Smart Thermostat neoStat-e V3

IMI Heatmiser Smart Thermostat neoStat-e V3

The IMI Heatmiser neoStat-e V3 is a smart programmable thermostat designed to control electric underfloor heating systems. It combines temperature regulation, programmable heating schedules, floor temperature monitoring, and wireless connectivity through the Heatmiser neoHub.

The thermostat operates using a 230V AC power supply and supports electric heating mats or cables with a maximum connected load of 16 amps. It can measure temperature through its built-in air sensor, the supplied floor temperature probe, or a compatible remote air sensor.

The neoStat-e V3 provides two operating modes:

• Mode 1 – Thermostat: Controls heating according to the selected temperature and programmed comfort levels.
• Mode 2 – Time Clock: Controls a timed electrical output using programmed ON and OFF switching periods.

The thermostat features an LCD display, five touch-sensitive navigation buttons, an approach sensor, frost protection, temperature hold, holiday programming, keypad locking, and advanced heating settings. When paired with a compatible Heatmiser neoHub, the neoStat-e V3 communicates through the neo mesh network and can be managed using the Heatmiser neoApp.

Important: When controlling electric underfloor heating, the thermostat must use a floor temperature sensor, either independently or together with an air sensor. The air-only sensor setting must not be used for electric underfloor heating.

Product Overview and Technical Specifications

The neoStat-e V3 belongs to the IMI Heatmiser neo Series and provides programmable heating control with floor temperature protection.

How the Programmable Thermostat Works

The neoStat-e V3 combines a heating programmer with a thermostat.

The thermostat monitors the temperature through the selected sensor and activates heating when the measured temperature falls below the required setting.

When the selected temperature is reached, the thermostat stops requesting heating.

The programming function allows different target temperatures to be maintained at different times of the day.

Understanding Temperature Settings

Increasing the thermostat’s target temperature does not make the heating system warm the room faster. Heating speed depends on the system’s design and capacity.

A higher target temperature causes the heating system to continue operating until the higher temperature is reached.

Similarly, lowering the target temperature does not cause a room to cool faster. It changes the temperature the thermostat is instructed to maintain.

Selecting a Comfortable Temperature

A suitable way to establish a comfortable room temperature is to begin with a lower setting, such as 18°C, and increase it gradually by 1°C each day until the required comfort level is reached.

Once a comfortable temperature has been established, the thermostat can maintain it according to the programmed schedule.

Avoiding unnecessarily high target temperatures can reduce heating energy consumption.

Thermostat Placement and Airflow

The thermostat requires unrestricted airflow when measuring room temperature.

It should not be covered by curtains or blocked by furniture.

Nearby electrical heaters, televisions, and lamps can affect room temperature measurements and heating operation.

Parts, Components, and Control Buttons

The neoStat-e V3 has an LCD display and five touch-sensitive buttons along the lower front section.

The thermostat also includes an approach sensor, removable front panel, back plate, and electrical connection terminals.

Main Components

Touch Control Buttons

Some functions require the Tick button to be held for several seconds or combined with another button.

Understanding the LCD Display

The LCD displays the current temperature, heating demand, operating mode, selected menu, and programmed settings.

LCD Indicators and Symbols

Heating Demand Indicator

The flame symbol appears when the thermostat is requesting heating.

When the flame symbol is absent, heating is not currently required to maintain the selected temperature.

The flame symbol flashes when Optimum Start is active.

Floor Temperature Limit Indicator

The floor limit symbol appears when the connected floor sensor reaches the configured floor temperature limit.

Mesh Connection Indicator

The mesh symbol appears when the neoStat-e V3 is communicating with a Heatmiser neoHub.

If the symbol disappears, the thermostat has lost its connection with the hub.

Approach Sensor

The neoStat-e V3 uses an approach sensor to detect when someone moves toward the thermostat.

As a person approaches, the touch-sensitive controls and LCD backlight illuminate.

This allows the display and controls to be viewed more easily when adjusting heating settings in a dark room.

Safety Instructions and Installation Requirements

The neoStat-e V3 operates from a 230V AC mains supply and controls an electrical heating load.

The thermostat must only be installed by a qualified electrician, and installation must comply with local electrical regulations.

