” button on the home screen.
2. Select “Frost Protection”.
3. Confirm on the brief display screen.

While active, an ice crystal and glove icon will show with a target temperature of 5.0°C.

Frost Protection Home Screen:

1. Indication of Frost Protection Mode
2. Access Menus: Tap here to navigate.
3. Current Mode Icon: Ice crystal and glove indicate Frost Protection.
4. Target Temperature: Fixed at 5.0°C (red indicates heating is active).
5. Return to Scheduled Operation: Tap here to exit Frost Protection.

Holiday Mode sets your heating to a minimum while you’re away, saving energy. Follow these steps:

1. From the Scheduled Operation home screen, tap “Other”.
2. Select “Holiday”.
3. Turn the “OFF/ON” switch to “ON” and confirm.
4. Set your departure and return dates.
5. Confirm on the display screen.

During Holiday Mode, a suitcase icon and your dates will be shown. To cancel, tap the “X” button.

Holiday Home Screen:

1. Indication of Holiday Mode
2. Access Menus: Tap here to navigate.
3. Current Mode Icon: Suitcase indicates Holiday Mode.
4. Holiday Dates: Shows departure and return dates.
5. Exit Holiday Mode: Tap here to return to Scheduled Operation.
6. Upcoming Holiday: Shows suitcase if dates are set but not yet active.

Eco Function reduces energy use when you leave the room or house. To enable:

1. Tap the “Eco” button on the Scheduled Operation home screen.

Eco Function Home Screen:

1. Indication of Eco Function
2. Access Menus: Tap here to navigate.
3. Current Mode Icon: Leaf indicates Eco Function.
4. Current Target Temperature: Shows the lowest setback temperature (red if heating is active).
5. Return to Scheduled Operation: Tap here to exit Eco Mode.

Access the main menu by tapping the “Menu” button on the home screen. Options include:

• Heating Schedule
• Energy Use
• Engineer Settings
• App Control

Heating Schedule

Control your temperature with a programmed schedule. To adjust:

1. Tap the “Menu” button.
2. Select “Heating Schedule”.
3. Choose “Week Type”:
   • Work days/home days: Fixed schedule.
   • All days are different: Customize each day.

For Work days/home days:

1. Choose work days and confirm.
2. Designate home days automatically.

For All days are different:

1. Program each day individually.

Setting Events:

1. Access “Event Schedule”.
2. Adjust temperatures and times for each event.
3. Confirm settings.

Events per Day:

1. Choose between four or six events per day.

Energy Use

Check your energy usage data:

1. Tap the “Menu” button.
2. Select “Energy Use”.

Options:

• Last 7 days: Daily usage graph.
• Last month: Usage every three days.
• Last year: Monthly usage.
• Consumption Overview: kWh and costs.

User Settings

Adjust various parameters:

• Child Lock
• Display Brightness
• Screen Saver
• Energy Tariff
• Eco Function
• Date
• Date Format
• Time
• Time Format
• Daylight Saving Time
• Unit
• Language
• Information
• Support

Child Lock

Prevent unauthorized changes:

1. Tap “Menu”.
2. Select “User Settings”.
3. Adjust “Child Lock” settings.

Unlock the screen by drawing an “L” if the lock is active.

Display Brightness

Adjust display brightness:

1. Tap “Menu”.
2. Select “User Settings”.
3. Choose “Display Brightness” and adjust.

Screen Saver

Choose what to display when idle:

1. Tap “Menu”.
2. Select “User Settings”.
3. Choose “Screen Saver” options:
   • Date, Time
   • Date, Time, Temperature
   • Screen Off

Energy Tariff

Enter data for energy calculations:

1. Tap “Menu”.
2. Select “User Settings”.
3. Adjust “Energy Tariff” settings:
   • Currency
   • Price per kWh
   • Load (Manual setting if Auto Detection is OFF)

Date & Time Settings

Date:

1. Tap “Menu”.
2. Select “User Settings”.
3. Adjust the date.

Date Format:

1. Tap “Menu”.
2. Select “User Settings”.
3. Choose your date format.

Time:

1. Tap “Menu”.
2. Select “User Settings”.
3. Adjust the time.

Time Format:

