Please note: We have improved the test/ pairing on the RT310RF & RT510RF thermostats on models produced after 1018 (October 2018). You can check the date by looking for a small sticker with 4 digits on the back of the thermostat.

Please follow the new procedure below:

The RT310RF & RT510RF are factory pre-paired as standard. When you power up the receiver, the RED LED will flash.

To test that the receiver and thermostat are paired, navigate to the Pairing Menu by choosing Menu > Pairing > TEST. This will display ‘TESTING 10’ on the thermostat. If the receiver and thermostat are paired correctly, the RED and GREEN LED’s on the receiver will flash. To exit test mode, press and hold the Menu button for 3 seconds.

If the RED and GREEN LED’s on the receiver are NOT flashing, you will need to Re-Pair the Thermostat and Receiver. To do this, slide the ON/OFF switch on the receiver to OFF and then slide it back to ON. The RED LED will now flash. Now, enter the pairing process by choosing Menu > Pairing > PAIR. You will now see ‘PAIRING 10’ on the screen. When the RED LED’s stops flashing, the Thermostat and Receiver are paired.

You can test this again by following the above process.

What is the difference between the RT310RF and the RT510RF?

The RT310RF is non programmable, the RT510RF is programmable.

What is the hand button for on the RT510/RT510RF?

If you press the hand button once you can turn off the programmable function, making it a non-programmable thermostat

How to re-pair RT310RF/RT310i/RT510RF?

Step 1

Make sure your receiver in on the Auto setting


Step 2 

Turn your receiver OFF for 3 seconds, and then turn it back on – you will get a flashing Red light


Step 3 

On the thermostat, using a pin or a paperclip, hold the test/pair button in for 5 seconds – you will see SY10 on the screen


Step 4 

Check your receiver – the red flashing light should now be a solid red light


That thermostat and the receiver are now paired.

What does auto and manual mean on the receiver?

Auto = works from the Thermostat.

Manual = manual is the override.

How do I wire the receiver to my boiler for 230 volts?

You have live, neutral, com and no on the receiver. The ‘live’ and ‘neutral’ go out as normal. The ‘com’ links to live. The ‘no’ goes to the RT in the boiler.

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If you can’t solve your technical problem based on the information on this page, please contact out technical team, who will be more than happy to help.

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