Important Installation Precautions

• Mount the thermostat at eye level.
• Do not install it close to a direct heat source.
• Do not apply excessive pressure to the LCD screen because permanent damage may occur.
• Use a recessed wall back box with a minimum depth of 35 mm.
• Follow the manufacturer’s wiring diagram.
• Use the correct temperature sensor configuration for the heating application.
• Do not exceed the maximum connected heating load of 16 amps.

Electric Underfloor Heating Sensor Requirement

The manufacturer’s instructions specifically prohibit using the built-in air sensor alone to control electric underfloor heating.

For electric underfloor heating, select either:

• Floor Sensor Only, or
• A combined air and floor sensor configuration.

When both air and floor sensors are enabled, the floor sensor acts as a temperature-limiting sensor.

Installing the neoStat-e V3 Thermostat

The neoStat-e V3 is designed for flush mounting into a recessed wall back box.

A minimum back box depth of 35 mm is required.

Step 1: Remove the Front Panel

1. Locate the retaining screw on the bottom edge of the thermostat.
2. Use a small screwdriver to loosen the screw slightly.
3. Carefully separate the thermostat front panel from the back plate.
4. Place the front panel somewhere safe.

Step 2: Connect the Electrical Wiring

The electrical connections must follow the manufacturer’s wiring diagram.

The manual includes separate diagrams for Thermostat Mode and Time Clock Mode.

The Thermostat Mode diagram shows connections for the electric heating mat or cable, mains supply, floor sensor, and optional remote air sensor.

Step 3: Mount the Back Plate

1. Position the thermostat back plate against the recessed wall back box.
2. Align the mounting holes.
3. Screw the back plate securely into the box.

Step 4: Reattach the Front Panel

1. Position the front panel against the mounted back plate.
2. Carefully clip the front section into place.
3. Tighten the retaining screw.

Selecting the Operating Mode

The neoStat-e V3 can operate as a thermostat or a time clock.

Thermostat Mode is the factory default.

Mode 1: Thermostat

Mode 1 controls heating according to the measured temperature and configured target temperature.

It supports programmable heating schedules, temperature adjustments, Temperature Hold, Frost Protection, and Holiday Mode.

Mode 2: Time Clock

Mode 2 controls a timed output using programmed ON and OFF switching periods.

It operates as a timer instead of using temperature-based control.

How to Change the Operating Mode

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick for 3 seconds.
3. SETUP becomes highlighted.
4. Press and hold Tick for 10 seconds.
5. Use Left and Right to select the required mode.
6. Select 1 for Thermostat Mode or 2 for Time Clock Mode.
7. Press Tick to confirm.

The thermostat returns to the main display for the selected operating mode.

Important: This procedure uses the factory reset sequence. Previously configured setup and pairing parameters are canceled and must be configured again as required.

Pairing the Heatmiser neoHub

The neoStat-e V3 communicates with a compatible Heatmiser neoHub through the neo mesh network.

The neoHub must first be connected to the router and registered in the Heatmiser neoApp.

Step 1: Connect the neoHub

1. Connect the neoHub to the router using the supplied Ethernet cable.
2. Connect the power supply to the neoHub.
3. Wait for the router to assign an IP address.

The neoHub Link LED turns red when connected to the local network.

Once the neoHub connects to the Heatmiser cloud server, the Link LED turns green.

Step 2: Install the Heatmiser neoApp

1. Connect the smartphone or tablet to the same Wi-Fi network as the router.
2. Download the Heatmiser neoApp from the Apple App Store or Google Play Store.
3. Register an account.
4. Sign in to the app.

Step 3: Add the neoHub to the Account

1. Select Add Location in the neoApp.
2. Press the Connect button on the neoHub when prompted.
3. Wait for the hub to connect.
4. Enter a name for the location, such as Home.

The neoHub is now associated with the account.

Pairing the neoStat-e V3 With the neoHub

Once the neoHub is connected, the thermostat can be added as a zone.

The manufacturer recommends pairing the neoStat-e located nearest to the neoHub first.

Step 1: Start Pairing in the neoApp

1. Open the neoApp.
2. Select ADD NEOSTAT.
3. Enter a preset or custom name for the thermostat.
4. Press NEXT.

The app provides two minutes for the neoStat-e V3 to join the neoHub.

