Computherm Q3RF Operating Instructions Manual page 23

button of the thermostat several times, until the set
temperature is at least 0.5 °C higher than the temperature
of the room. Following this, the "HEAT" icon indicating that
the heating is turned on should appear on the display of the
thermostat within a few seconds. At the same time, the red
LED light on the receiver unit should switch on to indicate that
the receiver unit has received the command of the transmitter
(thermostat).
If it does not happen, the system should be retuned. For this
purpose press the "M/A" button of the receiver unit and keep
it depressed (for approximately 10 seconds) until the green
LED starts flashing. Then press the "LEARN" button located
on the main panel of the thermostat, and keep it depressed
(for approximately 10 seconds) until the green LED stops
flashing and goes out, so that the receiver unit "learns" the
safety code of the transmitter (thermostat). The safety code
will not be lost even during a power outage, the device
memorizes it automatically.
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