Danfoss Heating
15
If the thermostat CET2000B-RF and receiver RX1-S have been 
supplied together in a combined pack, the units have been 
paired in the factory and no commissioning is required.  If the 
thermostat and receiver have been supplied separately follow 
the steps below to pair the devices.
Step 1  RX1-S - Ensure RX1-S is wired in accordance with 
instructions on page 8.
Step 2  CET2000B-RF - Insert 2xAA alkaline batteries.  If the 
CET2000B-RF is not already paired to the RX1-S it will enter it’s 
learning mode shown by the ashing aerial icon.
Step 3 RX1-S - Press and hold down both the PROG and CH 
buttons.  The PROG LED will light for 1 second when it has 
paired with the CET2000B-RF.  Release buttons
A steady aerial icon on CET2000B-RF conrms that the devices 
are now paired and ready for control of your domestic hot water 
system.
Commissioning