Help changing thermostat

[Maria Shaw]

Hi please can you help me. My boilers thermostat wireless controller led has become unreadable so I brought a salus rt500rf to replace my honeywall BDR91. However I am lost which wires go where.
Do I need one wire as shown in the picture.
Thanks in advance

 

[streamer]

Hi Maria.
First of all are you confident you are able to safely isolate the supply?
It's quite difficult to make out the wiring diagrams from the photos but I would suggest the following.
Remove the link between L and Lin.
Connect brown to L and blue to N on the bottom of the new stat. Connect grey to Lin and black to SL(on).

 

[streamer]

@Maria Shaw Have you tried it?