The COMPUTHERM Q72RF (TRV) is a special wireless room thermostat designed to control the COMPUTHERM Q12RF actuator (not included). It can also control other wireless devices in the COMPUTHERM Q series.

Two 1.5 V alkaline batteries (type: LR6, size: AA) are required for the operation of the appliance. Only good quality alkaline batteries may be used. Other batteries known as durable or long life batteries (conventional  carbon-zinc  batteries),  half  dead batteries  and  chargeable  accumulators  are  not suitable for the operation of this appliance.

In normal use the expected lifetime of the batteries is approx. 1.5 to 2 years.

It means that the temperature measured by the appliance falls outside the measurement range of the temperature sensor: LO indicates that the temperature is too low, while HI shows that the temperature is too high. This may occur when the appliance is in an extremely cold or warm environment or the temperature sensor suffers a physical damage (e.g. it gets crushed with the effect that the two pins of the temperature sensor touch or the temperature sensor breaks off) or the temperature sensor becomes defective for some other reason.

It is expedient to locate the thermostat on the wall of 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.). Do not use in wet, chemically aggressive or dusty environment. Its optimal location is at a height of 0.75 - 1.5 m from the floor level.  The appliance can easily be snapped onto its base and then placed on any horizontal surface (e.g. table, shelf, top of a commode) or, using the screw holes on the back side, can be mounted to a wall as well.

It is not needed for the operation of the transmitting unit of the thermostat, you only need two 1.5 V alkaline batteries (type: LR6, size: AA) for this purpose.

No. Each thermostat and accompanying receiving unit(s) has its own security code which ensures reliable and trouble-free operation of the appliances. Each receiving unit receives signals only from the thermostat that has the same security code. As a result, practically unlimited number of appliances can be used in the immediate vicinity of each other without causing any problem in the communication between the devices.

Out of the buttons located on the front panel of the thermostat press once the  button briefly then press the SET button again and hold it down and in the meantime press the COPY button briefly. Now lettering HEAT or COOL appears on the display to indicate the selected mode. Then you can switch between operating modes with +/- buttons.

Ennek több oka is lehet. A leggyakrabban előforduló problémák:

● nem megfelelő elem (pl. lemerült, vagy nem alkáli elem) használata
● bizonytalan rádiófrekvenciás kapcsolat (részletesen lásd lentebb)
● az adóegységet és az állítóművet/vevőegységet valaki széthangolta, és azokat újra össze kell hangolni (az újrahangolás lépései megtalálhatók a kezelési útmutatóban)

There are various reasons for this. The most frequently encountered problems are:

• unsuitable batteries (e.g. dead batteries or non-alkaline batteries) are being used
• incorrect connection (which, in unfortunate cases, can destroy the relay in the appliance or the electronic system of the controlled device)
• unstable RF connection (see details below)
• somebody  has  desynchronized  the  receiving  and  transmitting  units  and  they  should  be resynchronized (the steps of resynchronization are described in the Instruction Manual).

After power supply is restored, at the beginning the output of the receiving unit is always in off mode. However, since the transmitting unit repeats its current switch command every 5 minutes, the control of the heating/cooling system will return to the mode set earlier after 5 minutes at the latest.

There may be several reasons why the transmitter does not communicate with the receiver or this communication is unsteady. To solve the problem, we recommend that you adopt the following proposals:

•     Replace the battery in the transmitting unit of the thermostat. Remember that only good quality alkaline batteries may be used for the appliance. Other batteries known as durable or long life batteries (conventional carbon-zinc batteries), half dead batteries and chargeable accumulators are not suitable for the operation of this appliance.
•     Check whether the two units have been synchronized. If the two units fail to communicate even when they are very close to each other then they should probably be resynchronized according to the Instruction Manual.
•     Place  the  transmitter  and  actuator/receiver  of  the  thermostat  closer  to  each  other  or  put  a COMPUTHERM Q2RF signal booster plug preferably at a point midway between the two units, if you think that they are too far apart.
•     Check that the receiving and transmitting units of the thermostat have been installed in accordance with the specification. If not, relocate them according to the Manual (see above for details).
•     Avoid using certain RF devices that transmits stronger than normal in the vicinity of the appliance (certain baby monitors and wireless headphones, as our experience indicates).

Yes. COMPUTHERM  wireless  thermostats  are  able  to  control  several  RF  units  simultaneously, including Q1RX plug, Q3RF and Q7RF receiving units. To establish a connection put the receiving units into synchronization mode then press and hold the SET and Day buttons on the Q7RF until LEDs on the receiving units stop blinking.

You can enter the setting menu of the thermostat by pressing the button for 2 seconds. Then the continuously illuminated time and the flashing English abbreviation of the relevant day (Monday: MON; Tuesday: TUE; Wednesday: WED and so on) appear on the screen. In the setting menu you can modify the current setting with buttons and  and touching the  button you can move to the next setting. The name of the setting is T CALIB.

The accuracy of the thermometer of the thermostat is ±0,5 °C. The temperature displayed by the thermostat can be modified by maximum ±3.0 °C / ±6,0 °F compared to the temperature measured by the temperature sensor, in increments of ±3.0 °C / ±6.0 °F or 0.1 °C / 0.1 °F.

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

Installing and operating instructions for the Q20RF thermostat are available at the following website: Instruction Manual.

To restore factory default setting choose option “RES” at “RESET” function in the setting menu and move on with the  button.