COMPUTHERM E300FC

Programable, digital Wi-Fi fan-coil thermostat for 2- and 4-pipe systems

With the COMPUTHERM E280FC and COMPUTHERM E300FC Wi-Fi fan-coil thermostats, you can control the device connected to the thermostats (e.g. fan-coil heating/cooling/ventilating device) via the Internet and check its operation using your mobile phone or tablet. By using the products, the heating of your apartment, house or resort can be controlled anytime and from anywhere. They can be used for both 2-pipe and 4-pipe heating/cooling systems. The thermostats also offer the possibility of automatic controlling based on temperature and time. The thermostats have three outputs for fan control and two outputs for valve control. When switched on, the mains phase appears on one of the fan outputs and 230 V appears on the valve outputs.

With the help of this product you will be able to control the heating of your flat, house or holiday home anytime, from anywhere.
It is especially useful if:

  • you are not using your flat or house based on a regular schedule,
  • you are travelling away from you home for an indefinite time during the heating season  
  • you would like to use you holiday home during the heating season.

The COMPUTHERM E300FC Wi-Fi fan-coil thermostat is a more advanced version of the COMPUTHERM E280FC model, with black instead of white colour, glass screen and even more modern display. Recessed installation in the wall and constant power supply is required.

Important functions:

  • Can be controlled remotely
  • Easy connection to a Wi-Fi network
  • Manual and programmed mode
  • Easy switching between cooling, heating, ventilation modes, within software
  • Temperature sensor calibration
  • Multi-user control
  • Defrosting function
  • Keylock function 
  • 2 years warranty

Technical data:

  • Wired product! Design that can be recessed into the wall, therefore a mounting box or lifting frame is required for installation!
  • User interface: touch buttons, mobile application
  • Temperature measurement accuracy: ±0,5 °C
  • Adjustable temperature range: 5 °C to 99 °C (in 0.5 °C increments)
  • Selectable switching sensitivity: ±0.1 °C to ±1.0 °C (in 0.1 °C increments)
  • Thermometer calibration range: ±3.0 °C (0.1 °C-os increments)
  • Supply voltage of the receiver unit: 230 V AC; 50 Hz
  • Output voltage: 230 V AC
  • Loadability: valve outputs 3(1) A, fan outputs 5(1) A
  • Operating frequency: Wi-Fi (b/g/n) 2,4 GHz
Computherm - Wi-fi termosztátok -  COMPUTHERM E300FC - Quantrax Kft.
Computherm - Wi-fi termosztátok -  COMPUTHERM E300FC - Quantrax Kft.
Computherm - Wi-fi termosztátok -  COMPUTHERM E280 - Quantrax Kft.
Computherm - Wi-fi termosztátok -  COMPUTHERM E280 - Quantrax Kft.

Download the most important documents related to the product

To control this product Download the the COMPUTHERM E Series app for free from here:

Visit for helpful videos
and subscribe to the YouTube channel!

 

FAQ: 

What purpose can the COMPUTHERM E300FC Wi-Fi thermostat be used for?

The COMPUTHERM E300FC Wi-Fi room thermostat has been specifically designed to control fan-coil heating and cooling as well as ventilation systems. The thermostat connects your smart phone or tablet to the device to be controlled remotely. With the help of E300FC you can set the temperature of your home hour by hour, and you can set and control it via the Internet.
Turning  on  and  off  the  controlled  appliance  allows  you  to  maintain  constant  comfortable temperature without suffering any unnecessary energy losses. This product is especially useful when you do not use your flat or house according to a predefined schedule, you leave your home for an uncertain period of time during the heating season or you intend to use your holiday home during the heating season as well.
The appliance can be easily controlled via the Internet or by using a touch screen interface, and its operating conditions can be inspected continuously. It can be easily connected to any 230 V fan-coil device with three fan speeds, as well as valve adjusters that open and close the valves. The thermostats have three outputs for fan control and two outputs for valve control. With their help, a heating system can be divided into zones without a separate zone controller.

How E300FC will reduce the total amount of your bill?

With E300FC you can set your desired temperature for every hour of the day and night. This way the temperature in your home always meets your requirement. It provides comfort without consuming energy unnecessarily. It always consumes as much energy as needed and you can save up to 30 percent of your heating costs. In addition, remote control can also save energy for you because this way you can remotely turn off the device to be controlled when you are away then turn it on later.

What type of appliances can be controlled by COMPUTHERM E300FC?

COMPUTHERM E300FC type switching-mode room thermostat is able to control vast majority of the boilers and air-conditioning equipment available on the Hungarian market. It can be easily connected to any gas boiler having a two-wire thermostat connection point and to any air conditioning apparatus or electrical apparatus, regardless of whether they have a 24 V or 230 V control circuit.

Can E300FC be used for air-conditioning equipment?

The E300FC thermostat can also be used to control an air-conditioner.

For products purchased before October 2020: For controlling a cooling system the controlled cooling device should be connected in a way that differs from the method employed for the heating mode, according to the Instruction Manual.

For products purchased after October 2020: If cooling is controlled, the thermostat must be switched to cooling mode in the application or using the thermostat's touch buttons. In this case, it is not necessary to change the connection.

Can E300FC be used to control a heating system only?

No, the appliance is able to control air-conditioning equipment and any other device which can be operated only by its ON/OFF function.

For products purchased before October 2020: For controlling a cooling system the controlled cooling device should be connected in a way that differs from the method employed for the heating mode, according to the Instruction Manual.

For products purchased after October 2020: If cooling is controlled, the thermostat must be switched to cooling mode in the application or using the thermostat's touch buttons. In this case, it is not necessary to change the connection.

