neoStat-HC Thermostat

Heatmiser Heating and Cooling Thermostat

The Heatmiser neoStat-HC is a programmable heating, cooling, and fan ventilation thermostat designed for use with compatible two-pipe and four-pipe heating and cooling systems. It provides temperature regulation, fan speed control, automatic heating and cooling selection, programmable comfort levels, and advanced system configuration.

The thermostat features an LCD display, touch-sensitive navigation keys, an approach sensor, and compatibility with the Heatmiser neoHub. When connected to a neoHub, the neoStat-HC can communicate through the Heatmiser mesh network and be configured as a heating and cooling zone within the neoApp.

The neoStat-HC supports five system configurations, allowing its heating, cooling, fan, and valve outputs to be matched to different installations. Available operating modes include Heat, Cool, Auto, and Ventilation, depending on the selected system type.

Product Overview and Technical Specifications

The neoStat-HC combines heating and cooling control with configurable fan and valve outputs.

Parts, Controls, and Display

The neoStat-HC contains an LCD display and five navigation keys positioned below the screen.

The thermostat also includes an approach sensor that activates the display backlight and touch-key illumination when someone approaches the unit.

Touch Control Buttons

The Tick button performs different functions depending on the currently highlighted menu item and how long the button is held.

LCD Display Symbols and Indicators

The LCD displays the thermostat’s current operating condition, programmed settings, and active functions.

Heating and Cooling Indicators

The flame icon appears when the thermostat requests heating.

The cooling symbol appears when cooling is active.

When the flame icon is absent, the thermostat does not currently require heating to maintain its set temperature.

Approach Sensor

The neoStat-HC includes an approach sensor that detects when someone moves toward the thermostat.

As a person approaches, the touch keys and LCD backlight illuminate automatically.

This function makes the controls easier to identify and operate in a dark room.

Safety Instructions and Installation Requirements

The neoStat-HC operates using a 230V AC electrical supply.

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

The correct wiring arrangement depends on the system type and valve configuration.

Installation Precautions

• Mount the thermostat at eye level.
• Avoid installing the thermostat near a direct source of heat.
• Do not apply excessive pressure to the LCD screen because permanent damage may occur.
• Use a wall back box with a minimum depth of 35 mm.
• Select the correct System Type to match the connected heating, cooling, fan, and valve equipment.
• Follow the manufacturer’s wiring diagram corresponding to the selected system type.

The System Type configuration must match the installed equipment because it determines how the thermostat operates its switched outputs.

Installing the neoStat-HC Thermostat

The neoStat-HC is designed for flush mounting into a wall back box.

Step 1: Remove the Thermostat 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 front panel from the back plate.
4. Place the front panel in a safe location.

Step 2: Connect the Electrical Wiring

The thermostat terminals must be connected according to the wiring diagram for the selected System Type.

The manufacturer provides separate diagrams for normally closed valves, normally open valves, three-wire valves, fan coil systems, and separate heating and cooling valves.

The electrical connections must be completed by a qualified electrician.

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 back box.

Step 4: Reattach the Front Panel

1. Position the thermostat front section against the mounted back plate.
2. Carefully clip it into position.
3. Tighten the retaining screw at the bottom of the thermostat.

The manufacturer’s illustrated mounting procedure appears on PDF pages 4–5.

Selecting the Correct System Type

The System Type setting determines the thermostat’s available operating modes, fan behavior, and electrical output configuration.

There are five available System Types.

System Type 01: Two-Pipe System With Manual Heating or Cooling Selection

System Type 01 supports manually selected heating, cooling, and ventilation operation.

It supports three-speed fan control and normally open or normally closed valve configurations.

Available functions:

• Heating
• Cooling
• Ventilation
• Automatic or manual fan speed during heating
• Automatic or manual fan speed during cooling
• Manual three-speed fan selection during ventilation

The valve outputs are:

• V1: Normally Open
• V2: Normally Closed

The fan terminals are Hf, Mf, and Lf.