1. Tap “Menu”.
2. Select “User Settings”.
3. Choose your time format.

Daylight Saving Time:

1. Tap “Menu”.
2. Select “User Settings”.
3. Set “Daylight Saving Time” to ON or OFF.

Unit

Choose between Celsius and Fahrenheit:

1. Tap “Menu”.
2. Select “User Settings”.
3. Adjust the unit.

Language

1. Tap the “Menu” button on the home screen.
2. Tap “User Settings.”
3. Scroll down and tap “Language.”
4. Select your preferred language.
5. Confirm with “√” or discard with “X.”
6. Tap the “Left Arrow” button to return to “User Settings.”

Information 1/2

1. Tap the “Menu” button on the home screen.
2. Tap “User Settings.”
3. Scroll down and tap “Information.”
4. Return to “User Settings” with the “Left Arrow” button or scan the QR Code by tapping “QR.”

QR Code Scan Data:

• Contact
• Serial Number
• Software Version
• Sensor Type
• Application
• Mode
• Adaptive Function
• Open Window
• Child Lock
• Time Format
• Temperature Unit
• Heating Schedule
• Energy Use

5. Tap the QR Code to return to the Information screen.
6. Tap the “Left Arrow” button to return to “User Settings.”

QR Code is a registered trademark of DENSO WAVE INCORPORATED.

Support

1. Tap the “Menu” button on the home screen.
2. Tap “User Settings.”
3. Scroll down and tap “Support.”
4. Return to “User Settings” with the “Left Arrow” button.

Engineer Settings

Adaptive Function

1. Tap the “Menu” button on the home screen.
2. Scroll down and tap “Engineer Settings.”
3. Tap “Adaptive Function.”
4. Select “OFF” or “ON” and confirm with “√.”
5. The thermostat will return to “Engineer Settings.”

Open Window

1. Tap the “Menu” button on the home screen.
2. Scroll down and tap “Engineer Settings.”
3. Tap “Open Window.”
4. Select “OFF” or “ON” and confirm with “√.”
5. The thermostat will return to “Engineer Settings.”
6. If an open window is detected, tap “X” to cancel the function.

Sensor Application

1. Tap the “Menu” button on the home screen.
2. Tap “Engineer Settings.”
3. Tap “Sensor Application.”
4. Choose your preferred sensor type and confirm with “√” or discard with “X.”
5. The thermostat will return to “Engineer Settings.”

Sensor Type

1. Tap the “Menu” button on the home screen.
2. Tap “Engineer Settings.”
3. Scroll down and tap “Sensor Type.”
4. Select the type of sensor used and confirm with “√” or discard with “X.”
5. If “Custom” is chosen, enter resistance values for specific temperatures.

Floor Sensor Calibration

1. Tap the “Menu” button on the home screen.
2. Tap “Engineer Settings.”
3. Scroll down and tap “Floor Sensor Calibration.”
4. Confirm with “√” or cancel with “X.”
5. Adjust the thermostat to match the actual floor temperature and confirm.

Room Sensor Calibration

1. Tap the “Menu” button on the home screen.
2. Tap “Engineer Settings.”
3. Scroll down and tap “Room Sensor Calibration.”
4. Confirm with “√” or cancel with “X.”
5. Adjust the thermostat to match the actual room temperature and confirm.

Temperature Scale

1. Tap the “Menu” button on the home screen.
2. Tap “Engineer Settings.”
3. Scroll down and tap “Temp. Scale.”
4. Confirm with “√” or cancel with “X.”
5. Set the Minimum and Maximum Temperature Scales and Limits as needed.

Factory Reset

1. Tap the “Menu” button on the home screen.
2. Tap “Engineer Settings.”
3. Tap “Factory Reset.”
4. Choose “Reset” to restore factory settings or “X” to maintain current settings.

EN50559

1. Tap the “Menu” button on the home screen.
2. Tap “Engineer Settings.”
3. Scroll down and tap “EN50559.”
4. Set the number of minutes for heating to avoid hotspots and confirm with “√.”