Step 2: Activate Pairing on the Thermostat

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick.
3. SETUP becomes highlighted.
4. Press Tick once.
5. Feature 01 appears.
6. Press Tick again to begin pairing.

The mesh symbol begins flashing.

Step 3: Confirm the Connection

When the thermostat successfully connects to the neoHub, the mesh symbol remains continuously displayed.

In the neoApp:

• Select ADD ANOTHER to add another zone.
• Select FINISH to complete setup.

Adding More Thermostats

The neoHub only needs to be paired with the account once.

To add another neoStat, open ZONES in the neoApp, select EDIT, and then select ADD ZONE.

Understanding the Mesh Network

The neoStat-e V3 communicates through the Heatmiser mesh network.

Compatible neoStat thermostats can send and receive signals through other thermostats on the network.

Communication is relayed between participating thermostats until it reaches the intended destination.

This arrangement extends communication range and improves network stability compared with conventional RF thermostat systems.

Mesh Connection Status

The mesh symbol remains visible while the thermostat communicates with the neoHub.

If the mesh symbol disappears, communication with the hub has been lost.

Mode 1: Thermostat Operation

Mode 1 provides temperature-based heating control.

The neoStat-e V3 can maintain a selected temperature manually or follow programmed comfort levels throughout the day.

Available functions include:

• Temperature regulation.
• Programmable heating schedules.
• Manual temperature adjustments.
• Temperature Hold.
• Frost Protection.
• Holiday Mode.
• Floor temperature monitoring.
• Keypad locking.
• Optimum Start.
• Advanced temperature sensor settings.

Room and Floor Temperature Display

The neoStat-e V3 can use different temperature sensors according to the configured Sensor Selection setting.

Room Temperature

When an air sensor is active, ROOM TEMP identifies the displayed temperature.

Floor Temperature

When floor temperature is displayed, the screen shows FLOOR TEMP.

Combined Air and Floor Sensing

When both the air and floor sensors are enabled, the room temperature appears by default.

The floor sensor is used for temperature limiting.

How to View the Floor Temperature

1. Press and hold Left and Right together.
2. Continue holding for 5 seconds.
3. The current floor temperature appears.

The display identifies the reading as FLOOR TEMP.

Setting the Clock and Calendar

The neoStat-e V3 uses clock and calendar information for programmed heating and holiday operation.

How to Set the Clock

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick to switch off the display.
3. Use Right to select CLOCK.
4. Press Tick.
5. Use Up and Down to select the year.
6. Press Tick to confirm.
7. Select the month.
8. Press Tick.
9. Repeat the process for the date and time.
10. Press Tick to save the settings.
11. Use Down to highlight the Power symbol.
12. Press Tick to turn the display on.

Heating Programs and Comfort Levels

The neoStat-e V3 supports three programmable heating schedule arrangements.

A non-programmable thermostat setting is also available.

Available Programming Modes

When the thermostat is connected to the mesh network, the programming mode is configured through the neoApp.

Default Heating Schedule

The thermostat is supplied with four programmed comfort levels.

Each comfort period maintains its selected temperature until the next programmed period begins.

Weekday/Weekend Programming

This mode provides four comfort levels for Monday through Friday and four separate comfort levels for Saturday and Sunday.

7 Day Programming

Each day can have four independently configured comfort levels.

24 Hour Programming

The same four comfort levels repeat every day.

Programming the Heating Comfort Levels

The heating schedule can be changed using the thermostat’s EDIT function.

How to Program Comfort Levels

1. Use Left and Right to highlight EDIT.
2. Press Tick.
3. Use Left and Right to select the required day or day group.
4. Press Tick.
5. WAKE begins flashing.
6. Press Tick to edit the WAKE settings.
7. Use Up and Down to select the hour.
8. Press Tick.
9. Use Up and Down to select the minutes.
10. Press Tick.
11. Use Up and Down to select the required temperature.
12. Press Tick.
13. Press Right to move to LEAVE.
14. Press Tick to edit the LEAVE settings.
15. Repeat the procedure for RETURN and SLEEP.
16. Highlight DONE.
17. Press Tick to save the heating schedule.

Disabling an Unused Comfort Period

An unused comfort period can be skipped by setting its time to –:–.