System Type 02: Two-Pipe Cooling-Only System

System Type 02 is designed for cooling and ventilation operation.

Heating control is not available in this configuration.

Available functions:

• Cooling
• Ventilation
• Automatic or manual fan speed during cooling
• Manual three-speed fan selection during ventilation

The valve outputs support normally open and normally closed connections.

System Type 03: Two-Pipe System With Twin Valve Outputs

System Type 03 provides separate outputs for heating and cooling valves.

The thermostat supports Heat, Cool, Auto, and Ventilation modes.

Fan operation is available for cooling and ventilation, but the system type does not provide a fan output for heating.

Valve outputs:

• V1: Cooling
• V2: Heating

Fan operation:

• Cooling: Automatic or manual
• Ventilation: Manual three-speed
• Heating: No fan output

System Type 04: Four-Pipe Heating and Cooling System

System Type 04 supports separate heating and cooling valves and three-speed fan control.

The available operating modes are Heat, Cool, Auto, and Ventilation.

Fan operation:

• Heat: Automatic or manual
• Cool: Automatic or manual
• Auto: Automatic or manual
• Ventilation: Manual three-speed

Valve outputs:

• V1: Cooling
• V2: Heating

System Type 05: Two-Pipe Cooling With Two-Stage Heating

System Type 05 supports cooling and two-stage heating.

The first heating stage operates without a fan output. The system type description identifies automatic and manual fan operation during second-stage heating.

Cooling and ventilation also support fan control.

System Type 05 outputs:

• V1: Cooling and second-stage heating
• V2: Heating
• Hf, Mf, Lf: Fan speed outputs

The correct valve and fan connection arrangement must be verified against the manufacturer’s diagram for the installed system.

System Type Comparison

How to Configure the System Type

1. Use the Left and Right arrows to highlight the Power symbol.
2. Press and hold Tick for approximately 3 seconds to switch off the display.
3. Press Tick to enter SETUP.
4. Repeatedly press Up until Feature 10 appears in the upper-right corner.
5. The large number in the center of the display represents the selected System Type.
6. Use Left and Right to select the required value from 01 to 05.
7. Press Tick to confirm the selection.

Pairing the neoStat-HC With the neoHub

The neoStat-HC can connect to a Heatmiser neoHub for communication with the Heatmiser neoApp.

The neoHub must first be connected to the network and registered in the app.

Step 1: Connect the neoHub

1. Connect the neoHub to the router using the Ethernet cable supplied with the hub.
2. Connect the neoHub power supply.

Step 2: Register the neoHub in the neoApp

1. Download the Heatmiser neoApp.
2. Register an account.
3. Sign in to the app.
4. Select Add neoHub.
5. Follow the instructions in the app to pair the hub with the account.

Step 3: Add the Thermostat Zone

Once the neoHub has been added:

1. Select Add Zone in the neoApp.
2. Enter a name for the zone.
3. Start the pairing countdown when prompted by the app.

Step 4: Activate Pairing on the neoStat-HC

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick to access the off/setup screen.
3. SETUP will be highlighted.
4. Press Tick once.
5. Feature 01 appears.
6. Press Tick again to activate hub pairing.

The mesh symbol begins flashing while pairing is in progress.

Once the thermostat connects successfully, the mesh symbol remains continuously displayed.

Step 5: Complete the Setup

In the neoApp:

• Select ADD ANOTHER to add more zones.
• Select FINISH to complete the setup.

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

Additional neoStat thermostats can be added by selecting the + icon and choosing Add Thermostat in the app.

Understanding the Heatmiser Mesh Network

The neoStat-HC communicates through a mesh network.

A mesh network allows compatible neoStat thermostats to send and receive wireless communication through other thermostats on the network.

Signals can be relayed between participating devices until they reach their destination.

This arrangement can extend the communication range and improve network stability compared with ordinary radio-frequency thermostat connections.

Mesh Connection Indicator

When the neoStat-HC is communicating with the neoHub, the mesh symbol is displayed.

If the symbol disappears, the connection to the neoHub has been lost.