WiFi Connection

1. Tap the “Menu” button on the home screen.
2. Tap “App Control.”
3. Tap “WiFi Connection.”
4. Choose “WPS” for automatic setup or “Manual” for manual setup.
5. Follow the instructions to connect to your wireless network.

Manual Setup

1. Tap “Other” if your network is not listed.
2. Enter the network name (SSID) and password.
3. Confirm with “√” and wait for the connection to complete.

WiFi Connection

If problems persist or if anything unexpected happens during the setup of the WiFi connection, please consult the “Troubleshooting” section in this manual.

Disconnect a WiFi Connection

1. Tap the “Menu” button on the home screen.
2. Tap the “App Control” button to access the app setup options.
3. Tap the “WiFi Connection” button to display the “Status” screen.
4. Tap the “Right Arrow” button to proceed to the “Connection Type” screen.
5. Tap “Disconnect” to remove the current WiFi connection.
6. Confirm with “√”. You will return to the App Control menu.
7. A confirmation screen will be displayed briefly.

Note: If you tap the “X” button, you will return to the “Connection Type” menu.

Connect to App

Install the OJ Microline® MWD5 app on your smart device.

1. After setting up a WiFi connection on your thermostat, you can connect it to the OJ Microline® MWD5 app as follows:
2. Tap the “Menu” button on the home screen.
3. Tap the “App Control” button to access the app setup options.
4. Tap the “Connect to App” button to start the connection process.
5. Choose how to connect to your app:
   • Tap “QR Code” to display a QR code for scanning with your mobile phone.
   • Tap “Thermostat ID” to display the thermostat ID for manual entry in your app.
6. Confirm with “√”.

Remove from App

1. Tap the “Menu” button on the home screen.
2. Tap the “App Control” button to access the app setup options.
3. Tap the “Remove from App” button to remove the thermostat from the app.
4. Confirm with “√”.
5. A confirmation screen will be displayed briefly.
6. The thermostat will automatically return to the “App Control” menu.

Note: The thermostat cannot be removed from the app until the connection is interrupted using this menu.

Smarthome Connectivity – Alexa 1/2

1. Ensure you have an Amazon account connected to the Amazon Alexa app.
2. Open the Amazon Alexa app on your smartphone/tablet.
3. Press “Devices” from the menu tab at the bottom of the screen.
4. Scroll down and press “YOUR SMART HOME SKILLS.”
5. Press “ENABLE SMART HOME SKILLS.”
6. Search for “Microline” and select “MWD5 Microline.”
7. Press “Enable to use.” You will be forwarded to the login page of your thermostat.
8. Enter your MWD5 application login information. Alexa will ask for permission. Press “Yes – allow.”
9. Once Alexa links to the MWD5 application, press “Close.”
10. Press “Discover Devices.” Alexa will search for thermostats on your account.
11. After the search, press “SET UP DEVICE,” choose a group for the thermostat, then press “ADD TO GROUP” and “CONTINUE.”
12. Press “DONE.”

Your thermostat is now connected to your Amazon Alexa home system. See part 2/2 for voice commands.

Smarthome Connectivity – Alexa 2/2

Disconnecting from Alexa:

1. Open the Amazon Alexa app on your smartphone/tablet.
2. Press “Devices.”
3. Press the group containing the thermostat you want to disconnect.
4. Choose the thermostat you wish to disconnect.
5. Press the settings symbol (upper right corner).
6. Press the delete symbol (upper right corner) and confirm the disconnection.

Your thermostat is now disconnected from your Amazon Alexa device.

Voice Commands:

• Set exact temperature: “Alexa, set the Living room to 20 degrees.”
• Read out a temperature: “Alexa, what is the temperature in the Office?”
• Increase/decrease the temperature: “Alexa, increase/decrease the temperature in the Bedroom by 4 degrees” or “Alexa, increase/decrease the temperature on all thermostats.”

Smarthome Connectivity – Google 1/2

1. Ensure you have a Google account connected to the Google Home app.
2. Open the Google Home app on your smartphone/tablet.
3. Tap “Add” at the top left, then “Set up device” and “Works with Google.”
4. Search for “Microline” and select “OJ Microline.”
5. Follow the in-app steps:
   • Sign in with your login information.
   • Accept the grants page.
   • Your thermostat should appear for linking to Google Home.
   • Choose the thermostat and click “Next.”
   • Select a name/location for your thermostat and click “Next.”