The thermostat ignores the disabled period.

Adjusting the Set Temperature

The required temperature can be changed directly using the Up and Down buttons.

How to Change the Temperature

1. Press Up or Down.
2. SET appears with the target temperature.
3. Use Up and Down to select the required temperature.
4. Press Tick to confirm.

The thermostat returns to the main display.

Duration of a Manual Temperature Adjustment

When a programmed heating schedule is active, the manually selected temperature remains effective until the next programmed comfort period.

At that point, the thermostat returns to its scheduled temperature.

Temperature Hold Function

Temperature Hold temporarily overrides the normal heating schedule.

It allows a different temperature to be maintained for a selected duration.

How to Activate Temperature Hold

1. Use Left and Right to highlight HOLD.
2. Press Tick.
3. Use Up and Down to select the hold duration.
4. Press Tick.
5. Use Up and Down to select the required hold temperature.
6. Press Tick to confirm.

HOLD LEFT appears on the display with the remaining time.

When the countdown ends, the thermostat returns to its normal program.

How to Cancel Temperature Hold

1. Highlight HOLD.
2. Press Tick.
3. When CANCEL is highlighted, press Tick again.

The temporary hold ends.

Locking and Unlocking the Thermostat

The neoStat-e V3 includes a four-digit PIN keypad lock.

How to Lock the Keypad

1. Use Left and Right to highlight HOLD.
2. Press and hold Tick for 10 seconds.
3. The display shows 0000.
4. Use Up and Down to enter the first two digits of the PIN.
5. Press Tick.
6. Use Up and Down to enter the remaining two digits.
7. Press Tick to confirm.

The keypad lock symbol appears.

How to Unlock the Keypad

1. Press Tick once.
2. The display shows 00:00.
3. Use Up and Down to enter the first two digits of the previously configured PIN.
4. Press Tick.
5. Enter the remaining two digits.
6. Press Tick.

The keypad unlocks and returns to the main display.

Frost Protection Mode

Frost Protection maintains a reduced temperature when normal heating is not required.

How to Activate Frost Protection

1. Use Left and Right to highlight the Power symbol.
2. Press Tick once.

The frost protection symbol appears.

The thermostat requests heating only when the measured room temperature falls below the selected frost protection temperature.

If heating becomes active, the flame symbol appears.

How to Cancel Frost Protection

1. Highlight the Power symbol.
2. Press Tick again.

The frost protection symbol disappears.

Frost Protection Temperature Settings

The frost protection temperature can be changed through Feature 03 in the advanced settings.

Turning the Thermostat On and Off

How to Turn the Thermostat Off

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick for approximately 3 seconds.
3. Continue until the display becomes blank.

The display and heating output are switched off.

How to Turn the Thermostat On

Press Tick once.

The thermostat returns to its main operating display.

Heating Status

When the flame icon is displayed, the thermostat is requesting heating.

When the flame symbol is absent, heating is not currently required to maintain the selected temperature.

Holiday Mode

Holiday Mode temporarily changes the normal heating program for a selected period.

In Thermostat Mode, the target temperature is reduced to the configured frost protection temperature.

In Time Clock Mode, the timed output remains off.

How to Activate Holiday Mode

1. Use Left and Right to highlight HOLIDAY.
2. Press Tick.
3. Use Up and Down to select the holiday ending year.
4. Press Tick.
5. Select the month.
6. Press Tick.
7. Repeat the procedure for the ending date and time.
8. Press Tick to confirm.

The holiday period begins immediately.

At the selected ending date and time, the thermostat automatically returns to its normal program.

How to Cancel Holiday Mode

1. Highlight HOLIDAY.
2. Press Tick.
3. When CANCEL is highlighted, press Tick again.

Holiday Mode is canceled.

Advanced Thermostat Settings

The neoStat-e V3 includes optional settings for heating response, temperature limits, sensor selection, and programming.

Most settings can remain at their factory defaults.

How to Open Optional Settings

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick for 3 seconds.
3. SETUP becomes highlighted.
4. Press Tick once.
5. The feature number and setting value appear.
6. Use Up and Down to select the required feature.
7. Use Left and Right to change the setting.
8. Press Tick to confirm and exit.