Temperature Display and Set Temperature

The neoStat-HC normally displays the ambient room temperature.

When compatible wireless remote sensors are paired through a neoHub, the displayed temperature automatically represents an average between the thermostat and remote sensor readings.

Viewing the Set Temperature in Heat or Cool Mode

1. Press Up or Down once.
2. The SET screen displays the selected target temperature.
3. Press Tick to return to the main display.

Viewing Heat and Cool Set Temperatures in Auto Mode

1. Press Up or Down once.
2. The display shows the set temperature associated with the currently active heating or cooling mode.
3. Press Tick to view the other set temperature.
4. Press Tick again to return to the main display.

The SET screen closes automatically after five seconds if Tick is not pressed.

Turning the Thermostat On and Off

The thermostat can be switched off using the Power menu.

Turning the Thermostat Off

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick for approximately 3 seconds.
3. The display turns off.

The thermostat display and heating output are switched off.

Turning the Thermostat On

Press Tick once.

The thermostat returns to its normal operating display.

Heating Demand Indicator

The flame symbol indicates an active heating demand.

When the flame symbol is absent, there is no current heating requirement to achieve the selected temperature, although the thermostat remains active.

Setting the Clock and Calendar

The neoStat-HC uses its clock and calendar for heating schedules and holiday programming.

How to Set the Time and Date

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

Selecting Heating, Cooling, Auto, or Ventilation Mode

The available operating modes depend on the configured System Type.

Available Operating Modes

How to Change the Operating Mode

1. Use Left or Right to highlight MODE.
2. Press Tick.
3. Repeatedly press Tick to move through the available operating modes.
4. Stop when the required mode is selected.

Only the modes supported by the configured System Type are available.

Fan Speed Control

The neoStat-HC supports automatic and manual fan operation according to the selected System Type.

Manual fan control provides three speeds:

• Low
• Medium
• High

Automatic fan operation selects the appropriate speed according to the difference between the set temperature and the measured temperature.

Automatic Fan Speed Selection

How to Change Fan Speed

1. Use Left or Right to highlight FAN.
2. Press Tick.
3. Continue pressing Tick to select the required fan setting.

Fan settings depend on the operating mode and System Type.

Programming Heating and Cooling Comfort Levels

The neoStat-HC supports programmed temperature settings for different periods of the day.

The available programming options are Weekday/Weekend, 7 Day, and 24 Hour.

A non-programmable setting is also available for manual temperature operation.

Programming Modes

Default Heating Comfort Levels

Default Cooling Comfort Levels

Each programmed period establishes the temperature maintained from its starting time until the next scheduled comfort period.

How to Program Comfort Levels

1. Use Left or Right to highlight EDIT.
2. Press Tick.
3. Use Left and Right to select the 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 set the hour.
8. Press Tick.
9. Use Up and Down to set the minutes.
10. Press Tick.
11. Use Up and Down to adjust the target temperature.
12. Press Tick to confirm.

When Auto Mode is selected, the thermostat also requests the COOL set temperature after the HEAT temperature has been entered.

13. Confirm the cooling temperature when required.
14. Press Right to move to LEAVE.
15. Press Tick to edit its settings.
16. Repeat the same procedure for RETURN and SLEEP.
17. Highlight DONE and press Tick to save the program.

Skipping an Unused Comfort Period

Any unused comfort period can be skipped by changing its time to –:–.

The thermostat ignores the disabled period and continues to the next programmed level.

Programming in Auto Mode

Auto Mode requires both heating and cooling set temperatures for each programmed level.

To disable cooling for a particular comfort period, continue pressing Up while editing the COOL setting until –.- appears.

Manual Temperature Control

The Up and Down buttons allow the current target temperature to be adjusted directly.

How to Change the Set Temperature

1. Press Up or Down.
2. SET appears on the display with the target temperature.
3. Use Up and Down to adjust the temperature.
4. Press Tick to confirm the setting.

In Auto Mode, both HEAT and COOL set temperatures must be configured.

