Computherm Q3RF Operating Instructions Manual page 25

ATTENTION! If the two parts of the device can only be placed
on the edge of the wireless (radio-frequency) range or out of it
(due to the floor-plan of the house or the shading effect of its
structure), to guarantee the safe wireless connection, place
a COMPUTHERM Q2RF wireless repeater between the two
parts.
7.4 Manual control of the receiver unit
Pressing the "MANUAL" button separates the thermostat
from the receiver unit. In this case, the boiler or air
conditioner connected to the receiver unit can only be turned
on and off manually, without any temperature inspection. The
continuously illuminated green LED indicates "MANUAL"
mode. Pressing the "M/A" button turns on or off the boiler.
(The red LED is illuminated when the boiler is turned on). By
pressing the "MANUAL" button again, the device quits manual
control and resumes automatic (thermostat-controlled)
operation (the green LED goes out).
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