Optional Settings Reference Table

Feature 01: neoHub Pairing

Feature 01 is used to connect the neoStat-e V3 to the Heatmiser neoHub.

The mesh symbol flashes during pairing and remains visible after the connection is established.

Feature 02: Switching Differential

Switching Differential determines how far the measured temperature must fall below the target temperature before heating begins.

For example, with a target temperature of 20°C:

• A 1°C differential activates heating at 19°C and stops it at 20°C.
• A 2°C differential activates heating at 18°C and stops it at 20°C.

The factory default is 1°C.

Feature 03: Frost Protection Temperature

This feature determines the temperature maintained during Frost Protection.

The adjustable range is 7–17°C.

The default is 12°C.

Feature 04: Output Delay

Output Delay helps prevent rapid switching of the heating output.

The adjustable range is 0–15 minutes.

The factory default is 0, meaning no additional delay is applied.

Feature 05: Temperature Adjustment Limit

This setting restricts temperature changes made using Up and Down.

The restriction also applies when the keypad is locked, allowing limited temperature control.

The adjustable range is 0–10°C.

Feature 06: Temperature Sensor Selection

The neoStat-e V3 supports five sensor configurations.

When both air and floor sensors are enabled, the floor sensor acts as a limiting sensor to help prevent excessive floor temperature.

Important: The air-only sensor setting must not be used to control electric underfloor heating. Floor sensing must be enabled.

Feature 07: Floor Temperature Limit

The floor temperature limit is available when Sensor Selection is configured as 03 or 04.

The adjustable range is 20–45°C.

The factory default is 28°C.

When the floor temperature reaches the selected limit, the floor limit symbol appears.

Feature 08: Optimum Start

Optimum Start calculates when heating should begin to reach the programmed temperature at the required time.

The thermostat uses its measured heating rate to estimate how long the heating system needs to warm the room.

The adjustable range is 0–5 hours.

The default is 0, meaning the function is disabled.

Feature 09: Rate of Change

Rate of Change represents the number of minutes the thermostat calculates are required to raise the temperature by 1°C.

For example, a value of 20 represents an estimated 20 minutes for a 1°C temperature increase.

This value is used by Optimum Start.

Feature 12: Programming Mode

Feature 13: Temperature Format

The temperature display can be configured to use Celsius or Fahrenheit.

Changing the Floor Temperature Sensor Probe Type

The neoStat-e V3 is supplied with a 10K floor temperature sensor probe.

It is also compatible with 12K and 15K probe values.

Compatible Probe Types

How to Change the Floor Probe Type

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick to turn off the display.
3. Press and hold Up and Down together for 5 seconds.
4. The probe selection screen appears.
5. Use Left and Right to select 10, 12, or 15.
6. Press Tick to confirm.

The thermostat returns to the main display using the selected probe configuration.

Important: The manufacturer specifies that this procedure should only be performed by an experienced technician who has accurately verified the installed floor probe value.

Recalibrating the Thermostat

The neoStat-e V3 includes a temperature recalibration procedure.

How to Recalibrate the Temperature

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick to switch off the display.
3. Press and hold Tick and Down together for 10 seconds.
4. The current temperature appears.
5. Use Up and Down to select the required calibration temperature.
6. Press Tick to confirm.
7. The display becomes blank.
8. Use Down to highlight the Power symbol.
9. Press Tick to turn the thermostat on.

Error Codes and Troubleshooting

The neoStat-e V3 displays error codes when temperature sensor faults are detected during Thermostat Mode.

Error Code Reference

Error E0: Internal Temperature Sensor Fault

E0 indicates that the thermostat’s internal temperature sensor has developed a fault.

Technical assistance should be obtained from the manufacturer or an appropriate service professional.

Error E1: Floor Temperature Sensor Fault

E1 indicates a problem with the remote floor temperature probe.

Possible conditions include:

• The floor probe is not connected.
• The probe is incorrectly wired.
• The probe is faulty.

The probe and its connections require assessment.

Error E2: Remote Air Temperature Sensor Fault

E2 indicates a problem with the remote air sensor.

Possible conditions include:

• The remote air probe is not connected.
• The probe is incorrectly wired.
• The probe is faulty.

The sensor connection and probe condition require checking.