When a programmed heating or cooling schedule is active, the temporary temperature adjustment remains effective until the next comfort period.

The thermostat then returns to the programmed settings.

Temperature Hold Function

Temperature Hold temporarily overrides the normal program and maintains a selected temperature for a specified period.

How to Set Temperature Hold

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

The LCD displays HOLD LEFT together with the remaining hold time.

The duration counts down until the selected period ends.

Once the hold finishes, the thermostat automatically resumes its normal program.

Temperature Hold in Auto Mode

When Auto Mode is selected, both HEAT and COOL set temperatures must be entered for the hold period.

How to Cancel Temperature Hold

1. Highlight HOLD.
2. Press Tick twice to confirm cancellation.

Locking and Unlocking the Thermostat

The neoStat-HC includes a keypad lock that uses a four-digit PIN.

How to Lock the Keypad

1. Use Left or 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 final two digits.
7. Press Tick to confirm.

The thermostat returns to the main screen and displays the keypad lock indicator.

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 selected PIN.
4. Press Tick.
5. Enter the final two digits.
6. Press Tick.

The keypad unlocks and returns to the normal display.

The lock symbol appears only while the keypad lock is active.

Frost Protection and Standby Mode

Frost Protection allows the thermostat to maintain a reduced temperature when normal heating is not required.

How to Activate Frost Protection

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

The frost protection icon appears on the display.

In heating operation, the thermostat requests heating only when the measured room temperature falls below the selected frost protection temperature.

If heating is activated in frost mode, the flame symbol appears.

How to Cancel Frost Protection

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

The frost protection symbol disappears.

Frost Protection Temperature Settings

Standby in Cooling and Ventilation Modes

When frost protection is selected while the thermostat is operating in cooling or ventilation mode, the thermostat enters Standby Mode.

This is different from active heating frost protection.

Holiday Mode

Holiday Mode reduces the heating temperature to the frost protection setting for a selected period.

At the end of the holiday, the thermostat automatically resumes its normal programmed operation.

Important: If the thermostat is left in Cool-only mode, Holiday Mode places it into standby. Frost protection is therefore unavailable in that condition.

How to Activate Holiday Mode

1. Use Left and Right to highlight HOLIDAY.
2. Press Tick.
3. Use Up and Down to select the year in which the holiday will end.
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.

Holiday Mode begins immediately.

The thermostat returns to normal programming at the specified ending date and time.

How to Cancel Holiday Mode

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

Ventilation Mode

Ventilation Mode provides fan control without activating heating or cooling outputs.

This mode is available with all five System Types.

Ventilation operation is manual and does not use a timed ventilation program.

How to Select Ventilation Mode

1. Highlight MODE using Left or Right.
2. Press Tick.
3. Continue pressing Tick until VENT is selected.

How to Control the Fan in Ventilation Mode

1. Highlight FAN.
2. Press Tick repeatedly to select the required fan setting.

The available options are:

• Low
• Medium
• High
• Off

Automatic fan speed is not used in Ventilation Mode.

Advanced Settings and Feature Menu

The neoStat-HC provides 14 configurable features for installation and advanced operation.

These settings control switching behavior, comfort programs, system configuration, fan operation, and valve functions.

How to Open the Feature Menu

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick for 3 seconds.
3. SETUP will be highlighted.
4. Press Tick once.
5. The display shows the current feature number and setting value.
6. Use Up and Down to move between features.
7. Use Left and Right to change the selected setting.
8. Press Tick to confirm and exit the setup menu.

Advanced Feature Settings Table

Feature 01: neoHub Pairing

Feature 01 is used to connect the neoStat-HC to a Heatmiser neoHub.

The mesh indicator provides visual confirmation of a successful hub connection.

Feature 02: Switching Differential

Switching Differential controls the temperature difference between the target temperature and the point at which heating begins.

For example, with a set 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 setting determines the temperature maintained in Frost Protection Mode.

The available range is 7–17°C.

The default temperature is 12°C.

Feature 04: Output Delay

Output Delay prevents rapid switching of the thermostat’s output.

