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Troubleshooting

Low batteries

If you see this battery icon then you need to 
replace the batteries right away. See overleaf.

No power to the thermostat

If the thermostat screen is blank after initial installation, 
then check the protective tab has been removed from 
the batteries. Otherwise, try replacing the batteries.

RF communication error

If these icons are flashing, then there may be an 
issue with the signal from the Boiler Relay. First 
check there is mains power to the Boiler Relay. If this 
does not resolve the problem, consult your installer. 

Defective thermostat

If this icon is displayed then the thermostat is no 
longer functioning and will need to be replaced.

4.  After binding, the strength of the 

signal between the devices will 
appear on the thermostat for a 
few seconds. 1 equals the lowest 
strength and 5 the highest.  
 
Then the normal screen will be 
shown, including a   symbol 
to confirm the Gateway and the 
thermostat are now connected.

5.  Please refer to your Gateway 

instructions to learn how to 
create your online account and 
download our smartphone app.

2.  Briefly touch the right-hand touch 

zone once again to send the binding 
signal. The 

 and   symbols will 

flash until binding is successful.

3.  With good reception, the 

green   LED on the Gateway 
will then light up to confirm 
successful binding.

Binding your thermostat to a 
RFG100 Internet Gateway

If you want to be able to operate your Single Zone 
Thermostat remotely or add scheduling then you will 
need to use the Honeywell RFG100 Internet Gateway 
(sold separately) and bind the thermostat to it.
To do this, please follow the full installation instructions 
in the RFG100 box, and at the relevant binding stage 
follow these steps to connect your thermostat:

1.  Touch and hold the right-hand 

touch zone for about 10 seconds 
to activate the binding screen. 

10s

Manufactured for and on behalf of the Environmental and 
Combustion Controls Division of Honeywell Technologies 
Sàrl, ACS-ECC EMEA, Z.A. La Pièce 16, 1180 Rolle, 
Switzerland by its Authorised Representative Honeywell Inc.
Need help? For assistance with this product please visit:

www.honeywelluk.com

Honeywell Control Systems Ltd.

Skimped Hill Lane,
Bracknell
Berkshire
RG12 1EB
www.honeywelluk.com

50094158-006 A 

Note:

 if you have tried to bind but have 

persistent problems doing so, please 
visit the URL below for assistance:

www.honeywelluk.com/support/sztbinding

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