Common Operating Problems and Checks

Checking an Unexpected Heating Schedule

When the heating does not follow the expected schedule:

1. Check that Thermostat Mode is selected.
2. Review the programmed comfort levels.
3. Check whether Temperature Hold is active.
4. Check whether Frost Protection or Holiday Mode is active.
5. Review any displayed sensor fault code.

Checking neoHub Communication

The mesh symbol remains visible while the thermostat is connected to the neoHub.

If the symbol disappears, communication with the hub has been lost.

The pairing procedure can be repeated when the thermostat needs to be added to the hub again.

neoStat-e V3 Thermostat Wiring Diagram

The Thermostat Mode wiring diagram shows the neoStat-e V3 connected to an electric underfloor heating mat or cable.

The diagram also includes connections for the floor temperature probe, optional remote air sensor, and mains supply.

Electrical installation must be completed by a qualified electrician according to the manufacturer’s wiring diagram and applicable local regulations.

Thermostat Wiring Terminals

The terminal strip is labeled:

RT1 — – — RT2 — N — N — LOAD — L

Electric Underfloor Heating Connections

The wiring diagram illustrates:

• A 230V AC mains supply.
• An RCD supply arrangement.
• An electric underfloor heating mat or cable.
• A floor temperature sensor.
• An optional remote air temperature sensor.

The connected heating mat or cable must not exceed the maximum load of 16 amps.

Maximum Heating Load

Floor Probe Connection

The floor temperature probe connects through RT1 and the common sensor terminal.

Optional Remote Air Sensor Connection

A compatible remote air sensor connects through RT2 and the common sensor terminal.

The manufacturer’s original wiring diagram must be followed for exact electrical connections.

Mode 2: Time Clock Operation

Mode 2 allows the neoStat-e V3 to operate as a programmable time clock.

The time clock controls a timed output using programmed ON and OFF periods instead of regulating the output according to room temperature.

Time Clock LCD Display

The Time Clock display includes information about switching status, programmed periods, holidays, and timer overrides.

Time Clock Display Indicators

Programming the Time Clock Switching Times

The time clock supports four ON/OFF switching periods per day or day group.

Each switching period contains an ON time and an OFF time.

Available Time Clock Programming Modes

How to Program Switching Times

1. Use Left and Right to highlight EDIT.
2. Press Tick.
3. Use Left and Right to select the required day or day group.
4. Press Tick.
5. Switching period 1 begins flashing.
6. The current ON time appears.
7. Press Down to view the existing OFF time if required.
8. Select the switching period and press Tick.
9. Use Up and Down to set the ON hour.
10. Press Tick.
11. Use Up and Down to set the ON minutes.
12. Press Tick.
13. Use Up and Down to set the OFF hour.
14. Press Tick.
15. Use Up and Down to set the OFF minutes.
16. Press Tick.
17. Press Right to move to switching period 2.
18. Repeat the procedure for the remaining periods.
19. Highlight DONE.
20. Press Tick to save the programmed switching times.

Disabling an Unused Switching Period

An unused switching period can be disabled by setting its time to –:–.

The time clock skips that period.

Timer Override

Timer Override temporarily switches the timed output on for a selected duration.

How to Activate Timer Override

1. Use Up and Down to select the required override duration.
2. For example, select 02:00 for a two-hour override.
3. Press Tick to confirm.

The main display shows HOLD LEFT with the remaining override duration.

The timed output returns to normal programmed operation after the override period ends.

Holiday Mode in Time Clock Operation

In Time Clock Mode, Holiday Mode maintains the timed output in the OFF state until the selected holiday period ends.

At the configured ending date and time, normal programmed operation resumes.

How to Set a Holiday

1. Highlight HOLIDAY.
2. Press Tick.
3. Use Up and Down to select the holiday ending year.
4. Press Tick.
5. Set the month.
6. Press Tick.
7. Set the ending date and time.
8. Press Tick to confirm.

The holiday begins immediately.

How to Cancel Holiday Mode

1. Highlight HOLIDAY.
2. Press Tick.
3. When CANCEL is highlighted, press Tick again.

Advanced Time Clock Settings

Time Clock Mode includes two optional features.

Time Clock Programming Mode Settings

Weekday/Weekend Programming

Four ON/OFF switching periods can be programmed for Monday through Friday and four separate periods for Saturday and Sunday.