What type of battery / mains supply is required for the operation of E300FC?

No batteries are required to operate the E300FC. A 230 V mains supply is required to operate the thermostat. It is important to know that the installation of the product requires a 65-mm junction box (as with sockets) or a lifting frame if it is not possible to sink it into the wall.

Where can you buy it?

Search  this  product  at  our  reseller  partners.  The  list  of  our  reseller  partner  is  available  at  the following link: Partners.

Where you can find the Instruction Manual of the appliance?

Installing and operating instructions for theE300FC thermostat are available at the following website: Instruction Manual

From where can you download mobile application of E300FC?

If you use an Android operating system you can download the application from Google Play Store. If you use iOS operating system you can download the application from iTunes Store. The name of the application is COMPUTHERM E Series.

How many E300FC appliances can be controlled from a single telephone?

The number of the appliances is unlimited. Every commissioned E300FC appliance can be added to your phone application and can be controlled from your phone.

Will several E300FC thermostats used in the same flat disturb each other’s operation?

No. Each thermostat is connected to the local Wi-Fi network separately and this solution guarantees reliable and trouble-free operation of the appliances.

Is it absolutely necessary to have a Wi-Fi connection with Internet access for using E300FC?

The appliance is able to operate with full functionality even without having a Wi-Fi connection with Internet access by means of the touch keys of the thermostat, but the thermostat can be controlled remotely only if it is connected to a Wi-Fi connection with Internet access.

How can you connect the appliance?

For   more   detailed   information   please   refer   to   the   Instruction   Manual   of   the   appliance (Instruction Manual).

Where should the thermostat be placed?

 It is advisable to place the thermostat in a room used for regular or long-term stays in such a way that it faces the direction of the room's natural air movement, but is not exposed to drafts or extreme heat (e.g. sunlight, refrigerator, chimney, etc.). Its optimal location is at a height of 0.75-1.5 m from the floor level.

Where should the thermostat and its floor temperature sensor be located?

It is expedient to locate the thermostat in a room where you stay regularly or a long period of time so that the thermostat is oriented in the direction of the natural ventilation of the room but is not exposed to draught or extreme heat (e.g. sunlight, refrigerator, chimney, etc.). Its optimal location is at a height of 0.75-1.5 m from the floor level.

Using a floor temperature sensor output(s) can be controlled easily by the temperature measured by this sensor. On the other hand, with its help a maximum temperature can be set and the thermostat switches off the outputs when this temperature is reached. For underfloor and electrical heating systems this function can be especially useful for safety reasons. If you want to measure the floor temperature it is recommended that the temperature sensor is placed in short copper pipe and this pipe is sunk into the floor so that it can be replaced easily in the event of a failure.

Can a floor temperature sensor be connected to the device?

No, there is no output for this on the device. In the case of the E300FC, the built-in temperature sensor is used to measure the temperature.

What should I do when the appliance display shows Error (Er, Err)?

If the display shows Error (Er, Err), the set temperature sensor does not give a signal to the thermostat. If the floor temperature sensor is not connected, select Built-in temperature sensor in the Sensor mode (SEN) function in the phone application or in the device's menu. If the floor sensor is connected, check that the connection is correct.

What should I do when the appliance switches but 230 V mains voltage does not appear at its output?

The appliance has potential free (voltage free) output connection points therefore 230 V voltage normally does not appear at its outputs, it only links the two connected wires or disrupts the connection between them. If you want 230 V voltage to appear at the output of the appliance when it is switched off then you have to connect a mains phase wire to one of the connection points according to the Instruction Manual. Before connection the phase wire must be de-energized and the connection must be carried out by a competent person.

What should I do if I am of the opinion that the thermometer of the thermostat measures inaccurately?

Temperatures measured by the appliance can be calibrated and the modified temperature values appear on the display. Calibration of measured temperatures can be carried out according to Chapter 10.2. of the Instruction Manual.

What should you do if the signal of your Wi-Fi router is weak and thus E300FC is outside the range of the router?

If it is possible, put the router closer to your E300FC appliance. Another option is to place a Wi-Fi signal booster between the router and E300FC to extend the range of the router.
What should you do if can not conncect the thermostat to the Wi-Fi network?

Download and read the document with our suggestions for Wi-Fi network connection.

What should you do if you encounter a problem related to the Wi-Fi network?

If the appliance cannot be controlled via the Internet because the application indicates that the appliance is inaccessible and does not respond to the modifications then the connection between the appliance and the web interface has been interrupted. This situation may be due to several reasons. The problem is most probably caused by the Wi-Fi router being used. It is expedient to restart the routers from time to time by interrupting and restoring power supply. In most of the cases this type of problems is solved by restarting the router. If the appliance is still inaccessible at the front end after a few minutes have elapsed then it is recommended that the appliance is reconnected to the Wi-Fi network according to Chapter 7.2. of the Instruction Manual. If the connection is successful but the appliance is still inaccessible then it is recommended that the router is set to factory default, because it may occur that the device cannot be connected to the Internet because of some settings. While the thermostat is inaccessible via the Internet you can control it manually with the touch keys of the thermostat.

How does this product continue to function after a power outage?

The appliance does not work without power supply but it can memorize the settings. If the power supply  is  disturbed  (power  outage),  it  is  able  to  continue  to  function  without  any  external intervention after the power supply is restored, if this option is chosen among settings (see Chapter 10.6. of the Instruction Manual).

How is default setting of the appliance restored (reset)?

All settings of the thermostat, except for date and time, are set back to the factory default settings according to Chapter 10.8. of the Instruction Manual.