Your thermostat is now set up with Google Home.

Smarthome Connectivity – Google 2/2

Disconnecting from Google Home:

1. Open the Google Home app on your smartphone/tablet.
2. Tap the name/location of the thermostat you want to disconnect.
3. Press the settings symbol (upper right corner).
4. Tap “Unlink OJ Microline.”
5. Confirm by pressing “Unlink.”

Your thermostat is now disconnected from your Google Home System.

Voice Commands:

• Set exact temperature: “Hey Google, set the Living room to 20 degrees” or “Hey Google, set all thermostats to 20 degrees.”
• Read out a temperature: “Hey Google, what is the temperature in the Office?” or “Hey Google, what is the temperature on all thermostats?”
• Increase/decrease the temperature: “Hey Google, increase/decrease the temperature in the Bedroom by 4 degrees” or “Hey Google, make the Bedroom warmer.”

Startup Wizard 1/2

When powered up for the first time or after a “Factory Reset,” the “Startup Wizard” will appear. Follow these steps to enter the basic data:

1. Region: Set the time region for Daylight Saving Time. Tap the appropriate time region and confirm with “√.”
2. Language: Set the language for the display. Use the “Up Arrow” or “Down Arrow” buttons to scroll and select your preferred language. Confirm with “√.”
3. Date: Set the current date. Tap the parameter to change the day, month, and year. Confirm each setting with “√.”

Startup Wizard 2/2

4. Time: Set the current time. Tap the parameter to change the hours and minutes. Confirm each setting with “√.”
5. Floor Type: Choose between:
   • Tile: For floors made of tile or stone.
   • Soft Floor: For wooden or engineered floors. Confirm with “√.”

Factory Settings

Preset Temperatures:

• Scheduled Operation: See Preset Schedule*
• Manual Override: 23°C*
• Comfort Mode: 23°C*
• Boost Mode: Max °C ≤ Maximum Limit
• Holiday Mode: 5°C
• Frost Protection: 5°C

*You can change these settings as needed. See Operating Modes in this manual.

Preset Schedule:

Work Days:

• Wake up: 6:00 – Floor: 25°C, Room/Floor Limit: 20°C
• Leave home: 8:00 – Floor: 20°C, Room/Floor Limit: 15°C
• Daytime home*: 12:00 – Floor: 25°C, Room/Floor Limit: 20°C
• Daytime leave*: 13:00 – Floor: 20°C, Room/Floor Limit: 15°C
• Come home: 17:00 – Floor: 25°C, Room/Floor Limit: 20°C
• Go to sleep: 23:00 – Floor: 20°C, Room/Floor Limit: 15°C

Home Days:

• Wake up: 8:00 – Floor: 25°C, Room/Floor Limit: 20°C
• Go to sleep: 23:00 – Floor: 20°C, Room/Floor Limit: 15°C

*Only available with a 6-event schedule.

Troubleshooting 1/7

Error Messages and Warnings:

• E0: Internal failure. Contact your heating engineer for replacement.
• E1: Internal sensor defective. Contact your heating engineer for replacement.
• E2: External floor sensor issues. Contact your heating engineer for reconnection or replacement.
• E5: Internal overheating. Contact your heating engineer for inspection.

Note: If three circles with dots appear, the thermostat is in “Child Lock” mode. Refer to the “Child Lock” section for unlocking instructions.

Troubleshooting 2/7

Function Availability in Modes:

Not all functions are available in all modes. Here’s a summary:

Troubleshooting 3/7

I CAN’T CONNECT TO MY WIRELESS NETWORK

Troubleshooting 4/7

I CAN’T CONNECT TO MY WIRELESS NETWORK

Troubleshooting 5/7

I CAN’T CONNECT TO MY WIRELESS NETWORK

Troubleshooting 6/7

I CAN’T CONNECT TO MY WIRELESS NETWORK

Troubleshooting 7/7

I CAN’T GET GOOGLE ASSISTANT/ALEXA TO WORK