7 Day Programming

Each day can have four independently configured switching periods.

24 Hour Programming

The same switching schedule repeats every day.

Time Clock Mode Wiring Diagram

The Time Clock Mode wiring diagram shows the neoStat-e V3 connected to a 230V AC mains supply and an electrical load.

The diagram identifies a maximum connected load of 16 amps.

Wiring Terminal Identification

Time Clock Load Connection

The manufacturer illustrates:

• A 230V AC mains supply.
• An RCD supply arrangement.
• The LOAD switching terminal.
• The connected electrical load.
• A maximum connected load of 16 amps.

The exact electrical connections must follow the manufacturer’s original diagram.

All electrical wiring must be completed by a qualified electrician.

Factory Reset Instructions

The neoStat-e V3 includes a factory reset function that restores its default settings.

A factory reset cancels parameters entered during setup and pairing. These settings must be configured again after the reset.

How to Factory Reset the neoStat-e V3

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick to turn off the display.
3. SETUP becomes highlighted.
4. Press and hold Tick for 10 seconds.
5. All LCD icons appear for approximately two seconds.
6. The operating mode number begins flashing.
7. Use Left and Right to select the required mode.
8. Select Mode 1 for Thermostat or Mode 2 for Time Clock.
9. Press Tick to confirm.

The thermostat returns to the main display in the selected mode.

After the reset, the required settings, heating schedules, and neoHub pairing must be configured again.

Radio Compliance Information

Heatmiser UK Ltd declares that the radio equipment complies with Directive 2014/53/EU.

Wireless Specifications

The manufacturer’s manual includes a QR code for the neoStat family Statement of Compliance, including information about the security update support period.

Customer Support and Manufacturer Information

IMI Heatmiser provides technical support and product information through its official support channels.

Further product information and technical specifications are available through the manufacturer’s website.

Frequently Asked Questions

1. How is the Heatmiser neoStat-e V3 paired with the neoHub?

Connect the neoHub to the router and register it through the Heatmiser neoApp.

Select ADD NEOSTAT in the app, enter a zone name, and press NEXT.

On the thermostat, highlight Power, hold Tick, enter SETUP, and select Feature 01.

Press Tick again to begin pairing.

The mesh symbol flashes during pairing and remains displayed after a successful connection.

2. How is the neoStat-e V3 factory reset?

Highlight the Power symbol and hold Tick to turn off the display.

When SETUP appears, hold Tick for 10 seconds until all LCD icons appear.

Select Mode 1 or Mode 2 using Left and Right, then press Tick.

The reset cancels previously configured setup and pairing parameters.

3. What is the maximum electric underfloor heating load supported by the neoStat-e V3?

The manufacturer specifies a maximum connected load of 16 amps.

The thermostat operates using a 230V AC supply and can control an electric underfloor heating mat or cable within this limit.

4. Can the neoStat-e V3 control electric underfloor heating using only the air sensor?

No. The manufacturer explicitly states that the air-only sensor configuration must not be used for electric underfloor heating.

Floor Sensor Only or a combined air and floor sensor configuration must be selected.

5. What does error E1 mean on the neoStat-e V3?

E1 indicates a problem with the remote floor temperature probe.

The probe may be disconnected, incorrectly wired, or faulty.

The probe and its wiring should be checked by an appropriate qualified professional.

6. How is the neoStat-e V3 keypad unlocked?

Press Tick once.

Enter the previously configured four-digit PIN in two groups.

Use Up and Down to enter the first two digits and press Tick, then enter the remaining two digits and confirm.

The keypad unlocks and returns to the main display.

7. Which floor temperature probes are compatible with the neoStat-e V3?

The neoStat-e V3 is supplied with a 10K floor temperature sensor probe.

It also supports 12K and 15K probe types.

The manufacturer specifies that changing the probe type should only be performed by an experienced technician who has verified the connected sensor value.

8. Can the Heatmiser neoStat-e V3 operate as a time clock?

Yes. The thermostat supports Mode 2, which operates as a programmable time clock.

In this mode, the electrical output is controlled using scheduled ON and OFF switching periods rather than room temperature regulation.

Add a quick-start setup sectionConsolidate repeated wiring information