The adjustable range is 0–15 minutes.

The default setting is 0 minutes, meaning no delay.

Feature 05: Temperature Adjustment Limit

The Up/Down Temperature Limit restricts manual temperature changes.

The limit also applies while the thermostat is locked, allowing restricted temperature adjustment.

The setting range is 0–10°C.

Feature 06: Optimum Start

Optimum Start calculates when heating should begin so that the programmed temperature can be reached at the selected time.

The thermostat uses its recorded temperature increase rate to estimate the required warm-up duration.

For example, a calculated rate of change of 20 indicates that approximately 20 minutes are needed to raise the temperature by 1°C.

The Optimum Start setting can be adjusted from 0 to 5 hours.

Feature 07: Rate of Change

Rate of Change represents the number of minutes the thermostat calculates are needed to increase the room temperature by 1°C.

This value is used by the Optimum Start function.

Feature 08: Programming Mode

The thermostat supports the following modes:

Feature 09: Temperature Format

The displayed temperature units can be changed.

• 00: Celsius
• 01: Fahrenheit

Celsius is the factory default.

Feature 10: System Type

Feature 10 selects the installed heating and cooling system configuration.

The setting must match the connected equipment and wiring arrangement.

Feature 11: Deadband

Deadband applies when automatic heating and cooling operation is enabled.

It establishes separation between heating and cooling temperature setpoints so that the two functions do not operate against one another.

The adjustable range is 2–10°C.

For example, the manufacturer describes a heating setpoint of 20°C with a deadband setting of 2°C. In this example, the lowest permitted cooling setpoint is 23°C.

If the cooling setpoint is changed to 22°C, the heating setpoint is automatically moved to 19°C.

Feature 12: Constant Fan

Constant Fan determines what happens to the fan after heating or cooling demand ends.

When Constant Fan is enabled:

• The fan operates at the appropriate speed while there is a heating or cooling demand.
• After demand ends, the fan continues running at Low speed.

When disabled, the fan stops after heating or cooling demand ends.

The manufacturer notes that this feature is disabled during heating operation when System Type 03 is selected.

Feature 13: Cool Air Proof

Cool Air Proof is intended to prevent cold air from being blown by the fan coil when heating is required.

The function opens the coil valve for a selected period before activating the fan.

Available delay settings are:

Feature 14: Valve Cycling

Valve Cycling periodically operates valves that have remained inactive.

When enabled, the thermostat operates the affected valves for five minutes after the selected inactivity period.

The operation is randomized to avoid simultaneous demand from multiple systems.

Valve Cycling Settings

Recalibrating the neoStat-HC

The thermostat provides a temperature recalibration function.

Important: Heatmiser warns that incorrect recalibration could cause the thermostat to operate improperly. The manufacturer’s support team should be contacted before attempting recalibration.

Temperature Recalibration Procedure

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

The calibration procedure should only be performed after obtaining the manufacturer’s guidance.

Error Codes and Troubleshooting

The neoStat-HC displays an error code when it detects a fault with its temperature sensor.

Error Code E0

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

Technical assistance should be obtained from Heatmiser.

Common Operating Checks

neoStat-HC Wiring Diagrams

The manufacturer provides five electrical wiring diagrams for the supported system configurations.

All wiring must be completed by a qualified electrician and comply with local installation regulations.

The electrical diagrams show a 230V AC supply and the thermostat’s fan and valve switching terminals.

Wiring Terminal Identification

The terminal strip shown in the diagrams is labeled:

The function of V1 and V2 depends on the selected System Type.

Normally Closed Valve Wiring — System Types 01 and 02

The normally closed valve diagram shows the thermostat connected to:

• A 230V AC supply
• A three-speed fan
• A normally closed valve

The diagram uses the valve connection appropriate to the normally closed configuration.

Original manual reference: PDF page 30 (printed page 29).

Normally Open Valve Wiring — System Types 01 and 02

This wiring arrangement shows a three-speed fan and a normally open valve connected to the thermostat.

The diagram identifies the valve connection and the electrical supply.

Original manual reference: PDF page 31 (printed page 30).

Three-Wire Valve Connection — System Types 01 and 02

This diagram illustrates a three-wire valve arrangement with separate opening and closing connections.

It also includes the three-speed fan wiring.

Original manual reference: PDF page 32 (printed page 31).

Fan Coil and Wet System Wiring — System Types 03 and 05

This diagram covers fan coil and wet system arrangements involving heating and cooling outputs.

It identifies the three-speed fan, heating connections, and valve outputs.

The diagram includes a note concerning the absence of fan output for heating. The System Type descriptions should also be consulted for the staged heating behavior of Type 05.

Original manual reference: PDF page 33 (printed page 32).

Separate Heating and Cooling Valve Wiring — System Type 04

This diagram illustrates the four-pipe system arrangement.

It shows:

• Separate cooling and heating valves
• Three-speed fan connections
• 230V AC supply
• Two-port motorized valves

Original manual reference: PDF page 34 (printed page 33).

The manufacturer’s wiring diagrams show switching contacts in their no-demand state and must be used for the exact connection arrangements.

Factory Reset Instructions

The factory reset function returns the neoStat-HC to its default configuration.

A factory reset cancels parameters entered during setup and pairing. The required system configuration and neoHub pairing must be completed again afterward.

How to Factory Reset the neoStat-HC

1. Use Left and Right to highlight the Power symbol.
2. Press and hold Tick until the display switches off.
3. SETUP will be highlighted.
4. Press and hold Tick for 10 seconds.
5. All display icons appear for approximately two seconds.
6. The Setup entry screen appears.
7. Use Down to highlight the Power symbol.
8. Press Tick to confirm and return to the main display.

The thermostat returns to its default settings.

The initial system configuration and pairing procedures must then be repeated as required.

Customer Support and Manufacturer Information

Heatmiser provides technical support and product information through its support team and official website.

The manufacturer provides additional technical specifications through its website.

Radio Compliance

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

The manual identifies a radio frequency of 2.4 GHz and a power value of 3.54 dBm.

Frequently Asked Questions

1. How is the Heatmiser neoStat-HC thermostat programmed?

The thermostat is programmed through the EDIT menu.

A day or day group is selected, followed by the WAKE, LEAVE, RETURN, and SLEEP comfort periods. Each period can be assigned a time and temperature.

In Auto Mode, both heating and cooling temperatures must be entered.

2. How is the neoStat-HC factory reset?

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

When SETUP is highlighted, hold Tick for 10 seconds until all LCD icons appear. After the Setup screen returns, highlight the Power symbol and press Tick.

The reset clears setup and pairing parameters.

3. How is the Heatmiser neoStat-HC connected to the neoHub?

The neoHub must first be connected to the router and paired with an account in the neoApp.

The thermostat is then added as a zone using Feature 01 in the SETUP menu.

The mesh icon flashes during pairing and remains visible after a successful connection.

4. What does error E0 mean on the neoStat-HC?

E0 indicates an internal temperature sensor fault.

Heatmiser technical support should be contacted for assistance.

5. How is the neoStat-HC keypad unlocked?

Press Tick once and enter the previously configured four-digit PIN.

The PIN is entered in two groups of two digits using Up and Down, with Tick confirming each group.

6. Does the Heatmiser neoStat-HC support both heating and cooling?

Yes. The neoStat-HC provides heating and cooling control, including an Auto mode on supported system configurations.

The available operating modes depend on the selected System Type.

7. How is the fan speed changed on the neoStat-HC?

Highlight FAN using Left or Right, then repeatedly press Tick to select the required fan setting.

Manual fan speeds include Low, Medium, and High. Automatic fan speed is also supported in applicable operating modes and System Types.

8. What happens if the neoStat-HC loses its neoHub connection?

When the neoStat-HC loses communication with the neoHub, the mesh symbol disappears from the display.

A missing mesh icon indicates that the hub connection has been lost.